本文叙述一台带有室外热交换器的变速CO2热泵热水器的实验室测定结果。测试包括在室外环境温度为－8.3℃至35℃下进行的标准24小时和第1小时的额定等级试验的热泵效率；室外机的噪声水平测定；和对输送水量测定以及室外机组在10℃环境条件下运行时的高效率淋浴水量测定。%This paper describes the results of a CO 2 Heat pump water heaters test with an outdoor heat exchang-er.The project conducted lab tests of a variable -speed, CO2 refrigerant HPWH with the heat exchanger located in the outdoor unit.The testing plan included observing heat pump efficiency at a range of outdoor ambient temperatures from -8.3℃to 35℃; conducting the standard 24-hour and 1-hour rating tests; measuring outdoor unit noise levels; and quantifying the number of efficient showers delivered with the outdoor unit operating at 10℃ ambient conditions.
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