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 Experimental study on the condensation heat transfer performance of Freon refrigerant R22 outside horizontal single tube was carried out. Heat transfer tubes were used light, low-cost tubes and six different geometric parameters of double-sided high-efficiency heat transfer tubes. The experimental results show that the heat transfer enhancement inside the strengthened tube is about 2 times that of the light tube, and the heat transfer coefficient outside the tube is 5 to 7 times that of the light tube. When the condensing temperature is 40 ℃ and the flow velocity of cooling water in the pipe is 0.5 ~ 3.2m / s, the total heat transfer coefficient of each reinforced pipe is 1 ~ 2 times of that of low-ribbed pipe and 4 ~ 6 times of the light pipe