Comparative analysis on defrosting methods of air cooler in cold storage
The operation principles of the defrosting methods of air cooler in cold stor-age are introduced,including hot gas defrosting,water defrosting and electric defrost-ing.Under the same operation condition,the comparative analysis is made from initial in-vestment cost,operation cost,defrosting effect etc.The results show that the initial in-vestment of air cooler with electric defrosting is the lowest,which is 60%of that of hot gas defrosting,and 80%of that of water defrosting;the operation cost of air cooler with hot gas defrosting is about 40%-50%of that of electric defrosting,and 1.2-1.4 times of that of water defrosting;the defrosting effect of air cooler with water defrosting is the best.Finally,the defrosting methods of air cooler for different types of cold storage are suggested.
cold storageair coolerhot gas defrostingwater defrostingelectric de-frosting