냉매과냉각이 냉동시스템 성능에 미치는 영향에 대한 실험적 연구

An experimental study was performed to investigate characteristics of the refrigerant sub-cooling system with a variation of sub-cooled degree. The refrigerant sub cooled system was made up general vapor-compression refrigeration cycle added sub-cooler and ice storage tank. This system used cold heat that was made & stored in IST during night time for the refrigerant sub-cooled as heat sources at day time. The purpose of this experimental study are to understand of sub-cooling system performance according to sub-cooled degree and to take data. The experimental result showed that mass flow rate was more increased than general operation and cooling capacity, COP also were increased owing to the sub-cooled degree of refrigerant. In other words, this system was superior to the general refrigeration system.