Energy study of edamame freezing process at PT Mitratani Dua Tujuh Jember

Abstract

Abstract Knowledge of the cooling load of products that will be stored frozen in cold storage needs to be known. The purpose of this research was to analyse the cooling load in cold storage, calculate the freezing time of the product, calculate the amount of heat in the vapor compression cycle and the coefficient of performance (COP). PT. Mitratani Dua Tujuh is a company engaged in the processing of frozen fast food and edamame as one of the leading frozen products in this company. The maximum capacity of cold storage used was 190 tons with an air speed of 0.9 m/s and used two compressors with R-404A refrigerant type. The results of the analysis found that the freezing time per package on the product was 5.28 hours. Cold storage cooler load of 55, 432 kW or equivalent to 15.75 tons of refrigeration. The amount of heat in the compression cycle consisted of compression, condensation, expansion and evaporation were 6, 45 kW, 34, 17 kW, 17, 18 kW and 27, 72 kW, and the coefficient of performance (COP) was 1, 237.