滚动转子式压缩机储液器对性能的影响分析
Analysis the impact of rolling piston compressor reservoirs on performance
吴飞 1廖四清 1陈磊1
作者信息
- 1. 广东美芝制冷设备有限公司 广东 佛山 528333;美的集团股份有限公司 广东 佛山 528333
- 折叠
摘要
基于储液器在系统中发挥的功能,研究传统高背压转子式压缩机(简称有储机型)取消储液器(简称无储机型)后的性能变化趋势,并对基于系统参数的变化分析原因,为后续取消储液器的系统构架提供可行性分析.首先,通过单体仿真,发现在GX工况下(吸气过热度8℃),有储机和无储机的COP基本一致,试验台实测的结果是两者COP差异<0.4％,与仿真数据基本吻合;而通过搭载空调系统测试以及在单体吸气干度试验台复现,发现直接替换压缩机,系统配置不变更,无储机型的吸气带液量增大,能效衰减约5.2％,而通过调整节流组件及制冷剂封入量,可以实现无储机型整机性能不衰减(能效差异<0.5％),此时两者的吸气带液量基本一致.最后,摸底了调整系统配置之后的Max排气温度,发现温度不超过115℃,符合压缩机规格书要求.
Abstract
Based on the function of the accumulator in the system,this paper studies the performance change trend of the traditional high-back pressure rotary compressor(Abbreviations:models with reservoirs)after canceling the accumulator(Abbreviations:models without reservoirs).It also analyzes the reasons for the changes based on system parameters,and provides a feasibility analysis for the subsequent system architecture without an accumulator.Firstly,through single-unit simulation,it was found that under the single-unit GX working condition(8℃ suction superheat),the COP of the system with and without accumulator was basically the same.The result of the single-unit test showed that the COP difference between the two was less than 0.4％,which was basically consistent with the simulation data.However,through air conditioning system testing and reproduction on a single-unit suction dryness test bench,it was found that directly replacing the compressor without changing the system configuration,the non-accumulator model has an increased liquid-carrying capacity during suction and a energy efficiency decline of about 5.2％.By adjusting the throttling components and refrigerant charge,the non-accumulator model's overall performance can be maintained without decline(energy efficiency difference<0.5％),and the liquid-carrying capacity of the two is basically the same.Finally,after adjusting the system configuration,the maximum exhaust temperature was determined,and it was found that the temperature did not exceed 115℃,which meets the specifications of the compressor manual.
关键词
压缩机/取消储液器/性能衰减/系统配置/吸气带液Key words
Compressor/Eliminate reservoirs/Performance degradation/System configuration/liquid-carrying capacity during suction引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据