对透湿膜加湿器的加湿原理及其加湿热力性能进行了理论研究，得出了其加湿热力性能曲线。在国内现有技术条件下，研制了透湿膜加湿元件，并对其进行了性能测试，得出了透湿膜加湿元件的加湿量随空气温度、给水温度及风速变化的关系曲线和计算公式 The theory of humidification and humidification and thermal performance of the moisture permeable membrane humidifier was theoretically studied, and its humidification thermal performance curve was obtained. Under the current domestic conditions, a moisture-permeable membrane humidifying element was developed and tested for its performance. The relationship between the humidification amount of the moisture-permeable membrane humidification element and the variation of air temperature, feedwater temperature, and wind speed was obtained and the formula was calculated.