Exergy analyses of heat pump drying system

Abstract

The technology of drying is centuries-old. It is apparent that drying itself is an energy-intensive process. Heat pump assisted-drying provides a controllable drying environment (temperature and humidity) for better products' quality at low energy consumption. On the exergy analyses of heat pump unit, exergy losses of heat pump four main components (evaporator, compressor, condenser and expansion valve) were studied. The exergy method provides the useful information to choose the appropriate component design and operation procedure.