Ecological Modelling Laboratory
Virtual Greenhouse model
Virtual Greenhouse model
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The description of the Virtual Greenhouse model is currently available only as a PDF file.
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Instructions...
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| state | double | - | ← setpoints/chalk[value] |
| swReflectivity | double | 0.0 | Short-wave reflectivity potentially added to cover [0;1] |
| lwReflectivity | double | 0.0 | Long-wave reflectivity potentially added to cover [0;1] |
| Outputs | |||
| swReflectivityValue | double | 0.0 | Short-wave reflectivity actually added to cover [0;1] |
| lwReflectivityValue | double | 0.0 | Long-wave reflectivity actually added to cover [0;1] |
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| isOn | bool | FALSE | Is light currently switched on? |
| power | double | 0.0 W/m2 | Power of installed lamps per greenhouse area |
| ballast | double | 0.0 W/m2 | Power used by lamp ballast |
| parPhotonCoef | double | 1.6 micromole PAR/J | Number of PAR photons per spent lamp energy |
| efficiency | double | 1.0 | Proportion of intensity actually emitted [0;1] |
| propSw | double | 0.5 | Proportion of power emitted as short-wave radiation [0;1] |
| propLw | double | 0.1 | Proportion of power emitted as long-wave radiation [0;1] |
| propConv | double | 0.4 | Proportion of power emitted as convective heat [0;1] |
| propBallastLw | double | 0.7 | Proportion of ballast emitted as long-wave radiation [0;1] |
| propBallastConv | double | 0.3 | Proportion of ballast emitted as convective heat [0;1] |
| Outputs | |||
| parEmissionBottom | double | 0.0 micromole PAR/m2/s | PAR emission downwards |
| swEmissionBottom | double | 0.0 W/m2 | Short-wave emission downwards |
| lwEmissionBottom | double | 0.0 W/m2 | Long-wave emission downwards |
| lwEmissionTop | double | 0.0 W/m2 | Long-wave emission upwards |
| convectionBottom | double | 0.0 W/m2 | Convective heat downwards |
| convectionTop | double | 0.0 W/m2 | Convective heat upwards |
| powerUsage | double | 0.0 W/m2 | Current power usage |
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| state | double | - | ← setpoints/chalk[value] |
| swReflectivity | double | 0.0 | Short-wave reflectivity potentially added to cover [0;1] |
| lwReflectivity | double | 0.0 | Long-wave reflectivity potentially added to cover [0;1] |
| Outputs | |||
| swReflectivityValue | double | 0.0 | Short-wave reflectivity actually added to cover [0;1] |
| lwReflectivityValue | double | 0.0 | Long-wave reflectivity actually added to cover [0;1] |
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| isOn | bool | FALSE | Is light currently switched on? |
| power | double | 0.0 W/m2 | Power of installed lamps per greenhouse area |
| ballast | double | 0.0 W/m2 | Power used by lamp ballast |
| parPhotonCoef | double | 1.6 micromole PAR/J | Number of PAR photons per spent lamp energy |
| efficiency | double | 1.0 | Proportion of intensity actually emitted [0;1] |
| propSw | double | 0.5 | Proportion of power emitted as short-wave radiation [0;1] |
| propLw | double | 0.1 | Proportion of power emitted as long-wave radiation [0;1] |
| propConv | double | 0.4 | Proportion of power emitted as convective heat [0;1] |
| propBallastLw | double | 0.7 | Proportion of ballast emitted as long-wave radiation [0;1] |
| propBallastConv | double | 0.3 | Proportion of ballast emitted as convective heat [0;1] |
| Outputs | |||
| parEmissionBottom | double | 0.0 micromole PAR/m2/s | PAR emission downwards |
| swEmissionBottom | double | 0.0 W/m2 | Short-wave emission downwards |
| lwEmissionBottom | double | 0.0 W/m2 | Long-wave emission downwards |
| lwEmissionTop | double | 0.0 W/m2 | Long-wave emission upwards |
| convectionBottom | double | 0.0 W/m2 | Convective heat downwards |
| convectionTop | double | 0.0 W/m2 | Convective heat upwards |
| powerUsage | double | 0.0 W/m2 | Current power usage |
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| volume | double | 15.0 m3 | Pipe volume |
| flowRate | double | 20.0 m3/h | Water flow rate |
| k | double | 0.0063 | Calibration parameter |
| b | double | 1.25 | Calibration parameter(!=1) |
| propLw | double | 0.5 | Proportion of energy emitted as long-wave radiation [0;1] |
| minTemperature | double | 20.0 oC | Minimum inflow temperature |
| maxTemperature | double | 80.0 oC | Maximum inflow temperature |
| desiredTemperature | double | 0.0 oC | Desired inflow temperature |
| indoorsTemperature | double | - oC | ← indoors[temperature] |
| groundArea | double | - m2 | ← geometry[groundArea] |
| Outputs | |||
| inflowTemperature | double | 0.0 oC | Water temperature at entry |
| outflowTemperature | double | 0.0 oC | Water temperature at exit |
| transitTime | double | 0.0 min | Average transit time of water |
| temperatureDrop | double | 0.0 oC | Drop in water temperature from entry to exit |
| energyFlux | double | 0.0 W/m2 | Energy flux |
| lwEmissionTop | double | 0.0 W/m2 | Long-wave emission upwards |
| lwEmissionBottom | double | 0.0 W/m2 | Long-wave emission downwards |
| convectionTop | double | 0.0 W/m2 | Convective heat flux upwards |
| convectionBottom | double | 0.0 W/m2 | Convective heat flux downwards |
| isHeating | bool | FALSE | Is heat pipe inflow above minimum temperature? |
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| groundArea | double | - | ← construction/geometry[groundArea] |
| indoorsTemperature | double | - | ← indoors[temperature] |
| indoorsRh | double | - | ← indoors/humidity[rh] |
| state | double | - | ← setpoints/elementary/heatPumpsOn[value] (Running state relative to full effect) |
| number | int | 1 0,1,2,... | Number of heat pumps |
| maxCoolingPower | double | 78.4 kW | Maximum cooling power |
| coolingEfficiency | double | 0.69 | Effective proportion of cooling power [0;1] |
| maxFlowRate | double | 2.5 m3/s | Maximum air flow rate |
| maxPowerUserParasitic | double | 2.2 kW | Maximum basic power use |
| coolingTemperature | double | 10.0 oC | Temperature of the cooling aggregate |
| Outputs | |||
| condensationRate | double | 0.0 kg/m2/s | Rate of water condensed in the unit |
| powerUseCooling | double | 0.0 kW/m2 | Power used for cooling |
| powerUserParasitic | double | 0.0 kW/m2 | Power lost |
| powerUse | double | 0.0 kW/m2 | Power used (total) |
| heat | double | 0.0 kW/m2 | Heat generated |
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| None | |||
| Outputs | |||
| None | |||
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| lagPeriod | double | 5.0 min | Time to draw the screen completely |
| desiredState | double | 0.0 | State desired by screen controller [0;1] |
| timeStepSecs | double | - | ← calendar[timeStepSecs] |
| Outputs | |||
| state | double | 0.0 | Proportion of the screen drawn [0;1] |
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| desiredValue | double | 0.0 /h | Desired ventilation rate |
| ventAreaRatio | double | 0.4 int | Total vent area in proportion to groundarea |
| windCoef | double | 50.0 /h/(m/s) | Proportionality of air flux with windspeed |
| temperatureCoef | double | 14.0 /h/K | Proportionality of air flux with temperature diffence |
| windSpeed | double | - | ← outdoors[windSpeed] |
| leakage | double | - | ← construction/leakage[value] |
| outdoorsTemperature | double | - | ← outdoors[temperature] |
| indoorsTemperature | double | - | ← indoors[temperature] |
| outdoorsRh | double | - | ← outdoors[rh] |
| indoorsRh | double | - | ← indoors[rh] |
| timeStep | double | - | ← calendar[timeStepSecs] |
| indoorsVolume | double | - | ← geometry[volume] |
| Outputs | |||
| value | double | 0.0 /h | Ventilation air flux, including leakage |
| minValue | double | 0.0 /h | Minimum possible air flux, including leakage |
| maxValue | double | 0.0 /h | Maximum possible air flux, including leakage |
| relative | double | 0.0 | Ventilation relative to maximum possible [0;1] |
| sensibleHeatFlux | double | 0.0 W/m2 | Sensible heat flux |
| latentHeatFlux | double | 0.0 W/m2 | Latent heat flux |
| isVentilating | bool | FALSE | Are vents more open than crack? |
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| coverPerGroundArea | double | - | ← geometry[coverPerGroundArea] |
| swAbsorptivityTops | vec_double | - | ← ./materials/*[swAbsorptivityTopAdj] (Vector of materials' adjusted values) |
| swAbsorptivityBottoms | vec_double | - | ← ./materials/*[swAbsorptivityBottomAdj] (Vector of materials' adjusted values) |
| swReflectivityTops | vec_double | - | ← ./materials/*[swReflectivityTopAdj] (Vector of materials' adjusted values) |
| swReflectivityBottoms | vec_double | - | ← ./materials/*[swReflectivityBottomAdj] (Vector of materials' adjusted values) |
| swTransmissivityTops | vec_double | - | ← ./materials/*[swTransmissivityTopAdj] (Vector of materials' adjusted values) |
| swTransmissivityBottoms | vec_double | - | ← ./materials/*[swTransmissivityBottomAdj] (Vector of materials' adjusted values) |
| lwAbsorptivityTops | vec_double | - | ← ./materials/*[lwAbsorptivityTopAdj] (Vector of materials' adjusted values) |
| lwAbsorptivityBottoms | vec_double | - | ← ./materials/*[lwAbsorptivityBottomAdj] (Vector of materials' adjusted values) |
| lwReflectivityTops | vec_double | - | ← ./materials/*[lwReflectivityTopAdj] (Vector of materials' adjusted values) |
| lwReflectivityBottoms | vec_double | - | ← ./materials/*[lwReflectivityBottomAdj] (Vector of materials' adjusted values) |
| lwTransmissivityTops | vec_double | - | ← ./materials/*[lwTransmissivityTopAdj] (Vector of materials' adjusted values) |
| lwTransmissivityBottoms | vec_double | - | ← ./materials/*[lwTransmissivityBottomAdj] (Vector of materials' adjusted values) |
| Utops | vec_double | - | ← ./materials/*[UtopAdj] (Vector of materials' adjusted values) |
| Ubottoms | vec_double | - | ← ./materials/*[UbottomAdj] (Vector of materials' adjusted values) |
| heatCapacitys | vec_double | - | ← ./materials/*[heatCapacityAdj] (Vector of materials' adjusted values) |
| groundArea | double | - | ← geometry[groundArea] |
| Outputs | |||
| swAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| UtopAdj | double | 0.0 | Parameter adjusted for chalk and state |
| UbottomAdj | double | 0.0 | Parameter adjusted for chalk and state |
| heatCapacityAdj | double | 0.0 | Parameter adjusted for chalk and state |
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| swAbsorptivityTop | double | 0.0 | Short-wave absorptivity at the top [0;1] |
| swReflectivityTop | double | 0.0 | Short-wave reflectivity at the top [0;1] |
| swTransmissivityTop | double | 1.0 | Short-wave transmissivity at the top [0;1] |
| swAbsorptivityBottom | double | 0.0 | Short-wave absorptivity at the bottom [0;1] |
| swReflectivityBottom | double | 0.0 | Short-wave reflectivity at the bottom [0;1] |
| swTransmissivityBottom | double | 1.0 | Short-wave transmissivity at the bottom [0;1] |
| lwAbsorptivityTop | double | 0.0 | Long-wave absorptivity at the top [0;1] |
| lwReflectivityTop | double | 0.0 | Long-wave reflectivity at the top [0;1] |
| lwTransmissivityTop | double | 1.0 | Long-wave transmissivity at the top [0;1] |
| lwAbsorptivityBottom | double | 0.0 | Long-wave absorptivity at the bottom [0;1] |
| lwReflectivityBottom | double | 0.0 | Long-wave reflectivity at the bottom [0;1] |
| lwTransmissivityBottom | double | 1.0 | Long-wave transmissivity at the bottom [0;1] |
| Utop | double | 0.0 W/K/m2 layer | Heat transfer coefficient at the top |
| Ubottom | double | 0.0 W/K/m2 layer | Heat transfer coefficient at the bottom |
| heatCapacity | double | 0.0 J/K/m2 layer | Area-specific heat capacity |
| coverPerGroundArea | double | - | ← geometry[coverPerGroundArea] |
| myAreas | vec_double | c() | |
| myWeights | vec_double | c() | |
| allAreas | vec_double | - | ← shelter/faces/*[area] |
| allWeights | vec_double | - | ← shelter/faces/*[weight] |
| Outputs | |||
| swAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| UtopAdj | double | 0.0 | Parameter adjusted for chalk and state |
| UbottomAdj | double | 0.0 | Parameter adjusted for chalk and state |
| heatCapacityAdj | double | 0.0 | Parameter adjusted for chalk and state |
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| coverPerGroundArea | double | - | ← geometry[coverPerGroundArea] |
| swAbsorptivityTops | vec_double | - | ← ./materials/*[swAbsorptivityTopAdj] (Vector of materials' adjusted values) |
| swAbsorptivityBottoms | vec_double | - | ← ./materials/*[swAbsorptivityBottomAdj] (Vector of materials' adjusted values) |
| swReflectivityTops | vec_double | - | ← ./materials/*[swReflectivityTopAdj] (Vector of materials' adjusted values) |
| swReflectivityBottoms | vec_double | - | ← ./materials/*[swReflectivityBottomAdj] (Vector of materials' adjusted values) |
| swTransmissivityTops | vec_double | - | ← ./materials/*[swTransmissivityTopAdj] (Vector of materials' adjusted values) |
| swTransmissivityBottoms | vec_double | - | ← ./materials/*[swTransmissivityBottomAdj] (Vector of materials' adjusted values) |
| lwAbsorptivityTops | vec_double | - | ← ./materials/*[lwAbsorptivityTopAdj] (Vector of materials' adjusted values) |
| lwAbsorptivityBottoms | vec_double | - | ← ./materials/*[lwAbsorptivityBottomAdj] (Vector of materials' adjusted values) |
| lwReflectivityTops | vec_double | - | ← ./materials/*[lwReflectivityTopAdj] (Vector of materials' adjusted values) |
| lwReflectivityBottoms | vec_double | - | ← ./materials/*[lwReflectivityBottomAdj] (Vector of materials' adjusted values) |
| lwTransmissivityTops | vec_double | - | ← ./materials/*[lwTransmissivityTopAdj] (Vector of materials' adjusted values) |
| lwTransmissivityBottoms | vec_double | - | ← ./materials/*[lwTransmissivityBottomAdj] (Vector of materials' adjusted values) |
| Utops | vec_double | - | ← ./materials/*[UtopAdj] (Vector of materials' adjusted values) |
| Ubottoms | vec_double | - | ← ./materials/*[UbottomAdj] (Vector of materials' adjusted values) |
| heatCapacitys | vec_double | - | ← ./materials/*[heatCapacityAdj] (Vector of materials' adjusted values) |
| effectiveArea | double | 0.0 m2 | Total area of screens drawn |
| Outputs | |||
| swAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| UtopAdj | double | 0.0 | Parameter adjusted for chalk and state |
| UbottomAdj | double | 0.0 | Parameter adjusted for chalk and state |
| heatCapacityAdj | double | 0.0 | Parameter adjusted for chalk and state |
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| radPrecision | double | 0.1 W/m2|mumol/m2/s | Precision of numerical solution to radiation budget |
| tempPrecision | double | 0.5 K | Max. allowed temperature change in a sub-step among layers |
| thresholdPrecision | double | 0.1 K | Precision of temperature thresholds for climate control |
| timeStep | double | - | ← calendar[timeStepSecs] |
| averageHeight | double | - | ← geometry[averageHeight] |
| coverPerGroundArea | double | - | ← geometry[coverPerGroundArea] |
| outdoorsTemperature | double | - | ← outdoors[temperature] |
| outdoorsRh | double | - | ← outdoors[rh] |
| outdoorsCo2 | double | - | ← outdoors[co2] |
| transpirationRate | double | - | ← plant[transpiration] |
| Pn | double | - | ← plant[Pn] |
| co2Injection | double | - | ← actuators/co2[value] |
| heatPipeFlux | double | - | ← actuators/heatPipes[heatFlux] |
| ventilationThreshold | double | - | ← controllers/ventilation/temperatureThreshold[value] |
| ventilationCostThreshold | double | - | ← controllers/ventilation/maxHeatingCost[value] |
| heatingThreshold | double | - | ← controllers/heating[value] |
| heatPipesOn | vec_bool | - | ← heatPipes/*[isHeating] |
| ventilationOn | bool | - | ← actuators/ventilation[isVentilating] |
| deltaVentControl | double | 0.3 /h/min | Control increment of ventilation flux |
| deltaVentControlRelative | double | 0.2 /min | Relative control of ventilation flux |
| deltaHeatingControl | double | 4.0 K/min | Control increment in heating temperature |
| babyTimeStep | double | 1.0 s | Length of first time step after climate control action |
| step | int | - | ← sim[step] |
| dateTime | datetime | - | ← calendar[dateTime] |
| Outputs | |||
| subSteps | int | 0 int | Number of sub-steps taken to resolve the whole budget |
| radIterations | int | 0 int | Number of iterations taken to resolve radiation budget |
| maxDeltaT | double | 0.0 K | Max. temperature change in a sub-step |
| controlCode | int | 0 int | Code for the control option needed |
| actionCode | int | 0 int | Code for the control action taken |
| transpiration | double | 0.0 kg/m2 | Plant transpiration |
| condensation | double | 0.0 kg/m2 | Condensation on cover |
| ventedWater | double | 0.0 kg/m2 | Water loss by ventilation |
| latentHeatBalance | double | 0.0 W/m2 | Latent heat of water balance |
| ventilationHeatLoss | double | 0.0 W/m2 | Sensible heat lost by ventilation |
| indoorsSensibleHeatFlux | double | 0.0 W/m2 | Rate of change in indoors air sensible heat |
| indoorsLatentHeatFlux | double | 0.0 W/m2 | Rate of change in indoors air latent heat |
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| initTemperature | double | 20.0 oC | Initial temperature |
| Outputs | |||
| temperature | double | 0.0 | |
| swEmissionTop | double | 0.0 | |
| swEmissionBottom | double | 0.0 | |
| swFlowTop | double | 0.0 | |
| swFlowBottom | double | 0.0 | |
| swAbsorbedTop | double | 0.0 | |
| swAbsorbedBottom | double | 0.0 | |
| lwEmissionTop | double | 0.0 | |
| lwEmissionBottom | double | 0.0 | |
| lwFlowTop | double | 0.0 | |
| lwFlowBottom | double | 0.0 | |
| lwAbsorbedTop | double | 0.0 | |
| lwAbsorbedBottom | double | 0.0 | |
| parEmissionTop | double | 0.0 | |
| parEmissionBottom | double | 0.0 | |
| parFlowTop | double | 0.0 | |
| parFlowBottom | double | 0.0 | |
| parAbsorbedTop | double | 0.0 | |
| parAbsorbedBottom | double | 0.0 | |
| convectionTop | double | 0.0 | |
| convectionBottom | double | 0.0 | |
| radiationDeltaT | double | 0.0 oC | Change in temperature due to net radiation |
| convectionDeltaT | double | 0.0 oC | Change in temperature due to net convection/conduction |
| totalDeltaT | double | 0.0 oC | Total change in temperature |
| condensation | double | 0.0 kg/m2 | Condensation (top+bottom) |
| netRadiation | double | 0.0 W/m2 | Net radiation (absorption - emission |
| netConvection | double | 0.0 W/m2 | Net radiation (absorption - emission |
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| initTemperature | double | 20.0 oC | Initial temperature |
| coverPerGroundArea | double | - | ← geometry[coverPerGroundArea] |
| indoorsRh | double | - | ← indoors[rh] |
| Outputs | |||
| temperature | double | 0.0 | |
| swEmissionTop | double | 0.0 | |
| swEmissionBottom | double | 0.0 | |
| swFlowTop | double | 0.0 | |
| swFlowBottom | double | 0.0 | |
| swAbsorbedTop | double | 0.0 | |
| swAbsorbedBottom | double | 0.0 | |
| lwEmissionTop | double | 0.0 | |
| lwEmissionBottom | double | 0.0 | |
| lwFlowTop | double | 0.0 | |
| lwFlowBottom | double | 0.0 | |
| lwAbsorbedTop | double | 0.0 | |
| lwAbsorbedBottom | double | 0.0 | |
| parEmissionTop | double | 0.0 | |
| parEmissionBottom | double | 0.0 | |
| parFlowTop | double | 0.0 | |
| parFlowBottom | double | 0.0 | |
| parAbsorbedTop | double | 0.0 | |
| parAbsorbedBottom | double | 0.0 | |
| convectionTop | double | 0.0 | |
| convectionBottom | double | 0.0 | |
| radiationDeltaT | double | 0.0 oC | Change in temperature due to net radiation |
| convectionDeltaT | double | 0.0 oC | Change in temperature due to net convection/conduction |
| totalDeltaT | double | 0.0 oC | Total change in temperature |
| condensation | double | 0.0 kg/m2 | Condensation (top+bottom) |
| netRadiation | double | 0.0 W/m2 | Net radiation (absorption - emission |
| netConvection | double | 0.0 W/m2 | Net radiation (absorption - emission |
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| initTemperature | double | 20.0 oC | Initial temperature |
| indoorsRh | double | - | ← indoors[rh] |
| Outputs | |||
| temperature | double | 0.0 | |
| swEmissionTop | double | 0.0 | |
| swEmissionBottom | double | 0.0 | |
| swFlowTop | double | 0.0 | |
| swFlowBottom | double | 0.0 | |
| swAbsorbedTop | double | 0.0 | |
| swAbsorbedBottom | double | 0.0 | |
| lwEmissionTop | double | 0.0 | |
| lwEmissionBottom | double | 0.0 | |
| lwFlowTop | double | 0.0 | |
| lwFlowBottom | double | 0.0 | |
| lwAbsorbedTop | double | 0.0 | |
| lwAbsorbedBottom | double | 0.0 | |
| parEmissionTop | double | 0.0 | |
| parEmissionBottom | double | 0.0 | |
| parFlowTop | double | 0.0 | |
| parFlowBottom | double | 0.0 | |
| parAbsorbedTop | double | 0.0 | |
| parAbsorbedBottom | double | 0.0 | |
| convectionTop | double | 0.0 | |
| convectionBottom | double | 0.0 | |
| radiationDeltaT | double | 0.0 oC | Change in temperature due to net radiation |
| convectionDeltaT | double | 0.0 oC | Change in temperature due to net convection/conduction |
| totalDeltaT | double | 0.0 oC | Total change in temperature |
| condensation | double | 0.0 kg/m2 | Condensation (top+bottom) |
| netRadiation | double | 0.0 W/m2 | Net radiation (absorption - emission |
| netConvection | double | 0.0 W/m2 | Net radiation (absorption - emission |
xxx
xxx
| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| initTemperature | double | 20.0 oC | Initial temperature |
| groundArea | double | - | ← geometry[groundArea] |
| indoorsRh | double | - | ← indoors[rh] |
| Outputs | |||
| temperature | double | 0.0 | |
| swEmissionTop | double | 0.0 | |
| swEmissionBottom | double | 0.0 | |
| swFlowTop | double | 0.0 | |
| swFlowBottom | double | 0.0 | |
| swAbsorbedTop | double | 0.0 | |
| swAbsorbedBottom | double | 0.0 | |
| lwEmissionTop | double | 0.0 | |
| lwEmissionBottom | double | 0.0 | |
| lwFlowTop | double | 0.0 | |
| lwFlowBottom | double | 0.0 | |
| lwAbsorbedTop | double | 0.0 | |
| lwAbsorbedBottom | double | 0.0 | |
| parEmissionTop | double | 0.0 | |
| parEmissionBottom | double | 0.0 | |
| parFlowTop | double | 0.0 | |
| parFlowBottom | double | 0.0 | |
| parAbsorbedTop | double | 0.0 | |
| parAbsorbedBottom | double | 0.0 | |
| convectionTop | double | 0.0 | |
| convectionBottom | double | 0.0 | |
| radiationDeltaT | double | 0.0 oC | Change in temperature due to net radiation |
| convectionDeltaT | double | 0.0 oC | Change in temperature due to net convection/conduction |
| totalDeltaT | double | 0.0 oC | Total change in temperature |
| condensation | double | 0.0 kg/m2 | Condensation (top+bottom) |
| netRadiation | double | 0.0 W/m2 | Net radiation (absorption - emission |
| netConvection | double | 0.0 W/m2 | Net radiation (absorption - emission |
xxx
xxx
| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| initTemperature | double | 20.0 oC | Initial temperature |
| Outputs | |||
| temperature | double | 0.0 | |
| swEmissionTop | double | 0.0 | |
| swEmissionBottom | double | 0.0 | |
| swFlowTop | double | 0.0 | |
| swFlowBottom | double | 0.0 | |
| swAbsorbedTop | double | 0.0 | |
| swAbsorbedBottom | double | 0.0 | |
| lwEmissionTop | double | 0.0 | |
| lwEmissionBottom | double | 0.0 | |
| lwFlowTop | double | 0.0 | |
| lwFlowBottom | double | 0.0 | |
| lwAbsorbedTop | double | 0.0 | |
| lwAbsorbedBottom | double | 0.0 | |
| parEmissionTop | double | 0.0 | |
| parEmissionBottom | double | 0.0 | |
| parFlowTop | double | 0.0 | |
| parFlowBottom | double | 0.0 | |
| parAbsorbedTop | double | 0.0 | |
| parAbsorbedBottom | double | 0.0 | |
| convectionTop | double | 0.0 | |
| convectionBottom | double | 0.0 | |
| radiationDeltaT | double | 0.0 oC | Change in temperature due to net radiation |
| convectionDeltaT | double | 0.0 oC | Change in temperature due to net convection/conduction |
| totalDeltaT | double | 0.0 oC | Total change in temperature |
| condensation | double | 0.0 kg/m2 | Condensation (top+bottom) |
| netRadiation | double | 0.0 W/m2 | Net radiation (absorption - emission |
| netConvection | double | 0.0 W/m2 | Net radiation (absorption - emission |
xxx
xxx
| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| initTemperature | double | 20.0 oC | Initial temperature |
| initRh | double | 70.0 % | Initial relative humidity |
| initCo2 | double | 400.0 ppm | Initial CO2 concentration |
| Outputs | |||
| temperature | double | 0.0 oC | Temperature |
| rh | double | 0.0 % | Relative humidity |
| co2 | double | 0.0 ppm | CO2 concentration |
| heatInflux | double | 0.0 W/m2 | Total convective/conductive heat influx |
xxx
xxx
| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| lai | double | - | ← /crop[lai] |
| leafAn | vec_double | - | ← ./*/leafPhotosynthesis[An] |
| leafAg | vec_double | - | ← ./*/leafPhotosynthesis[Ag] |
| growthRespiration | double | 0.3 | Relative growth respiration [0;1] |
| trackPn | bool | - | ← ..[trackPn] |
| Outputs | |||
| An | double | 0.0 | |
| Ag | double | 0.0 | |
| Ar | double | 0.0 | |
| Pn | double | 0.0 g dry mass/ground m2/h | Net canopy growth rate |
| Pg | double | 0.0 g dry mass/ground m2/h | Gross canopy growth rate |
| Pr | double | 0.0 g dry mass/ground m2/h | Canopy respiration rate |
| trackedPn | vec_double | c() | Pn values if 'trackPn' is true |
xxx
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| swAbsorptivityTop | double | 0.0 | Short-wave absorptivity at the top [0;1] |
| swReflectivityTop | double | 0.0 | Short-wave reflectivity at the top [0;1] |
| swTransmissivityTop | double | 1.0 | Short-wave transmissivity at the top [0;1] |
| swAbsorptivityBottom | double | 0.0 | Short-wave absorptivity at the bottom [0;1] |
| swReflectivityBottom | double | 0.0 | Short-wave reflectivity at the bottom [0;1] |
| swTransmissivityBottom | double | 1.0 | Short-wave transmissivity at the bottom [0;1] |
| lwAbsorptivityTop | double | 0.0 | Long-wave absorptivity at the top [0;1] |
| lwReflectivityTop | double | 0.0 | Long-wave reflectivity at the top [0;1] |
| lwTransmissivityTop | double | 1.0 | Long-wave transmissivity at the top [0;1] |
| lwAbsorptivityBottom | double | 0.0 | Long-wave absorptivity at the bottom [0;1] |
| lwReflectivityBottom | double | 0.0 | Long-wave reflectivity at the bottom [0;1] |
| lwTransmissivityBottom | double | 1.0 | Long-wave transmissivity at the bottom [0;1] |
| Utop | double | 0.0 W/K/m2 layer | Heat transfer coefficient at the top |
| Ubottom | double | 0.0 W/K/m2 layer | Heat transfer coefficient at the bottom |
| heatCapacity | double | 0.0 J/K/m2 layer | Area-specific heat capacity |
| coverPerGroundArea | double | - | ← geometry[coverPerGroundArea] |
| transmissivityReduction | double | 0.0 | Reduced cover transmission due to beams, dirt, etc. [0;1] |
| swShading | double | 0.0 | Additional short-wave reflectivity caused by chalk [0;1] |
| lwShading | double | 0.0 | Additional long-wave reflectivity caused by chalk [0;1] |
| Outputs | |||
| swAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| UtopAdj | double | 0.0 | Parameter adjusted for chalk and state |
| UbottomAdj | double | 0.0 | Parameter adjusted for chalk and state |
| heatCapacityAdj | double | 0.0 | Parameter adjusted for chalk and state |
xxx
xxx
| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| lai | double | 3.0 m2/m2 | Leaf area index |
| coverage | double | 1.0 | Proportion of floor area with crop [0;1] |
| k | double | 0.7 | Light extinction coefficient [0;1] |
| gammaStar | double | 48.95 ppm | CO2 compensation point |
| Jmax | double | 115.67 | |
| lightRespiration | double | 0.29 | |
| ballBerryIntercept | double | 0.106 | Minimum stomatal conductance for CO2 (g0) |
| ballBerrySlope | double | 1.64 | Slope og stomatal conductance for CO2 (g1) |
| Vcmax | double | 98.0 | Not used |
| alpha | double | 0.84 | Not used |
| trackPn | bool | FALSE | Track Pn values? |
| Outputs | |||
| None | |||
xxx
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| cover | string | "glass" | A material listed in shelter/covers |
| screens | string | "" | Zero or more screen materials listed in shelter/screens |
| area | double | 0.0 m2 | Area of face |
| weight | double | 1.0 | Weight given to face in radiation budget [0;1] |
| Outputs | |||
| screenMaterials | vec_string | c() | Vector of screen material names |
xxx
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| swAbsorptivityTop | double | 0.0 | Short-wave absorptivity at the top [0;1] |
| swReflectivityTop | double | 0.0 | Short-wave reflectivity at the top [0;1] |
| swTransmissivityTop | double | 1.0 | Short-wave transmissivity at the top [0;1] |
| swAbsorptivityBottom | double | 0.0 | Short-wave absorptivity at the bottom [0;1] |
| swReflectivityBottom | double | 0.0 | Short-wave reflectivity at the bottom [0;1] |
| swTransmissivityBottom | double | 1.0 | Short-wave transmissivity at the bottom [0;1] |
| lwAbsorptivityTop | double | 0.0 | Long-wave absorptivity at the top [0;1] |
| lwReflectivityTop | double | 0.0 | Long-wave reflectivity at the top [0;1] |
| lwTransmissivityTop | double | 1.0 | Long-wave transmissivity at the top [0;1] |
| lwAbsorptivityBottom | double | 0.0 | Long-wave absorptivity at the bottom [0;1] |
| lwReflectivityBottom | double | 0.0 | Long-wave reflectivity at the bottom [0;1] |
| lwTransmissivityBottom | double | 1.0 | Long-wave transmissivity at the bottom [0;1] |
| Utop | double | 0.0 W/K/m2 layer | Heat transfer coefficient at the top |
| Ubottom | double | 0.0 W/K/m2 layer | Heat transfer coefficient at the bottom |
| heatCapacity | double | 0.0 J/K/m2 layer | Area-specific heat capacity |
| coverPerGroundArea | double | - | ← geometry[coverPerGroundArea] |
| Outputs | |||
| swAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| UtopAdj | double | 0.0 | Parameter adjusted for chalk and state |
| UbottomAdj | double | 0.0 | Parameter adjusted for chalk and state |
| heatCapacityAdj | double | 0.0 | Parameter adjusted for chalk and state |
xxx
xxx
| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| numSpans | int | 1 | Number of spans |
| spanWidth | double | 40.0 m | Width of a span |
| length | double | 100.0 m | Length of side wall |
| height | double | 2.5 m | Wall height |
| roofPitch | double | 26.0 | Pitch (slope) of roof [0;180] |
| Outputs | |||
| sideArea | double | 0.0 m2 | Total area of side walls |
| endArea | double | 0.0 m2 | Total area of end face |
| roofArea | double | 0.0 m2 | Total area of greenhouse roof |
| coverArea | double | 0.0 m2 | Total area of greenhouse cover |
| groundArea | double | 0.0 m2 | Total area covered by greenhouse |
| volume | double | 0.0 m3 | Total greenhouse volume |
| coverPerGroundArea | double | 0.0 m2/m2 | Area to ground cover ratio |
| averageHeight | double | 0.0 m | Average height of total volume |
xxx
xxx
| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| mode | int | 0 0|1|10 | Control mode can be 0=off, 1=threshold-controlled, 10=on |
| input | double | 0.0 | Current value of threshold variable |
| thresholdLow | double | 0.0 W/m2 | If threshold-controlled the light is switched on below this threshold |
| thresholdHigh | double | 0.0 W/m2 | If threshold-controlled the light is switched off above this threshold |
| minPeriodOn | double | 0.0 min | Minimum period that light stays on |
| timeStepSecs | double | - | ← calendar[timeStepSecs] |
| Outputs | |||
| isOn | bool | FALSE | Is light on? |
| periodOn | double | 0.0 min | Time since last time light went on |
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| coverPerGroundArea | double | - | ← geometry[coverPerGroundArea] |
| parEmissionBottomLights | vec_double | - | ← ./*[parEmissionBottom] |
| swEmissionBottomLights | vec_double | - | ← ./*[swEmissionBottom] |
| lwEmissionBottomLights | vec_double | - | ← ./*[lwEmissionBottom] |
| lwEmissionTopLights | vec_double | - | ← ./*[lwEmissionTop] |
| convectionBottomLights | vec_double | - | ← ./*[convectionBottom] |
| convectionTopLights | vec_double | - | ← ./*[convectionTop] |
| powerUsageLights | vec_double | - | ← ./*[powerUsage] |
| Outputs | |||
| swAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| UtopAdj | double | 0.0 | Parameter adjusted for chalk and state |
| UbottomAdj | double | 0.0 | Parameter adjusted for chalk and state |
| heatCapacityAdj | double | 0.0 | Parameter adjusted for chalk and state |
| parEmissionBottom | double | 0.0 micromole PAR/m2/s | PAR emission downwards |
| swEmissionBottom | double | 0.0 W/m2 | Short-wave emission downwards |
| lwEmissionBottom | double | 0.0 W/m2 | Long-wave emission downwards |
| lwEmissionTop | double | 0.0 W/m2 | Long-wave emission upwards |
| convectionBottom | double | 0.0 W/m2 | Convective heat downwards |
| convectionTop | double | 0.0 W/m2 | Convective heat upwards |
| powerUsage | double | 0.0 W/m2 | Current power usage |
xxx
xxx
| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| coverPerGroundArea | double | - | ← geometry[coverPerGroundArea] |
| lwEmissionTopPipes | vec_double | - | ← ./*[lwEmissionTop] |
| lwEmissionBottomPipes | vec_double | - | ← ./*[lwEmissionBottom] |
| convectionTopPipes | vec_double | - | ← ./*[convectionTop] |
| convectionBottomPipes | vec_double | - | ← ./*[convectionBottom] |
| inflowTemperaturePipes | vec_double | - | ← ./*[inflowTemperature] |
| Outputs | |||
| swAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| UtopAdj | double | 0.0 | Parameter adjusted for chalk and state |
| UbottomAdj | double | 0.0 | Parameter adjusted for chalk and state |
| heatCapacityAdj | double | 0.0 | Parameter adjusted for chalk and state |
| lwEmissionTop | double | 0.0 W/m2 | Long-wave emission upwards |
| lwEmissionBottom | double | 0.0 W/m2 | Long-wave emission downwards |
| convectionTop | double | 0.0 W/m2 | Convective heat flux upwards |
| convectionBottom | double | 0.0 W/m2 | Convective heat flux downwards |
| heatFlux | double | 0.0 W/m2 | Total heat flux from pipes |
| inflowTemperatureAvg | double | 0.0 oC | Average of inflow temperatures |
xxx
xxx
| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| rh | double | 0.0 | Indoors relative humidity [0;100] |
| temperature | double | - oC | ← indoors/temperature[value] |
| Outputs | |||
| ah | double | 0.0 kg/m3 | Indoors absolute humidity |
xxx
xxx
| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| swAbsorptivityTop | double | 0.0 | Short-wave absorptivity at the top [0;1] |
| swReflectivityTop | double | 0.0 | Short-wave reflectivity at the top [0;1] |
| swTransmissivityTop | double | 1.0 | Short-wave transmissivity at the top [0;1] |
| swAbsorptivityBottom | double | 0.0 | Short-wave absorptivity at the bottom [0;1] |
| swReflectivityBottom | double | 0.0 | Short-wave reflectivity at the bottom [0;1] |
| swTransmissivityBottom | double | 1.0 | Short-wave transmissivity at the bottom [0;1] |
| lwAbsorptivityTop | double | 0.0 | Long-wave absorptivity at the top [0;1] |
| lwReflectivityTop | double | 0.0 | Long-wave reflectivity at the top [0;1] |
| lwTransmissivityTop | double | 1.0 | Long-wave transmissivity at the top [0;1] |
| lwAbsorptivityBottom | double | 0.0 | Long-wave absorptivity at the bottom [0;1] |
| lwReflectivityBottom | double | 0.0 | Long-wave reflectivity at the bottom [0;1] |
| lwTransmissivityBottom | double | 1.0 | Long-wave transmissivity at the bottom [0;1] |
| Utop | double | 0.0 W/K/m2 layer | Heat transfer coefficient at the top |
| Ubottom | double | 0.0 W/K/m2 layer | Heat transfer coefficient at the bottom |
| heatCapacity | double | 0.0 J/K/m2 layer | Area-specific heat capacity |
| Outputs | |||
| None | |||
xxx
xxx
| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| coverPerGroundArea | double | - | ← geometry[coverPerGroundArea] |
| Outputs | |||
| swAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| UtopAdj | double | 0.0 | Parameter adjusted for chalk and state |
| UbottomAdj | double | 0.0 | Parameter adjusted for chalk and state |
| heatCapacityAdj | double | 0.0 | Parameter adjusted for chalk and state |
xxx
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| leakage | double | 1.0 /h | Infiltration rate at a wind speed of 4 m/s |
| windSpeed | double | - | ← outdoors[windSpeed] |
| Outputs | |||
| value | double | 0.0 /h | Air flux by leakage |
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| co2 | double | 400.0 ppm | Outdoors CO2 concentration |
| temperature | double | - oC | ← ./records[Tair] (Outdoors ambient temperature) |
| rh | double | - | ← ./records[Rhair] (Outdoors ambient relative humidity) |
| radiation | double | - W/m2 | ← ./records[GlobRad] (Total sunlight irradiation) |
| propPar | double | 0.45 | Proportion of PAR in radiation [0;1] |
| propUv | double | 0.07 | Proportion of UV in radiation [0;1] |
| windSpeed | double | - m/s | ← ./records[Windspeed] (Outdoors wind speed) |
| Outputs | |||
| par | double | 0.0 mymol PAR/m2/s | Sunlight PAR |
| soilTemperature | double | - oC | ← ./soilTemperature[value] |
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| sensedValue | double | 0.0 | The sensed value |
| desiredValue | double | 0.0 | The desired value (setpoint) |
| Kprop | double | 0.1 | The proportional gain |
| Kint | double | 0.0 /min | The integral gain |
| Kderiv | double | 0.0 min | The derivative gain |
| lookAhead | double | 0.0 min | Computed error from predicted sensed value this time ahead |
| minimum | double | -1.79769e+308 | Minimum allowed value of control variable |
| maximum | double | 1.79769e+308 | Maximum allowed value of control variable |
| timeStep | double | - s | ← calendar[timeStepSecs] |
| Outputs | |||
| controlVariable | double | 0.0 | The control variable; tends to zero when all three error terms summed tend to zero |
| error | double | 0.0 | The error |
| integral | double | 0.0 min | The integral error |
| derivative | double | 0.0 /min | The derivative of the approach of sensed towards target value |
xxx
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| coverPerGroundArea | double | - | ← geometry[coverPerGroundArea] |
| k_sw | double | 0.7 | Short-wave extinction coefficient [0;1] |
| k_lw | double | 1.0 | Long-wave extinction coefficient [0;1] |
| sigma | double | 0.2 | Scattering coefficient |
| g0 | double | 0.1 m/s | Ball-Berry model of stomatal resistance (H2O): intercept |
| g1 | double | 1.64 m3/mol | Ball-Berry model of stomatal resistance (H2O): slope |
| re | double | 200.0 m/s | Boundary layer resistance (H2O) |
| lai | double | 1.0 m2/m2 | Leaf area index in the cultivated area |
| coverage | double | 0.9 m2/m2 | Proportion of floor covered by plants |
| Jmax | double | 194.0 | |
| Vcmax | double | 112.0 | |
| GammaStar | double | 41.0 ppm | CO2 compensation point |
| Km | double | 600.0 Pa | Michaelis-Menten coefficient for Farquhar model |
| Rd0 | double | 0.49 | |
| alpha | double | 0.24 | Slope of light response curve |
| theta | double | 0.85 | Shape of light response curve |
| EaVJ | double | 29680.0 | Temperature response of Jmax |
| EdVJ | double | 200000.0 | Temperature response of Jmax |
| delsJ | double | 631.88 | Temperature response of Jmax |
| EaVC | double | 58550.0 | Temperature response of Vcmax |
| EdVC | double | 200000.0 | Temperature response of Vcmax |
| delsC | double | 629.26 | Temperature response of Vcmax |
| Q10 | double | 1.92 | Temperature response of respiration |
| indoorsTemperature | double | - | ← indoors[temperature] |
| indoorsRh | double | - | ← indoors[rh] |
| indoorsCo2 | double | - | ← indoors[co2] |
| timeStep | double | - | ← calendar[timeStepSecs] |
| Outputs | |||
| swAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| UtopAdj | double | 0.0 | Parameter adjusted for chalk and state |
| UbottomAdj | double | 0.0 | Parameter adjusted for chalk and state |
| heatCapacityAdj | double | 0.0 | Parameter adjusted for chalk and state |
| temperature | double | 0.0 oC | Leaf temperature |
| transpiration | double | 0.0 kg/m2 ground/s | Transpiration rate |
| incidentPar | double | 0.0 mymol PAR/m2 ground/s | PAR hitting the canopy |
| Pn | double | 0.0 | |
| Pg | double | 0.0 | |
| Rd | double | 0.0 | |
| growthRate | double | 0.0 g carbohydrate/m2 ground | Carbohydrate biomass produced in this time step |
| leafAm | double | 0.0 | |
| leafAc | double | 0.0 | |
| leafAj | double | 0.0 | |
| leafRd | double | 0.0 | |
| leafGrowthRate | double | 0.0 g carbohydrate/m2 leaf | Carbohydrate biomass produced in this time step |
| lue | double | 0.0 g carbohydrate/micromole PAR absorbed | Light use efficiency |
xxx
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| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| swAbsorptivityTop | double | 0.0 | Short-wave absorptivity at the top [0;1] |
| swReflectivityTop | double | 0.0 | Short-wave reflectivity at the top [0;1] |
| swTransmissivityTop | double | 1.0 | Short-wave transmissivity at the top [0;1] |
| swAbsorptivityBottom | double | 0.0 | Short-wave absorptivity at the bottom [0;1] |
| swReflectivityBottom | double | 0.0 | Short-wave reflectivity at the bottom [0;1] |
| swTransmissivityBottom | double | 1.0 | Short-wave transmissivity at the bottom [0;1] |
| lwAbsorptivityTop | double | 0.0 | Long-wave absorptivity at the top [0;1] |
| lwReflectivityTop | double | 0.0 | Long-wave reflectivity at the top [0;1] |
| lwTransmissivityTop | double | 1.0 | Long-wave transmissivity at the top [0;1] |
| lwAbsorptivityBottom | double | 0.0 | Long-wave absorptivity at the bottom [0;1] |
| lwReflectivityBottom | double | 0.0 | Long-wave reflectivity at the bottom [0;1] |
| lwTransmissivityBottom | double | 1.0 | Long-wave transmissivity at the bottom [0;1] |
| Utop | double | 0.0 W/K/m2 layer | Heat transfer coefficient at the top |
| Ubottom | double | 0.0 W/K/m2 layer | Heat transfer coefficient at the bottom |
| heatCapacity | double | 0.0 J/K/m2 layer | Area-specific heat capacity |
| coverPerGroundArea | double | - | ← geometry[coverPerGroundArea] |
| state | double | 0.0 | Proportion drawn (0=fully withdrawn; 1=fully drawn [0;1] |
| Uinsulation | double | 1e+16 W/K/m2 layer | Insulation effect on cover |
| UinsulationEffectivity | double | 1.0 | Effectivity of Uinsulation [0;1] |
| Outputs | |||
| swAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| UtopAdj | double | 0.0 | Parameter adjusted for chalk and state |
| UbottomAdj | double | 0.0 | Parameter adjusted for chalk and state |
| heatCapacityAdj | double | 0.0 | Parameter adjusted for chalk and state |
| UinsulationAdj | double | 0.0 W/K/m2 layer | Insulation effect on cover adjusted for state and perfection |
xxx
xxx
| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| indoorsTemperatureIn | double | -999.0 | |
| indoorsRhIn | double | -999.0 | |
| indoorsCo2In | double | -999.0 | |
| indoorsWindspeedIn | double | -999.0 | |
| outdoorsTemperatureIn | double | -999.0 | |
| outdoorsRhIn | double | -999.0 | |
| outdoorsCo2In | double | -999.0 | |
| outdoorsGlobalRadiationIn | double | -999.0 | |
| outdoorsWindSpeedIn | double | -999.0 | |
| soilTemperatureIn | double | -999.0 | |
| sinb | double | - | ← sun[sinb] |
| Outputs | |||
| indoorsTemperature | double | 0.0 | |
| indoorsRh | double | 0.0 | |
| indoorsAh | double | 0.0 | |
| indoorsCo2 | double | 0.0 | |
| indoorsWindspeed | double | 0.0 | |
| outdoorsTemperature | double | 0.0 | |
| outdoorsRh | double | 0.0 | |
| outdoorsCo2 | double | 0.0 | |
| outdoorsGlobalRadiation | double | 0.0 | |
| outdoorsWindSpeed | double | 0.0 | |
| soilTemperature | double | 0.0 |
xxx
xxx
| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| swReflectivities | vec_double | - | ← ./*[swReflectivity] |
| lwReflectivities | vec_double | - | ← ./*[lwReflectivity] |
| states | vec_double | - | ← ./*[state] |
| Outputs | |||
| swReflectivity | double | 0.0 | Short-wave reflectivity added to cover [0;1] |
| lwReflectivity | double | 0.0 | Long-wave reflectivity added to cover [0;1] |
xxx
xxx
| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| swReflectivity | double | 0.0 | Short-wave reflectivity potentially added to cover [0;1] |
| lwReflectivity | double | 0.0 | Long-wave reflectivity potentially added to cover [0;1] |
| state | double | 0.0 | State of shading agent [0;1] |
| Outputs | |||
| None | |||
xxx
xxx
| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| None | |||
| Outputs | |||
| None | |||
xxx
xxx
| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| None | |||
| Outputs | |||
| None | |||
xxx
xxx
| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| coverPerGroundArea | double | - | ← geometry[coverPerGroundArea] |
| intercept | double | 0.732 | Emissivity intercept on dew point temperature [0;1] |
| slope | double | 0.00635 /K | Emissivity slope on dew point temperature |
| airTemperature | double | - oC | ← outdoors[temperature] |
| rh | double | - | ← outdoors[rh] |
| Tsky | double | - oC | ← if exists(outdoors[Tsky]) then outdoors[Tsky] else - 273.0 (Sky temperature taken from records otherwise computed) |
| Outputs | |||
| swAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| swTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityTopAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwAbsorptivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwReflectivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| lwTransmissivityBottomAdj | double | 0.0 | Parameter adjusted for chalk and state [0;1] |
| UtopAdj | double | 0.0 | Parameter adjusted for chalk and state |
| UbottomAdj | double | 0.0 | Parameter adjusted for chalk and state |
| heatCapacityAdj | double | 0.0 | Parameter adjusted for chalk and state |
| temperature | double | 0.0 oC | Sky temperature |
xxx
xxx
| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| initial | double | 5.0 oC | Initial soil temperature |
| min | double | 2.0 oC | Minimum soil temperature |
| max | double | 40.0 oC | Maximum soil temperature |
| outdoorsTemperature | double | - | ← outdoors[temperature] |
| atMidnight | bool | - | ← calendar[atMidnight] |
| Outputs | |||
| value | double | 0.0 oC | Soil temperature |
xxx
xxx
| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| heatPipesHeatFlux | double | - W/m2 | ← actuators/heatPipes[heatFlux] |
| lampsPowerUsage | double | - W/m2 | ← actuators/growthLights[powerUsage] |
| co2Injection | double | - g/m2/h | ← actuators/co2[value] |
| transpirationFinite | double | - | ← budget[transpiration] |
| condensationFinite | double | - | ← budget[condensation] |
| ventedWaterFinite | double | - | ← budget[ventedWater] |
| screenState1 | double | - | ← actuators/screens/layer1[state] |
| screenState2 | double | - | ← actuators/screens/layer2[state] |
| screenState3 | double | - | ← actuators/screens/layer3[state] |
| isSkipping | bool | - | ← output/*[isSkipping] |
| lightState1 | double | - | ← actuators/growthLights/bank1[isOn] |
| lightState2 | double | - | ← actuators/growthLights/bank2[isOn] |
| lightState3 | double | - | ← actuators/growthLights/bank3[isOn] |
| Outputs | |||
| heatingCost | double | 0.0 MWh/m2/y | |
| lampCost | double | 0.0 MWh/m2/y | |
| co2Cost | double | 0.0 kg CO2/m2/y | |
| transpiration | double | 0.0 kg/m2/y | |
| condensation | double | 0.0 kg/m2/y | |
| ventedWater | double | 0.0 kg/m2/y | |
| screen1 | double | 0.0 | Proportion of time screen layer 1 was drawn [0;1] |
| screen2 | double | 0.0 | Proportion of time screen layer 2 was drawn [0;1] |
| screen3 | double | 0.0 | Proportion of time screen layer 3 was drawn [0;1] |
| light1 | double | 0.0 | Proportion of time growth lights bank 1 was on [0;1] |
| light2 | double | 0.0 | Proportion of time growth lights bank 2 was on [0;1] |
| light3 | double | 0.0 | Proportion of time growth lights bank 3 was on [0;1] |
xxx
xxx
| Inputs | Type | Default | Purpose / Expression |
|---|---|---|---|
| windSpeed | double | - m/s | ← outdoors[windSpeed] |
| UwindMinimum | double | 2.8 W/m2/K | Heat transfer coefficient at no wind |
| UwindSlope | double | 1.2 W/m2/K/(m/s) | Heat transfer coefficient linear increase with wind speed |
| UwindExponent | double | 0.8 | Reduces effect of high windspeed |
| Outputs | |||
| value | double | 0.0 W/K/m2 layer | U-value |
Download the latest version with the newly published Cereal Aphid-Fungus model. Also includes the Virtual Greenhouse model.
5 Oct 2023
Read our paper on the Cereal Aphid-Fungus model and study the detailed documentation. Any questions? Write us.
2 Aug 2023
We remain candy-coloured until further notice.
1 Aug 2023
Any questions concerning our models and tools? Interested in visiting the lab? Want to chat online? Write us.