不同工质条件下污水源冷热水机组的性能分析

介绍污水源冷热水机组的工作原理及污水的特性，阐述了污水源冷热水机组在制冷和热泵工况下的各个设备的火用]损失、整个机组的的火用]效率以及一次能源利用率的计算公式。分析比较了不同工质条件下机组在夏季制冷和冬季制热工况时，整个机组的火用]效率、机组COP值、一次能源利用率等，得出R407C是污水源热泵的理想工质的结论。

Performance Analysis of a Wastewater Source Plant Serving as both a Water Chiller and a Heat Pump with Different Working Substance

The paper introduces in brief the working principle of a wastewater source plant serving as both a water chiller and a heat pump and the property of wastewater, and elaborates on the exergy efficiency of the plant and the exergy destroy of its main units as well as the calculating formula of its primary energy utilization rate in refrigeration and heat pump operating conditions, then makes an analysis and comparisons on the exergy efficiency, COP value and primary utilization rate of the plant with different temperature wastewater sources in summer refrigeration and winter heating,at last the paper concludes that R407C is the ideal working substance of wastewater source heating pumps.