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Absolute Humidity (AH) is the actual water vapor content of greenhouse air expressed per unit mass of dry air or volume, used to manage moisture balance and condensation risk.
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Energy screens are materials or assemblies installed within a greenhouse to modulate infrared radiation, daylight, and air movement, reducing heat loss and controlling humidity.
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Humidity Deficit (HD) is the difference between the maximum possible absolute humidity at the current temperature and the actual absolute humidity, indicating the air's capacity to absorb moisture.
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Relative Humidity (RH) is the percent ratio of actual water vapor in greenhouse air to the maximum it can hold at the current air temperature.
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Vapor pressure deficit (VPD) is the difference between saturation vapor pressure and actual vapor pressure in greenhouse air, expressed in kPa, used to estimate transpiration potential and guide climate control.
