【作者】 王铁军； 金从卓； 陈志文； 孙英； 王正； 陶安发；

【Author】 Wang Zheng~(1)) Wang Tiejun~(1)) Jin Congzhuo~(2)) Chen Zhiwen~(2)) Sun Ying~(2)) TaoAnfa~(1)) 1)(School of mechanical and automotive engineering,Hefei University of Technology) 2)(Hefei Swan Refrigeration Technology Company)

【机构】 合肥工业大学机械与汽车工程学院； 合肥天鹅制冷科技有限公司；

【摘要】 针对高温和宽温带范围等特殊工作环境空气调节的需要,研发了HLD-45B高温空调。该空调使用R22/R142b混合制冷剂,采用常规空调制冷循环系统,冷凝器传热面积和风量的设计较常规空调增大15%～20%。进行了焓差法性能实验和宽温区运行实验,在较宽的环境温度变化范围内HLD-45B具有良好的工作性能:①标准空调工况至75℃高温工况,蒸发器送回风温度的差值变化平缓,制冷量的最大衰减小于15%,在宽温区空调系统运行稳定、可靠;②75℃高温工况的排气压力和排气温度分别为2.84 MPa和121℃,均在设定的安全范围。研究表明:中、高温混合制冷剂的合理使用可改善制冷系统的高温运行性能和可靠性,拓宽其运行温度范围。更多还原

【Abstract】 Aiming at meeting the requirements of air conditioning in wide temperature range and high temperature environment,develops HLD-45B high temperature air-conditioner.The air-conditioner uses R22/R142b as refrigerants and adopts common structure.Heat transfer area and air mass flow of condenser is 15%～20%larger than that of the normal air conditioner.Carries out both enthalpy and wide temperature range method experiments.The results show that the air-conditioner has good operating performance:①Temperature difference between inlet and outlet has small variation and refrigerating capacity decreases less than 15%from standard condition to 75℃high temperature condition.The air-conditioner operates stably and reliably.②discharge pressure and temperature,which are in designed safety range,are 2.84 MPa and 121℃respectively under 75℃high temperature condition.It can be concluded that:conservative use of mixture of high and intermediate temperature refrigerants can improve the performance and reliability of the high temperature air-conditioner and widen its operating temperature range.更多还原