Abstract

This paper using river water as cooling-water to theoretical calculation the refrigerating unit performance of screw chiller. To calculate the change of cooling water flow affected the coefficient of performance under a certain inlet temperature, and compare with other state of affairs. Through the analysis, it could found out that when the cooling-water temperature range between 24~28°C while the outlet temperature is 37°C, it can enhance the refrigerating unit coefficient of performance by reduce the cooling-water flow within limits.

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