Heat Pump Dryer Using Multifunctional Solar Thermal Collector

摘要

Heat pump is a system that absorbs heat from low temperature and releases it at higher temperature by using vapour compression system. The moisture in the air can be removed at low temperature during condensation in the evaporator. The heat releases in the condenser can be used for drying of high quality products. Both of these phenomena (reducing moisture content and heating the air) are very important in the drying process. This concept of removing and releasing heat in the heat pump system can be fully utilised for the drying of high quality product. This paper describes the preliminary results of the study on the solar assisted heat pump drying system at Universiti Kebangsaan Malaysia.