R22와 R407C를 적용한 스크류 냉동기의 부분부하와 이코노마이저 성능 실험
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Screw compressor type chiller is widely used in refrigeration for capacity over 30 RT. In general, the chiller is operated under part load. Therefore, the characteristics of part load should be estimated for predicting the chiller performance. The adoption of an economizer system increases the cooling capacity and improves COP. In this study, we have conducted a performance test of part load and economizer system using R22 and R407C for various secondary fluid temperatures.