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摘 要 ：传统家用空调的热湿耦合处理不能保证室内热舒适要求，空调系统能耗大，而热湿分控为此提供了更好的解决方案，但对可应用于户式的热湿分控机组模式的研究很少。本文使用双蒸发器空调机组作为户式冷热源，在长沙进行安装，并对不同工况下机组的运行性能进行研究。结果表明：双蒸发器空调机组可以实现户式热湿分控；不同蒸发器间制冷量的合理有效分配是机组得以稳定运行并达到良好节能效果的重要因素，结论对机组控制策略的优化有重要的指导意义。 关键词 ：户式热湿分控；双蒸发器空调机组；变工况；制冷量分配；控制策略 Study On Off-Design Performance Of Residential Heat Humidity Independent Control Central Air-Conditioning System Liu Chang Zhang Xu Zhou Xiang Institute of HVACnbsp; Abstract: The traditional room air-conditioner use the method of temperature humidity coupling processing, which can not guarantee the requirement of indoor thermal comfort and result in the large energy consumption. While temperature humidity independent control provides a better solution. However, there are few research about the temperature humidity independent control air-conditioner used in residential buildings. In this paper, a kind of bi-evaporator air-conditioner was installed in Changsha, and the operating performance of the air-conditioner running at variable conditions was researched. The results showed that it can realize the precise control on temperature and humidity in separated room; how to distribute the cooling capacity of the different evaporators reasonably and effectively is the key point to guarantee the steady operation of air-conditioner and the better energy saving effect. It is directive to the optimization of control strategy on air-conditioner. Keywords: residential temperature humidity independent control; bi-evaporator air-conditioner; distribution of cooling capacity; control strategy