蒸发冷却＋空气源热泵复合冷（热）水机组夏季能耗分析

蒸发冷却＋空气源热泵复合冷（热）水机组由蒸发冷却段和机械制冷段组成，蒸发冷却段是蒸发冷却式冷水机组，机械制冷段是直接蒸发冷却器（DEC）与空气源热泵冷（热）水机组的联用。本文首先对DEC＋空气源热泵冷（热）水机组的夏季能耗进行分析，并与传统的单独运行空气源热泵冷（热）水机组的情况进行对比；另外从压一焓图和温一熵图角度分析空气源热泵冷（热）水机组联用DEC后能效比提高的机制；然后以西安地区为例对蒸发冷却＋空气源热泵复合冷（热）水机组进行夏季能耗分析，推导出单独利用蒸发冷却技术就能制取18℃左右高温冷水的气候条件。为蒸发冷却制取冷水技术在中等湿度地区甚至高湿度地区的应用提供理论依据。

Analysis on energy consumption of the compound chiller （hot） water unit of evaporative cooling ＆ air source heat pump in summer

The compound chiller （hot） water unit of evaporative cooling ＆ air source heat pump is composed of evaporative cooling section and mechanical refrigeration section, the former is evaporative water chiller, the latter is direct evaporative cooler （DEC） and air source heat pump chiller （hot） water unit. Analyzes energy consumption of air source heat pump chiller （hot） water unit with DEC in summer, and makes the contrast with the traditional air source heat pump chiller （hot） water unit; Based on the pressure-enthalpy diagram and the temperature-entropy diagram, analyzes energy efficiency ratio＇ s increase of air source heat pump chiller （hot） water unit with DEC; and then analyzes energy con- sumption of evaporative cooling combined with air source heat pump chiller （hot） water unit in summer in Xi＇an area. And infers the climatic conditions that can make the high temperature cold water of 18 ℃ by using of the evaporative cooling technology. Provides the theory basis for the evaporative cooling technology in the middle-humidity area even the high-moisture area＇s application.