Rancang Bangun Mesin Refrigerant Recovery untuk Meningkatkan Efisiensi R-22 pada Praktikum Sistem Refrigerasi

Abstract

Vocational Colege required a lot of practice. The practice of Refrigeration System, one of practice is charging refrigerant and vacuuming the refrigeration system. Because it was carried out by several groups, what happened was that the refrigerant that had been put into the system was wasted during the process of vacuuming the other groups. This causes an impact on the environment and the health and safety of the practitioner. The type of refrigerant used by the practitioner is the type of HCFC-22 or R-22, which has begun to be limited in use because it is less friendly to the environment and causes damage to the ozone layer on earth. One of the efforts to overcome the large amount of refrigerant that is released into the environment is to manufacture a refrigerant recovery device. This tool is used to take refrigerant from the system into the recovery tube prior to the practice of vacuuming, so as to minimize the wasting of refrigerant into the surrounding air. This study aims to determine how efficient the use of refrigerant is in the Refrigeration System practicum using a refrigerant recovery device. The method used is to compare the amount of refrigerant that enters and leaves during the vacuum process, with and without a refrigerant recovery device. From the results of the research, the efficiency values of refrigerant saving for practice using refrigerant recovery tools were 65.22%; 65.00%; 66.67%; 77.78% and 88.24%. So it can be concluded that the use of refrigerant recovery is able to save the use of refrigerant in the practice of the Refrigeration System.