🌱 Greenhouse Heat and Moisture Balance: Ventilation, Transpiration and VPD (2D)

Cross-section of a greenhouse in which sunlight and grow lights heat the air, the crop transpires and ventilation carries heat and moisture out. Set the weather outside, the solar radiation, the lamps, the ventilation rate, the leaf area and the cover, and see the steady inside temperature, relative humidity, dew point and vapour pressure deficit, with condensation on the roof when the air saturates. Energy and moisture balances, psychrometrics and the open-vent limit are checked numerically, with four in-page numerical checks.