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在系统温度为３０℃时，对纯工质Ｒ１２、Ｒ１５２ａ及五种Ｒ２２组分浓度配比ＴＲ２２／Ｒｌ５２ａ非共沸混合工质，在水平单管外凝结换热特性进行实验研究，实验结果表明：（１）在五种Ｒ２２组分浓度配比ＴＲ２２／Ｒ１５２ａ混合工质的管外凝结换热系数均低于纯质Ｒ１５２ａ，但高子纯质Ｒ１２；（２）对于光管，Ｒ２２／Ｒ１５２ａ管外凝结换热系数是纯质Ｒ１２的１．３４～１．４３倍，低肋管为１．１５～１．３５倍、双侧强化管为１．２６～１．３６倍；（３）对低肋管，以Ｒ２２质量浓度为８％时，Ｒ２２／Ｒ１５２ａ管外凝结换热系数最高；双侧强化管其Ｒ２２的最佳浓度配比为１１％
When the system temperature is 30 ℃, the experimental results show that the condensing heat transfer characteristics outside the horizontal single-tube of pure working fluid R12, R152a and five kinds of R22 components with non-azeotropic mixture of TR22 / Rl52a, : (1) The condensation heat transfer coefficients outside the tube of TR22 / R152a mixed medium with five kinds of R22 components were lower than that of pure R152a, but high molecular R12; (2) For the light tube, R22 / R152a Condensation heat transfer coefficient is 1.34 to 1.43 times that of pure R12, 1.15 to 1.35 times for low-finned tubes, and 1.26 to 1.36 times for double-tempered tubes. (3) When R22 mass concentration is 8%, the condensation heat transfer coefficient outside R22 / R152a pipe is the highest. The optimal concentration ratio of R22 in double-side reinforced pipe is 11%