NUMERICAL SIMULATION ON THE PERFORMANCE OF REGENERATOR IN LIQUID DESICCANT AIR CONDITIONING SYSTEMS
Regenerator which supplies strong solution to dehumidifier is an important component in liquid desiccant air-conditioning system(LDACS). The regenerator performance will straightly influence the efficiency of the entire LDACS. The operating principles of the multi-stage regenerator are introduced first. Hot water with the temperature of 70-80℃ is the heat source for the regeneration process. Outdoor air is being contacted with liquid desiccant and takes the moisture away from the desiccant. There are three fluids of air, solution flowing between stages, and hot water with incertitude relative flow directions in the regenerator. According to the different relative flow directions, four types of multi-stage regenerator are constructed. The paper analyzes the regenerating effect of the four types and selects the best one of them by theory and simulation. Based on the best type, effects of inlet parameters of air, solution and hot water on the regenerator performance are studied. Flow ratio of air to solute flowing between stages, hot water inlet temperature, air inlet temperature and air inlet humidity ratio are the most effective factors.
Liquid desiccant regenerator efficiency concentration
Yi Xiaoqin Liu Xiaohua Jiang Yi
Department of Building Science and Technology, Tsinghua University, Beijing 100084, China
国际会议
北京
英文
2007-09-07（万方平台首次上网日期，不代表论文的发表时间）