低品位余热氨水吸收式制冷机理论与实验研究  

Theory and experimental study on ammonia water absorption refrigerating machine based on low grade heat

作　　者：陈光[1] 董璐[1] 郑鑫[1] 李智虎[1] 

机构地区：[1]安徽工业大学建筑工程学院,马鞍山243000

出　　处：《低温与超导》2014年第4期62-66,共5页Cryogenics and Superconductivity

摘　　要：利用工业企业300℃以下烟气余热实现工作区域供冷,解决企业生活区域供冷的同时实现节能减排。建立了余热式氨水吸收式制冷的热力学模型,在此基础上通过实验验证了不同操作条件下制冷系统运行的状态。针对实验样机得到余热烟气温度为280℃时系统存在最优的能源利用效率,冷却水进口温度升高5℃,制冷系数COP下降了0.047,实验样机COP不低于0.42,为优化利用低品位余热资源的制冷系统提供一定的理论基础。By taking advantage of the waste heat of the flue gas from industrial enterprises which is under 300℃, the work area cold supply can be met to realize energy conservation and emissions reduction. An thermodynamic model of the ammonia ab- sorption system with low grade heat source was established in this paper, and experiments were done to verify the refrigeration system＇s operation state under various operation conditions based on this model. According to the experimental prototype, the opti- mal energy efficiency could be achieved when the temperature of the waste heat of the flue gas was 280℃. The refrigeration coef- ficient COP decreased by 0.047 while the inlet cooling water temperature increased 5℃. The prototype COP was higher than 0. 42. It provides the theoretical foundation for the application of refrigeration system on low grade waste heat resources.

关 键 词：低品位余热 吸收式制冷 建模 运行特性 节能 

分 类 号：TB616[一般工业技术—制冷工程]