热泵膜蒸馏装置的能量平衡分析

Analysis of Energy Balance of Heat Pump Membrane Distillation Equipment

热泵膜蒸馏装置具有能耗低、可在常压下对热敏料液进行低温浓缩等优势。针对热泵与膜组件直接结合会导致料液工作温度不易控制的问题,给出了八种解决方案,并对各方案的辅冷器面积、产水能耗进行了对比分析。分析结果表明:辅冷器设置在加热器侧时,其面积可较小,但产水能耗较大;辅冷器设置在冷却器侧时,其面积较大,但产水能耗较小。

Heat pump membrane distillation （HPMD） has many advantages, such as the low energy consumption, the cryoconcentration of the thermal-sensitive material at the atmospheric pressure, etc. Since its running temperature is hard to control when the heat pump and the membrane module are directly bonded, 8 solutions are given. Moreover, the auxiliary cooler area and HPMD energy consumption of each solution is calculated and compared. The results show that the low auxiliary cooler area and hight HPMD energy consumption is obtained when the auxiliary cooler is beside the heater, while the outcome is converse when the auxiliary cooler is beside the eoolel＇.