溴化锂吸收式冷水机组稀溶液循环量精准控制系统研究  

Research on precision control system for dilute solution circulation of LiBr absorption chiller

作　　者：徐成毅 王立群 张佳琳 王龙 吴永东 

机构地区：[1]松下制冷(大连)有限公司

出　　处：《制冷与空调》2017年第3期10-12,共3页Refrigeration and Air-Conditioning

摘　　要：溴化锂吸收式冷水机组的稀溶液循环量的合理调节对机组的经济运行十分重要。本文提出一种稀溶液循环量精准控制系统,通过设定的参数值和再生器温度、冷却水温度等计算吸收液泵频率值,采用液位高度修正频率及控制泵启停的方式,得出精准的稀溶液循环量,优化溴化锂吸收式冷水机组在各工况下运行的稳定性与经济性。The proper adjustment for dilute solution circulation of LiBr absorption chil- ler is important to the unit＇s economical operation. The precision control system for dilute solution circulation is put forward. Through calculating the frequency of absorbent pump by the parameter setting, the generator temperature, cooling water temperature and oth- ers, then modifying the frequency by the control of solution level and pump on-off, the proper dilute solution circulation value can be obtained and the stability and economic of LiBr absorption chiller under different working conditions are optimized.

关 键 词：溴化锂吸收式冷水机组 变频 循环量 控制系统 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]