modelMV_CanopyTranspiration

Vapour mass flow released by the canopy due to transpiration processes. The model must be connected like the following: canopy (filled port) - air (unfilled port)
Diagram of MV_CanopyTranspirationOpen the diagram
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Extends from Greenhouses.Interfaces.Vapour.Element1D (Partial water mass transfer element with two WaterMassPort connectors that does not store energy).

Parameters

TypeNameDefaultDescription
Modelica.Units.SI.AreaAfloor surface

Connectors

TypeNameDefaultDescription
Greenhouses.Interfaces.Vapour.WaterMassPort_aport_a (from Element1D)
Greenhouses.Interfaces.Vapour.WaterMassPort_bport_b (from Element1D)

Components

TypeNameDefaultDescription
Modelica.Units.SI.MassFlowRateMV_flow (from Element1D)Mass flow rate from port_a -> port_b
Modelica.Units.SI.PressureDifferencedP (from Element1D)port_a.VP - port_b.VP
RealCO2_ppm350CO2 concentration in ppm of internal air
RealLAI1Leaf Area Index
Modelica.Units.SI.HeatFluxR_can100Global irradiation above the canopy
Modelica.Units.SI.TemperatureT_can300Temperature of the canopy (port a)
RealE_kgsm2Canopy transpiration
RealE_Wm2Canopy transpiration
Modelica.Units.SI.PressureCoefficientgamma65.8psychometric constant
Realr_sstomatal resistance of the leaves
Realr_bVboundary layer resistance to heat mass of the leaves
Modelica.Units.SI.Densityrho1.23of the air
Modelica.Units.SI.SpecificHeatCapacityC_p1005of the air
RealLe0.89Lewis number for vapour
Realr_minminimum possible canopy resistance
Realr_Ishort-wave radiation resistance
Realr_Ttemperature resistance
Realr_CO2CO2 resistance
Realr_VPvapour pressure deficit resistance
Modelica.Units.SI.PressureVP_canvapour pressure of the canopy
Modelica.Units.SI.PressureVP_airvapour pressure of interior air
RealC_1
RealC_2
RealC_3
RealC_4
RealC_5
Modelica.Units.SI.TemperatureT_mtemperature at which the resistance on the leave is minimal
RealVEC_canAirMass transfer coefficient
RealS_rs
Modelica.Units.SI.SpecificEnergyDELTAH2.45e6latent heat of water vaporization
Realr_s2