Experimental Research of Grape Drying Using Solar Dryer with Latent Heat Storage System

摘要

Solar dryer with latent heat storage system was designed in order to solve the problems of continuity of solar drying. The system was used to dry grape. The results of experiment show that the dryer met the requirement of continuous drying. At solar radiation of 600Wm-2-900Wm-2 and ambient temperature range of 35-42¡æ, the solar collector instantaneous thermal efficiency is 56%, the minimum heating efficiency of collector is 70%, the average heat storage efficiency is 66%. The average consuming time of drying 1kg grape from 87.9% (wb) to 14%(wb) was 6 days.