| 摘要: |
| 为研究压缩机频率与R410A/R410A复叠式制冷系统性能的关系，通过实验分析不同高（低）温级压缩机频率下系统的性能变化。结果表明：在同一工况下，低温级压缩机的频率从50 Hz升至62 Hz时，系统的中间温度升高2.36 ℃，高低温级压缩比的差值降低44.6%；高温级压缩机的频率从50 Hz升至62 Hz时，系统的中间温度降低3.7 ℃，高低温级压缩比的差值增加58.5%。高温级频率变化时系统复叠温差较小，系统性能系数COP高于低温级频率变化下的系统COP。在高（低）温级压缩机频率为53 Hz时，系统复叠温差最小，系统COP最优。 |
| 关键词: 压缩机频率 复叠系统 R410A COP |
| DOI： |
| Received:December 21, 2017Revised:April 02, 2018 |
| 基金项目: |
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| Effect of Compressor Frequency on the Performance of R410A/R410A Cascade Refrigeration System |
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| Abstract: |
| In this study, to understand the relationship between compressor frequency and the performance of the R410A/R410A cascade refrigeration system, changes in system performance under different frequency of high and low temperature grade compressors are conducted experimentally and analyzed. The results showed that under the same working conditions, a) the intermediate temperature of the system increased by 2.36 ℃, and the difference between the high and low temperature grade compression ratios was reduced by 44.6% when the frequency of a low pressure compressor increased from 50 to 62 Hz; b) the intermediate temperature of the system decreased by 3.7 ℃, and the high and low temperature grade compression ratios increased by 58.5% when the frequency of the high temperature compressor increased from 50 to 62 Hz. The system cascade temperature difference was smaller when the frequency of high temperature compressor changed, and the system coefficient of performance (COP) was higher than that of the system under the frequency change of low-temperature compressor. When the frequency of both the high and low temperature compressors was 53 Hz, the system cascade temperature difference was the least and the system COP was the optimal. |
| Key words: compressor frequency cascade system R410A COP |
