ANALISIS BEBAN PENDINGINAN PADA RUANG PENYIMPANAN PRODUK PERTANIAN UNTUK SULAWESI UTARA DENGAN MENGGUNAKAN SISTEM REFRIGERASI BERTINGKAT

Abstract

This research aims to calculate the cooling load in cold storage of some agricultural products: potatoes, tomatoes, and peppers; to calculate the compressor’s power that is used on the cold storage with three types of multistage compression system: two compressors – three evaporators system (type 1), one compressor – three evaporators system (type 2), and two compressors – one evaporator system (type 3) for each agricultural products; and to analyze the calculated compressor’s power to determine the most efficient refrigeration system.

Based on the calculation’s results, it is found that the cooling load of potatoes is 295.438,28 Btu/hour, tomatoes 247.261,38 Btu/hour, peppers 300.281,36 Btu/hour, and the total cooling load of the three agricultural products is 841.981,02 Btu/hour. By using multistage compression system, it is obtained that the compressor’s power of type 1 is 106,15 hp, type 2 108,55 hp, and the type 3 212,03 hp that consists of type 3a is 75,55 hp, type 3b 59,44 hp, and type 3c 77,04 hp.

Keywords: cooling load, multistage compression system, compressor’s power