制冷技术2016，Vol.36Issue(5)：6-12,7.DOI:10.3969/j.issn.2095-4468.2016.05.103
温度极化对带有膜热交换器的溴化锂吸收式制冷系统性能的影响分析
Analysis on the Effect of Temperature Polarization on Performance of Lithium Bromide Absorption Refrigeration System with Membrane Heat Exchanger
倪瑜菲 1杜垲 1李舒宏1
作者信息
- 1. 东南大学能源与环境学院，江苏南京 210096
- 折叠
摘要
Abstract
The forming mechanism of temperature polarization in the membrane distillation is explained. And a mathematic model of heat and mass transfer in the membrane heat exchanger is developed and validated by means of experimental data in the existing literatures. The difference of temperature between the bulk solution and membrane wall and the distribution of temperature polarization coefficient (TPC) along the tube length are analyzed. Under the conditions of different heat source temperature and the inlet temperature of cooling water and freezing water, the effect of temperature polarization to the coefficient of performance (COP) of the membrane heat exchanger lithium bromide absorption refrigeration system is discussed. The results show that, the decrease rate of COP increases with the increasing of heat source temperature and decreases with the increasing of cooling water inlet temperature, while it is essentially constant with the change of freezing water inlet temperature.关键词
温度极化/膜热交换器/溴化锂/吸收式制冷Key words
Temperature polarization/Membrane heat exchanger/Lithium bromide/Absorption refrigeration引用本文复制引用
倪瑜菲,杜垲,李舒宏..温度极化对带有膜热交换器的溴化锂吸收式制冷系统性能的影响分析[J].制冷技术,2016,36(5):6-12,7.
