Optimization and energy efficiency analysis of heat pump-vacuum membrane distillation process
The experimental study is focus on the heat imbalance in heat pump-membrane distillation process.The heat pump system heat balance is realized by using two vaccum membrane distillation modules and merging them into the liquid circulation flow path,so that they can respectively undertake the heat recovery and exclude excess heat.According to the test,it is found that the MD1200 and MD200 were the best dual membrane combination.The dual-membrane combination was used for continuous 8h salt-containing membrane distillation treatment,and the test results show that the dual-membrane-module combination can obtain stable and continuous operation of membrane distillation,with a total water yield of up to 1.9 L/h,and a maximum specific energy consumption of the system of up to 310 W·h/kg of water.The energy consumption performance is better than that of the membrane distillation process without heat recovery,and is comparable to the industrialized multi-effect membrane distillation process,which is expected to become a new low-energy membrane distillation process that can be applied industrially.
heat pumpmembrane distillationhydrophobic membranewater productionspecific energy consumption
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万方数据
维普
