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第 42 卷第 9 期西安交通大学学报 Vol. 42 №9
2008 年 9 月 J OU RNAL OF XI′AN J IAO TON G UN IV ERSIT Y Sep . 2008
2流2 路布置对热泵空调中冷凝和蒸发
两用换热器性能的影响
黄东, 李权旭, 吴蓓, 袁秀玲
(西安交通大学能源与动力工程学院, 710049 , 西安)
摘要: 研究了顺交叉、逆交叉和 NU 型三种流路布置对 R22 热泵空调中冷凝和蒸发两用换热器性
能的影响规律. 结果表明:作为蒸发器时,NU 型的换热量最大,比逆交叉和顺交叉的换热量分别增
加了 1 5 %和 3 25 % ;作为冷凝器时,顺交叉的换热量最大,分别比逆交叉和 NU 型的换热量增加
了 7 4 %和 1 28 % ;依据蒸发器和冷凝器的换热量之和比较,NU 型的最大,顺交叉的次之,逆交叉
的最小. 因此,NU 型是使制冷循环和制热循环效率较高的流路布置.
关键词: 流路布置;蒸发器;冷凝器;热泵
中图分类号: TB65 文献标志码: A 文章编号: 0253 987X(2008) 09 1107 06
Effect of Refrigerant Circuitry on Indoor Coil Serving as
Condenser and Evaporator in Heat Pump
HUAN G Dong , L I Quanxu , WU Bei , YUAN Xiuling
(School of Energy and Power Engineering , Xi′an Jiaotong University , Xi′an 710049 , China)
Abstract : The effect s of t hree refrigerant circuitries on t he indoor coil in a split type air source
heat pump using R22 were investigated numerically by EVA P COND 2 0. The result s show t hat
bot h t he air and refrigerant temperat ure difference and overall heat transfer coefficient change
wit h t he space location. Moreover , t he evaporator capacity wit h NU shape arrangement is 1 5 %
and 3 25 % more t han t hat wit h counter and parallel arrangement s , respectively. Furt hermore ,
t he condenser capacity wit h parallel arrangement is 7 4