스크롤압축기를 적용한 CFC - 대체냉매용 냉동시스템에 관한 연구
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A performance analysis of refrigeration system using the HFC-134a and scroll compressor is performed numerically. In search for alternatives to CFCs, HFC-I34a have been chosen as the preferred replacement for CFC-12. The refrigeration system mainly consists of various standard components such as heat exchanger, compressor, expansion device. The model for heat exchanger performance is based on a tube-by-tube method which is analyzed separately by considering the cross-flow heat transfer with the outdoor air flow and the pressure drop. Compressor is adopted the scroll-type which have many merits such as high efficiency, low noise and vibration, and small. Short-tube is included as a expansion device. Vapour and liquid line are also considered for the performance analysis of refrigeration system. Using the modeling of various components of refrigeration system, performance comparison of CFC-12 and HFC-134a is performed numerically for the various outdoor air temperature