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中文摘要：
带有气-液回热器的空调制冷系统已经被广泛使用,对相同几何尺寸的传统管壳式汽车空调回热器和新型连续螺旋折流板式回热器进行对比性的数值模拟研究。结果表明:以制冷剂R404A为工质,在相同质量流量下,回热器整体换热量提高32.2%,总传热系数提高41.7%;壳侧为制冷剂液体,壳侧平均传热系数提高3.5倍,同时壳侧压损也提高11倍;管侧为制冷剂气体,管侧平均传热系数和压损几乎不变。换热器整体回热效率从0.21提高到0.29,提高了38.1%。
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