满液式蒸发器变液位控制技术方案研究  

Technical scheme of variable liquid level control for flooded type evaporator

作　　者：程振军 禹志强 徐晓明 徐广明 许琨 Cheng Zhenjun;Yu Zhiqiang;Xu Xiaoming;Xu Guangming;Xu Kun(Qingdao Hisense Hitachi Air-conditioning Systems Co.,Ltd.)

机构地区：[1]青岛海信日立空调系统有限公司

出　　处：《制冷与空调》2022年第10期8-10,共3页Refrigeration and Air-Conditioning

摘　　要：采用固定液位控制技术方案时,满液式蒸发器在冷水机组部分负荷下无法实现最佳的换热效果。本文通过分析满液式蒸发器在冷水机组不同负荷率下检测液位与实际液位之间的关系,提出一种变液位控制技术方案,并对同一台螺杆式冷水机组满液式蒸发器分别采用固定液位控制技术方案和变液位控制技术方案进行性能对比测试,结果表明:相比采用固定液位控制技术方案,采用变液位控制技术方案的冷水机组的名义制冷量提升2.1%,COP提升2.0%,IPLV提升2.5%。Using the fixed liquid level control technical scheme,the flooded type evaporator can not realize the best heat transfer effect under the partial load of water chiller.Through analyzing the relationship between the measured liquid level and the actual liquid level of the flooded type evaporator under different load ratios of water chiller,one technical scheme of variable liquid level control is proposed.The performance comparison tests are conducted on one screw water chiller with flooded type evaporator using fixed liquid level control and variable liquid level control technical schemes respectively.The results show that compared with the technical scheme of fixed liquid level control,using the technical scheme of variable liquid level control,the nominal cooling capacity,COP and IPLV are improved by 2.1%,2.0% and 2.5%,respectively.

关 键 词：螺杆式冷水机组 满液式蒸发器 固定液位控制 变液位控制 

分 类 号：TB6[一般工业技术—制冷工程]