新型太阳能吸收式制冷循环系统性能分析  

ON THE PERFORMANCE ANALYSIS OF A NEW ABSORPTION REFRIGERATION CYCLE SYSTEM FOR SOLAR ENERGY

作　　者：刘丽[1] 孔兵[1] 张迪凡[1] 

机构地区：[1]巢湖学院机械与电子工程学院,安徽巢湖238000

出　　处：《巢湖学院学报》2015年第3期40-43,共4页Journal of Chaohu University

基　　金：安徽省教育厅科学研究项目(项目编号:KJ2013B158)

摘　　要：在传统两级溴化锂吸收式制冷循环的基础上，从增大热源可利用温差考虑，提串了一种由太阳能驱动的新型吸收式制冷循环，分析计算了低压发生器压力（中间压力）和中间溶液浓度变化对系统热力系数COP和热源可利用温差的影响。结果表明，在发生热源温度850C～95℃的范围内，中间压力在1.6KPa（12mmHg）和2.2KPa（16.5mmHg）之间取值新型循环有较高的热力系数和较大的热源可利用温差。On the basis of the traditional two-level lithium bromide absorption refrigeration cycle, considering that the heat can be increased by the temperature difference, this paper proposes a new absorption refrigeration cycle driven by solar energy to an- alyze and calculate the influence of the system thermal coefficient COP as well as available temperature difference made by the heat source under the low-voltage generator pressure （intermediate pressure） and intermediate solution concentration change. The results show that, within the scope of the occurrence of the heat source temperature of 85℃-95℃, the intermediate pressure be- tween 1.6KPa （12mmHg） and 2.2KPa （16.SmmHg） can obtain the new value which has a higher thermodynamic cycle coeffi- cient and the temperature difference of a larger heat source.

关 键 词：太阳能 吸收式制冷 溴化锂 热源可利用温差 热力系数COP 

分 类 号：TK512[动力工程及工程热物理—热能工程]