In this study, a detailed modeling applicable for membrane dehumidifying system is proposed. This system contains a membrane module, 2-stage vacuum pumps, a condenser, and a regulating valve. The proposed model does not need any prior setting of the vacuum level of the permeate side, and the predictive results are in line with the benchmark. It is found that the COP (coefficient of performance) is 55% higher while the EF (energy factor) is almost 150% higher than the conventional one having the same dehumidifying capacity. For inlet with a fixed relative humidity, both COP and EF are increasd gradually when raising the inlet temperature. Yet the COP and EF reaches the peak values of 5.29 and 6.80 kg/kWh, respectively at a dry bulb temperature near 25.6 °C. Once surpassing this threshold temperature, a pronounced flip-over is seen for both COP and EF. The optimal COP can be obtained by simultaneously adjusting volumetric flowrate and condenser size rather than only adjusting each one individually.

在这项研究中，提出了适用于膜除湿系统的详细模型。该系统包含一个膜组件，两级真空泵，一个冷凝器和一个调节阀。提出的模型不需要事先设置渗透侧的真空水平，并且预测结果与基准一致。发现与具有相同除湿能力的传统COP相比，COP（性能系数）高55％，而EF（能量因数）几乎高150％。对于相对湿度固定的入口，当升高入口温度时，COP和EF会逐渐增加。然而，在接近25.6°C的干球温度下，COP和EF分别达到5.29和6.80 kg / kWh的峰值。一旦超过此阈值温度，COP和EF均出现明显的翻转。可以通过同时调节体积流量和冷凝器尺寸而不是单独调节每个冷凝器来获得最佳COP。