냉매의 오염에 의한 냉동시스템의 성능 변화에 대한 연구

Abstract

Production and consumption of CFC, HCFC and HFC refrigerants, which have been found to destroy ozone layer and promote global warming, are regulated. In addition, used refrigerant must be properly recovered, but recovery rate is at a very low level. Refrigerant is contaminated by various contaminants during use, and causes deterioration in device performance such as increased energy consumption. Contaminated refrigerant after use must be properly recovered and regenerated, and through this process, it is expected to have a positive effect on air pollution caused by additional use and emission of the refrigerants. Therefore, in this study, the change in device performance due to refrigerant contamination was confirmed in the refrigerant contamination experiment, and performance of the recycled refrigerant was confirmed in the recycled refrigerant experiment, and finally, the feasibility of using recyled refrigerant was determined through comparison with the new refrigerant. The study was conducted with the goal of verifying. In the refrigerant contamination test, the contaminants were non-condensable gas, moisture, and oil, and after recording the standard performance data, the contaminant was injected and the data was recorded to confirm the change. First, in the non-condensable gas experiment, the discharge pressure and temperature of the compressor increased, the compressor work increased, and the COP decreased. Next, there was no significant change in the moisture test, but it is thought that the results will vary depending on the presence or absence of the receiver. In the oil test, the cooling capacity decreased, the compressor work decreased, and the COP increased, but the results are expected to vary depending on the configuration and structure of the device. Finally, in the recycled refrigerant experiment, the recycled refrigerant did not show a significant difference in performance from the new refrigerant. Most of the contaminants seem to have been removed during regeneration, and it is thought that the increase in the recovery rate of refrigerant and the increase in the rate of recovery and reuse will have a positive effect on air pollution.