Heat pump assisted drying provides a controllable drying environment (temperature and humidity) for better product quality at low energy consumption. It has remarkable future prospects and revolutionary abilities. The heat pump system consists of an expansion valve, two heat exchangers (evaporator and condenser), and a compressor, which are connected using copper tubes.
Drying is an indispensable process in many food industries. The primary objective of drying is to remove moisture from the food so that bacteria, yeast and mold cannot grow and spoil the food. The economic consideration, environmental concerns and product quality aspects are the main three fold goals of drying process research in the food industry. The big market for dehydrated fruits and vegetables increases the importance of drying for most of the countries worldwide.