Research on Performance of Heat Pump Systems Using R744 /R600 and R744 /R600a Mixtures as Refrigerants
Under the given conditions, the system performances of R744/R600 and R744/R600a to substitute for conventional refrigerant R22 in a subcritical heating cycle were theoretically analyzed respectively with consideration of heat transfer pinch point in heat exchangers. Results show that R744/R600 and R...
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| Format: | Article |
| Language: | zho |
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Journal of Refrigeration Magazines Agency Co., Ltd.
2011-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2011.06.035 |
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| _version_ | 1850027243121672192 |
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| author | Fan Xiaowei Zhang Xianping Wang Fengkun Shen Henggen Chen Shengguang |
| author_facet | Fan Xiaowei Zhang Xianping Wang Fengkun Shen Henggen Chen Shengguang |
| author_sort | Fan Xiaowei |
| collection | DOAJ |
| description | Under the given conditions, the system performances of R744/R600 and R744/R600a to substitute for conventional refrigerant R22 in a subcritical heating cycle were theoretically analyzed respectively with consideration of heat transfer pinch point in heat exchangers. Results show that R744/R600 and R744/R600a have different optimum mass fraction of which the system works with the maximum heating coefficient of performance (COPh). Compared to R22 system, the optimum COPh of R744/R600 and R744/R600a are increased by 11.98% and 8.24%; and increased by 36.43%, 36.24% compared to pure R600 and R600a; increased by 7.07%, 4.71% compared to pure R744 system in a transcritical cycle respectively. With the optimum mass fraction, condensation pressures of R744/R600 and R744/R600 are 0.84MPa and 1.18MPa lower than that of R22. Discharge temperatures are below 90℃ which are also lower than that of R22. |
| format | Article |
| id | doaj-art-b40134c656684cc890786ebefaece4cd |
| institution | DOAJ |
| issn | 0253-4339 |
| language | zho |
| publishDate | 2011-01-01 |
| publisher | Journal of Refrigeration Magazines Agency Co., Ltd. |
| record_format | Article |
| series | Zhileng xuebao |
| spelling | doaj-art-b40134c656684cc890786ebefaece4cd2025-08-20T03:00:16ZzhoJournal of Refrigeration Magazines Agency Co., Ltd.Zhileng xuebao0253-43392011-01-013266520324Research on Performance of Heat Pump Systems Using R744 /R600 and R744 /R600a Mixtures as RefrigerantsFan XiaoweiZhang XianpingWang FengkunShen HenggenChen ShengguangUnder the given conditions, the system performances of R744/R600 and R744/R600a to substitute for conventional refrigerant R22 in a subcritical heating cycle were theoretically analyzed respectively with consideration of heat transfer pinch point in heat exchangers. Results show that R744/R600 and R744/R600a have different optimum mass fraction of which the system works with the maximum heating coefficient of performance (COPh). Compared to R22 system, the optimum COPh of R744/R600 and R744/R600a are increased by 11.98% and 8.24%; and increased by 36.43%, 36.24% compared to pure R600 and R600a; increased by 7.07%, 4.71% compared to pure R744 system in a transcritical cycle respectively. With the optimum mass fraction, condensation pressures of R744/R600 and R744/R600 are 0.84MPa and 1.18MPa lower than that of R22. Discharge temperatures are below 90℃ which are also lower than that of R22.http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2011.06.035pyrologyZeotropic mixtureheat pumpR744/R600R744/R600aHeat transfer pinch point |
| spellingShingle | Fan Xiaowei Zhang Xianping Wang Fengkun Shen Henggen Chen Shengguang Research on Performance of Heat Pump Systems Using R744 /R600 and R744 /R600a Mixtures as Refrigerants Zhileng xuebao pyrology Zeotropic mixture heat pump R744/R600 R744/R600a Heat transfer pinch point |
| title | Research on Performance of Heat Pump Systems Using R744 /R600 and R744 /R600a Mixtures as Refrigerants |
| title_full | Research on Performance of Heat Pump Systems Using R744 /R600 and R744 /R600a Mixtures as Refrigerants |
| title_fullStr | Research on Performance of Heat Pump Systems Using R744 /R600 and R744 /R600a Mixtures as Refrigerants |
| title_full_unstemmed | Research on Performance of Heat Pump Systems Using R744 /R600 and R744 /R600a Mixtures as Refrigerants |
| title_short | Research on Performance of Heat Pump Systems Using R744 /R600 and R744 /R600a Mixtures as Refrigerants |
| title_sort | research on performance of heat pump systems using r744 r600 and r744 r600a mixtures as refrigerants |
| topic | pyrology Zeotropic mixture heat pump R744/R600 R744/R600a Heat transfer pinch point |
| url | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2011.06.035 |
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