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首页> 外文会议>International Institute of Refrigeration;IIR International congress of refrigeration;Ministry of Economy, Trade and Industry;Ministry of Agriculture, Forestry and Fisheries >A COMPARATIVE STUDY ON ROOM AIR CONDITIONER PERFORMANCE OF FINNED-TUBE EVAPORATOR AND THE MIRCOCHANNEL EVAPORATOR UNDER OPTIMAL THROTTLING CONDITION
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A COMPARATIVE STUDY ON ROOM AIR CONDITIONER PERFORMANCE OF FINNED-TUBE EVAPORATOR AND THE MIRCOCHANNEL EVAPORATOR UNDER OPTIMAL THROTTLING CONDITION

机译：最优节流条件下翅片管蒸发器与微通道蒸发器室内空调性能的比较研究

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摘要

Experimental investigations were conducted on refrigerant distributions in various throttling conditions in a5-HP split room air conditioner (RAC) equipped with micro-channels. Experiment results show a tendencyof abrupt decrease after a slight increase in both cooling capacity and EER when the width of expansionvalve opening gradually increases. The best performance was obtained when the inlet pressure of the microchannelevaporator is 993.6kPa, which was confirmed in the analysis of refrigerant distribution mechanismrevealed in the infrared thermographs. Comparisons are made between cooling capacity and EER of theRAC equipped with micro-channel evaporator working with the optimal throttling condition and those of atypical RAC equipped with a finned-tube evaporator with equal heat transfer area. The results reveal anaverage cooling capacity of the micro-channel evaporator RAC to be 4.8% higher than that of the finnedtubeevaporator RAC and an average EER over 5% higher.
机译：在配备微通道的5-HP分体式空调（RAC）中对各种节流条件下的制冷剂分布进行了实验研究。实验结果表明，当膨胀阀开口的宽度逐渐增大时，冷却能力和EER均略有增加，然后突然减小。当微通道蒸发器的入口压力为993.6kPa时，可获得最佳性能，这在红外热像仪揭示的制冷剂分配机理分析中得到了证实。比较了配备有最佳节流条件的微通道蒸发器的RAC的制冷量和EER，以及配备了具有相同传热面积的翅片管蒸发器的非典型RAC的制冷量和EER。结果显示，微通道蒸发器RAC的平均冷却能力比翅片管蒸发器RAC的平均冷却能力高4.8％，平均EER则高出5％。

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