制冷学报2011，Vol.32Issue(1)：7-11,5.DOI:10.3969/j.issn.0253-4339.2011.01.007
两种回热型NH3-H2O-LiBr吸收式制冷机的实验研究
Experimental Research on two kinds of NH3-H2O-LiBr Absorption Chillers with Heat-regenerators
摘要
Abstract
In order to improve the performance of the prototype NH3-H2O-LiBr absorption chiller without heat regenerators, the concept of this kind of refrigeration system with single or double regenerators was firstly proposed, and the corresponding experiments of the two prototypes were carried out respectively. The experiments indicated that pressure in the generator could be significantly reduced during the process of generation after adding lithium bromide to the system for the single regenerator system, so the system safety can be improved. However, due to the direct connection between the regenerator and the absorber, the pressure in the absorber increased sharply with the continual increase of the regenerator temperature if the temperature of the regenerator reaches up to 35 °C, which leads to refrigeration deterioration correspondingly. For the double regenerators system, problems existing in the single regenerator system could be solved effectively as a result of the structural improvement, and the regenerative capabilities could be truly fulfilled. Compared with the non-regenerative absorption system, the coefficient of performance (COP) was significantly improved. The COP of the system with double regenerators was increased from 0.276 to 0.457 with an improvement of 65.35% on condition that NH3 concentration was 50% and LiBr concentration was 15%.关键词
热工学/吸收式制冷机/氨-水-溴化锂/回热器/性能系数Key words
Pyrology/ Absorption chiller/ Ammonia-water-lithium bromide/ Regenerator/ Coefficient of performance分类
通用工业技术引用本文复制引用
刘科伟,吴裕远,王永涛,胡凤姣..两种回热型NH3-H2O-LiBr吸收式制冷机的实验研究[J].制冷学报,2011,32(1):7-11,5.基金项目
国家自然科学基金项目(50776064). （50776064）
