膜蒸馏技术是传统蒸馏工艺与膜分离技术相结合的一种新型高效分离技术.根据膜蒸馏的机理和能量转换过程的特点,通过焓-浓度图等方法,对膜蒸馏技术应用于典型能量转换过程的热工学和制冷技术中的原理及可行性进行了分析,主要包括利用膜蒸馏技术对溶液的浓缩分离特性,提出了基于真空膜蒸馏技术的盐类溶液的真空膜蒸馏解吸/再生过程,可应用在溴化锂吸收式制冷系统和蓄能系统中,也可应用在温/湿度独立控制空调系统中溶液除湿剂的再生循环系统中,目的是使系统能充分利用低品位的废热、余热以及可再生能源如太阳能、地热能等廉价能源,提高热源的可利用温差;利用膜蒸馏技术中因传质而携带的潜热传递作用和膜间导热作用,提出了基于直接接触式膜蒸馏的新型膜式热交换器,可应用于溴化锂吸收式制冷系统的溶液热交换器和可进行热量与纯净水双重回收的特种换热器中.对于膜蒸馏技术能量转换过程的工程应用问题,指出了今后的主要研究重点和内容. According to the mechanism of membrane distillation and the characteristics of energy conversion process, membrane distillation technology is a new type of high-efficiency separation technology combining traditional distillation technology with membrane separation technology. The membrane distillation technology is applied to typical energy conversion The principle and feasibility of the thermodynamics and refrigeration technology in process are analyzed, including the concentration and separation of the solution by membrane distillation technology, the vacuum membrane desorption / regeneration process of salt solution based on vacuum membrane distillation technology, It can be used in lithium bromide absorption refrigerating system and energy storage system, and can also be used in regenerative circulation system of solution desiccant in temperature / humidity independent control air-conditioning system so that the system can make full use of low-grade waste heat, waste heat and Renewable energy such as solar energy, geothermal energy and other low-cost energy sources, to improve the heat available temperature difference; the use of membrane distillation technology due to mass transfer and carry latent heat transfer effect between the membrane, based on direct contact membrane distillation of the new film Heat Exchangers, Solution Heat Exchangers for Lithium Bromide Absorption Refrigeration Systems and Heat Exchangers for Heat and Purity Double recovery of special heat exchangers. For the application of membrane distillation technology engineering of energy conversion processes, are pointed out major research focus and content.