热电制冷在空气隙膜蒸馏系统中的应用研究  

Application Research of Thermoelectric Refrigeration in Air Gap Membrane Distillation System

作　　者：杨胜男[1] 杨晓宏[1] 田瑞[1,2] 尹秀翠[1] 

机构地区：[1]内蒙古工业大学能源与动力工程学院,呼和浩特010051 [2]内蒙古可再生能源重点实验室,呼和浩特010051

出　　处：《制冷学报》2013年第4期86-92,共7页Journal of Refrigeration

基　　金：国家自然科学基金(51266007)资助项目;内蒙古自然科学基金项目(2010ZD09)资助~~

摘　　要：设计了一种采用热电制冷的并接式空气隙膜蒸馏系统,以热电制冷替代机械式制冷为膜蒸馏过程提供冷量。通过对膜蒸馏过程与热电制冷的匹配研究,给出了最佳匹配工况的基本要求。制作了具有水冷散热热电制冷的膜蒸馏冷腔,对单片热电制冷器采用风冷散冷的制冷性能进行研究,结果表明:一定热端散热强度下,热电制冷膜蒸馏冷腔的冷面温度可满足膜蒸馏运行;当热端循环水进口温度为20℃、流量为100L/h、风机风量为660m3/h、热电制冷器工作电流为5.5A时,热电制冷量为87.1W,制冷效率为1.3,二者均为最大值,且预测相应理论蒸馏通量为40kg/(m2·h)。研究结果为小型太阳能热电制冷空气隙膜蒸馏系统的理论研究和实际应用奠定了基础。A Parallel-Connected AGMD system was designed, which uses thermoelectric refrigeration instead of mechanical refrigeration to provide refrigeration capacity for membrane distillation. With the analysis of matching method between membrane distillation and ther- moelectric refrigeration, the basic requirements of the optimum matching mode have been given out. A thermoelectric refrigeration mem- brane distillation cold chamber with water cooled heat dissipation components was built to research the refrigeration performance of a TEC with air-cooled model in its cold side. The results show that the cryogenic temperature of the thermoelectric refrigeration membrane distil- lation cold chamber can meet the membrane distillation operation requirement under constant intensity of heat dissipation. Under the ex- perimental conditions of inlet water of 20℃ and 100L/h and air flow rate of 660m^3/h, when the working current of TEC is 5.5A, the ther- moelectric refrigerating capacity is 87.1W and cooling efficiency is 1.3, which reaches the maximum of both. The corresponding theoreti- cal distillation flux is calculated to be 40kg/（ m2. h）. This investigation establishes the foundation for the theoretical research and practical application of solar air gap membrane distillation system with thermoelectric refrigeration.

关 键 词：膜蒸馏 热电制冷 匹配理论 

分 类 号：TB66[一般工业技术—制冷工程] O472.7[理学—半导体物理]