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本文通过新搭建的太阳能喷射式制冷循环试验台运行试验,对不同工况下制冷系统的性能进行了研究。实验过程中,采用电辅助加热即可实现对发生温度、蒸发温度、冷却水的温度和流量等参数的独立调节。实验研究结果表明,当发生温度小于80℃时,喷射系数ER、系统性能系数COP、机械COP等3个性能系数均随着发生温度的升高而变大;但当发生温度大于80℃时,这3个性能系数则随着温度的升高而减小;当蒸发温度小于23℃时,这3个性能系数随着蒸发温度的升高而变大,但当蒸发温度过高时,其增加趋势逐渐减小。
In this paper, the performance of the refrigeration system under different operating conditions is studied through the operation test of the newly built solar ejector refrigeration cycle test bench. During the experiment, using electric auxiliary heating can realize the independent adjustment of the parameters such as temperature, evaporation temperature, cooling water temperature and flow rate. Experimental results show that when the temperature is lower than 80 ℃, the three coefficient of performance such as injection coefficient ER, system coefficient of performance COP and mechanical COP all increase with the rise of temperature. However, when the temperature is higher than 80 ℃, The three performance coefficients decrease with increasing temperature. When the evaporation temperature is less than 23 ℃, the three performance coefficients increase with increasing evaporation temperature, but increase when the evaporation temperature is too high The trend is gradually decreasing.