化工学报2016，Vol.67Issue(z2)：275-283,9.DOI:10.11949/j.issn.0438-1157.20161411
一种低位热驱动除湿冷却空调系统的热性能分析
Thermal performance analysis of liquid desiccant evaporative cooling air-conditioning system driven by low-grade heat
摘要
Abstract
Liquid desiccant evaporative cooling air-conditioning system (LDECS),which combines both advantages of liquid desiccant and evaporative cooling technology,is a very promising alternative to the non-vapor-compression air-conditioning system.In this paper, a LDECS driven by low-grade heat is proposed,which consists of a liquid desiccant system with self-cycles that handles the total latent load and a regenerative evaporative cooler that removes the sensible heat.Mathematical models of the major components of the system are established to investigate the effects of four key parameters, namely, regenerator inlet solution temperature T s,reg,in , solution-to-solution heat exchanger effectiveness εSSHX , ambient air temperature and relative humidity on steady-state thermal performance of the LDECS used as a dedicated outdoor air system.The results show that the supply air of 17.9℃ and 9.2 g · kg-1 with the thermal coefficient of performance TCOP of 0.56 can be achieved under the typical summer condition of Nanjing. The T s,reg,in of about 70℃ can achieve a high TCOP with the qualified supply air condition. The impacts ofεSSHX on TCOP and the capacities of solution heater and cooler are more significant when the value of self-cycle ratio is smaller.Besides,the proposed LDECS is suitable for the application in hot-humid zone.关键词
水溶液/蒸发冷却/再生/低品位热能/数学模拟Key words
aqueous solution/evaporative cooling/regeneration/low-grade heat/mathematical modeling分类
建筑与水利引用本文复制引用
张凡,殷勇高..一种低位热驱动除湿冷却空调系统的热性能分析[J].化工学报,2016,67(z2):275-283,9.基金项目
国家科技支撑计划项目(2014BAJ01B06) （2014BAJ01B06）
江苏省杰出青年基金项目(BK20140026)。@@@@supported by the National Key Technology Support Program (2014BAJ01B06) and the Foundation for Distinguished Young Scientists of Jiangsu Province (BK20140026) （BK20140026）
