组合式冷水机组部分负荷性能分析与实验研究  

Partial Load Performance Analysis and Experimental Study of Combined Water Chiller

作　　者：谢垚 匡胜严 贺金 方雷 李冬波 XIE Yao;KUANG Shengyan;HE Jin;FANG Lei;LI Dongbo(Broad air conditioning Co.Ltd.,Changsha 430138,Hunan,China)

机构地区：[1]远大空调有限公司,湖南长沙430138

出　　处：《制冷技术》2024年第4期28-33,共6页Chinese Journal of Refrigeration Technology

摘　　要：建立实验装置分别对定频离心式冷水机组(制冷量2090 kW)、变频磁悬浮冷水机组(制冷量1045 kW)以及组合式冷水机组(制冷量3140 kW)的名义工况性能系数(COP)和综合部分负荷性能系数(IPLV)进行测试和分析。结果表明:三种冷水机组的名义工况性能系数相差不大(分别为6.05、6.10和6.15),但综合部分性能系数差异很大。定频离心式冷水机组在75%负荷区间性能系数最高为6.43,在50%负荷以下急剧下降,综合部分负荷系数为5.99。变频磁悬浮冷水机组随着负荷的降低性能系数升高,综合部分负荷系数达9.68。由上述两款冷水机组的压缩机构成的组合式冷水机组具备宽泛的负荷调节能力和低成本的特点,综合部分负荷系数为7.5。冷水机组最终型式可根据项目负荷特征以及项目投资来确定。The experimental setup is establish to test and analyze the coefficient of performance(COP)and the integrated part-load value(IPLV)of a fixed-frequency centrifugal chiller(cooling capacity 2090 kW),a variable-frequency magnetic-bearing chiller(cooling capacity 1045 kW),and a combined chiller with a fixed-frequency centrifugal compressor and a magnetic-bearing compressor(cooling capacity 3140 kW).The results indicate that the COP of the three types of chillers is similar(6.05,6.10,and 6.15,respectively),but there is a significant difference in IPLV.The maximum COP of the fixed-frequency centrifugal chiller is 6.43 in the 75%load range,and sharply decreasing below 50%load,with an IPLV of 5.99.The COP of the variable-frequency magnetic-bearing chiller increases as the load decreases,reaching an IPLV of 9.68.The combined chiller,consisting of compressors from the two chillers,possesses a wide range of load regulation capabilities and low-cost characteristics,with an IPLV of 7.5.The final type of chiller can be determined based on the project's load characteristics and investment considerations.

关 键 词：组合式冷水机组 磁悬浮压缩机 定频离心式压缩机 性能系数 综合部分负荷性能系数 

分 类 号：TB611[一般工业技术—制冷工程] TQ051.5[化学工程]