CFC화합물과 대체 냉매간의 성능비교에 관한 연구

A Study on the Performance Comparison between CFC Compound and Alternative Refrigerants

The purpose of this project is to find the best alternative refrigerants by analyzing the temperature and pressure distributions of 4 kinds of refrigerants in Copper tube. Four refrigerants are commonly used CFC-12 and three alternatives which are HCFC-22, HFC-134a and HFC-152a. The pressure and temperature variations along flow direction in tube are numerically analyzed by a commercial thermalfluid code, PHOENICS. The results say that HFC-134a has the smallest pressure drop along flow direction among four refrigerents and that CFC-12 shows the largest temperature decrease as it flows in tube but HFC-134a also has very same trend of temperature variation with CFC-12 and so HFC-134a is the best alternative, while considering the variations of pressure and temperature.