| 摘要: |
| 利用变频滚动转子式压缩机制冷循环实验台，研究了R32和R22制冷系统过热度对系统性能的影响。定量分析了R32制冷系统在过热状态下的一些规律，并且通过对比工况1#下R32和R22的系统参数，分析了R32优于R22的原因，研究了R32商用空调最佳过热度的调节范围。结果表明：R32制冷系统各项参数变化趋势与R22基本一致，R32制冷系统具有较好的制冷效果；在工况1#下，相比R22制冷系统，R32系统的制冷量提高约为42%，COP提高6.8%，系统压比增加7%左右，系统性能更稳定；在空调工况下，R32系统过热度控制在4℃以内，具有较好的节能效果。 |
| 关键词: R32 R22 系统性能 过热度 滚动转子式压缩机 |
| DOI： |
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| 基金项目: |
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| Comparison of Influences of Superheat Degree on R32 and R22 Rolling Piston Compressor Refrigeration System |
| Wang Chao,Tao Leren,Wu Chao,Yang Lihui,Li Qingpu,Yu Zhongyang |
| (University of Shanghai for Science and Technology;United Technologies Company Overview) |
| Abstract: |
| The influences of superheat degree on R22 and R32 refrigeration system’s performances are studied experimentally with variable frequency rolling piston compressor refrigeration loop test bench. With the quantitative analysis, some change trends of R32 refrigeration system under the superheat condition are summarized, and the optimum superheat adjustment range of R32 commercial air conditioning is studied by comparing the system’s parameters of R32 with R22’s under the condition of Case 1,. The experimental results show that: the change trends of the system’s parameters for R32 are similar with that for R22, and the R32 refrigeration system has a higher refrigerating capacity; under the condition of Case 1, the refrigerating capacity and COP of R32 are improved about 42% and 6.8% respectively compared to R22; the system’s pressure ratio is increased about 7%, which indicates R32 system is more stable. At the air-conditioned state, the better energy saving effect can be reached when the superheated degree of R32 system is controlled less than 4℃. |
| Key words: R32 R22 system’s performance superheat degree rolling piston compressor |
