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            暖通空調雜志社>期刊目次>2021年>第3期

            間接蒸發冷卻技術對熱回收式熱泵性能影響研究

            Influence of indirect evaporative cooling technology on performance of heat recovery heat pumps

            張紅 石峰豪
            四川省建筑科學研究院有限公司

            摘要:

            雙熱回收式熱泵排風與新風之間的換熱會導致排風中可利用的高品位能量減少、排風溫度偏高,從而惡化冷凝器的工作環境。間接蒸發冷卻熱回收技術在夏季既可以降低新風溫度,還可以保證排風溫度不至于過高。實驗研究了間接蒸發冷卻技術在夏季標準工況和變工況下對熱回收式熱泵的性能影響。結果表明:在標準工況下,熱泵機組的性能系數由1.98提升到2.57,能效提升達29.80%,系統的性能系數由2.17提升到3.61,能效提升達66.36%;在變工況下,平均系統性能系數提升達56%。

            關鍵詞:間接蒸發冷卻,熱回收式熱泵,換熱,排風溫度,性能系數

            Abstract:

            The heat exchange between the exhaust air and the outdoor air of the dual heat recovery heat pump will reduce the available high-grade energy in the exhaust air and increase the exhaust air temperature, thereby deteriorating the working environment of the condenser. Indirect evaporative cooling heat recovery technology can not only reduce the outdoor air temperature in summer, but also ensure that the exhaust air temperature is not too high. Experimentally studies the effect of indirect evaporative cooling technology on the performance of heat recovery heat pumps under standard and variable operating conditions in summer. The results show that under the standard operating condition, the coefficient of performance of the heat pump unit is increased from 1.98 to 2.57, and the energy efficiency is increased by 29.80%, and the system coefficient of performance is increased from 2.17 to 3.61, and the energy efficiency is increased by 66.36%. Under variable operating conditions, the average coefficient of performance of the system is increased by 56%.

            Keywords:indirectevaporativecooling,heatrecoveryheatpump,heatexchange,exhaustairtemperature,coefficientofperformance

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