【摘要】 对氟里昂制冷工质Ｒ２２在水平单管外的凝结换热性能进行了实验研究．传热管分别采用光管、低肋管及６根不同几何参数的双侧强化高效传热管．试验结果表明：强化管内侧强化换热效果为光管的２倍左右，管外凝结换热系数是光管的５～７倍．在冷凝温度为４０℃、管内冷却水流速范围为０．５～３．２ｍ／ｓ时，各强化管总的传热系数是低肋管的１～２倍，是光管的４～６倍更多还原

【Abstract】 The experimental study on the performance of film condensation of R22 outside single horizontal tube was conducted with plain tube, low fin tube and six two side enhanced tubes with different geometries. The test results show that augmentation is apparently achieved: the convective heat transfer inside double enhanced tube are approximately two times as that of plain tube, and the film condensation coefficient on the surface outside the enhanced tube is 5 to 7 times as that of outside plain tube. The overall heat transfer coefficients for six enhanced tube are 1 to 2 times as that of low finned tube and 4 to 6 times that of plain tube when condensation temperature t k equals to 40 ℃ and cooling water velocity inside the tube ranges from 0 5 m/s to 3 2 m/s.更多还原