Food Engineering
Spray drying
Atomising a liquid feed into a hot air stream so droplets dry almost instantly into powder.
Real-life application
How milk powder, instant coffee and infant formula are made — liquid sprayed into hot air, drying to powder almost instantly.
Related terms
Freeze drying
Processing & PreservationDehydration by freezing the food and subliming the ice under vacuum below the triple point of water, followed by desorption of bound water.
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.
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