Food Engineering
Psychrometric chart
A chart relating dry bulb temperature, wet bulb temperature, humidity ratio, relative humidity and enthalpy of moist air.
Real-life application
Used by engineers designing food dryers, cold stores and bakeries to control humidity and prevent condensation or over-drying.
Related terms
Wet bulb temperature
Food EngineeringThe temperature reached by a wetted surface in a moving air stream at steady state, where evaporative cooling balances heat gain from the air.
Relative humidity
Food EngineeringThe ratio of the partial pressure of water vapour in air to its saturation pressure at the same temperature, as a percentage.
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