USAGE OF HEAT PUMP DRYER IN FOOD DRYING PROCESS AND APPLE DRYING APPLICATION

In turkey, drying is achieved natural method by spreading out the material on the ground. in this way, there are many disadvantages like low quality and hygienic problems. the resulting loss of food quality in the dried products may have effect negatively trade potential and economical worth. for preventing the deterioration of the materials different types of drying methods have been developed. low energy consumption applications are important for drying industry besides high product quality. for this purpose, heat pump dryer is gaining importance day by day in drying applications. in this study, the working principle of the heat pump dryer, heat pump types in the drying process and the heat pump dryer performance criteria will be considered. an example of application will be described using obtained results from apple drying operation that is conducted in the heat pump dryer.