Thermodynamic performance assessment and application feasibility analysis of small heat pump water heater using CO2/R41 azeotropy mixture as refrigerant for sustainable development
In order to improve the application possibility of CO2/R41 azeotropy mixture in the refrigeration industry, the optimum mass ratio of composition is defined and determined according to the thermodynamic properties and safety. On the basis of the first and second laws of thermodynamics, a model is pr...
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| Format: | Article |
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Frontiers Media S.A.
2023-06-01
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| Series: | Frontiers in Energy Research |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenrg.2023.1192145/full |
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| author | Dong Wang Mengxue Li Zhipan Gu Shengong Mei Sensen Deng Yuehong Lu Fangwen Yu |
| author_facet | Dong Wang Mengxue Li Zhipan Gu Shengong Mei Sensen Deng Yuehong Lu Fangwen Yu |
| author_sort | Dong Wang |
| collection | DOAJ |
| description | In order to improve the application possibility of CO2/R41 azeotropy mixture in the refrigeration industry, the optimum mass ratio of composition is defined and determined according to the thermodynamic properties and safety. On the basis of the first and second laws of thermodynamics, a model is proposed to evaluate the performance of CO2/R41 single-stage transcritical cycle (CO2/R41 cycle) in which a throttling valve is integrated and CO2/R41 azeotropy refrigerant is adopted. The performance of CO2/R41 cycle at the optimum mass ratio of CO2/R41 azeotropy mixture is then compared with that of a CO2 two-stage transcritical cycle with throttling valve (CO2 two-stage cycle) and that of a CO2 single-stage transcritical cycle with expander (CO2 expander cycle). The results show that the optimum mass ratio of CO2/R41 azeotropy mixture is 0.583/0.417. Compared with CO2 two-stage cycle and CO2 expander cycle, CO2/R41 cycle has the advantages of a simpler structure, lower optimum high pressure, appropriate discharge temperature of the compressor, and higher COP. Therefore, the CO2/R41 azeotropy mixture with the mass ratio of 0.583/0.417 is eco-friendly and can be considered as a good alternative refrigerant for application in the refrigeration industry. The simple CO2/R41 cycle shows great feasibility to replace the complex CO2 two-stage cycle and CO2 expander cycle. |
| first_indexed | 2024-03-13T02:32:43Z |
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| id | doaj.art-f28ca1b86712490d8a036c0f3be69b30 |
| institution | Directory Open Access Journal |
| issn | 2296-598X |
| language | English |
| last_indexed | 2024-03-13T02:32:43Z |
| publishDate | 2023-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Energy Research |
| spelling | doaj.art-f28ca1b86712490d8a036c0f3be69b302023-06-29T14:02:10ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2023-06-011110.3389/fenrg.2023.11921451192145Thermodynamic performance assessment and application feasibility analysis of small heat pump water heater using CO2/R41 azeotropy mixture as refrigerant for sustainable developmentDong Wang0Mengxue Li1Zhipan Gu2Shengong Mei3Sensen Deng4Yuehong Lu5Fangwen Yu6School of Civil Engineering and Architecture, Anhui University of Technology, Ma’anshan, ChinaSchool of Civil Engineering and Architecture, Anhui University of Technology, Ma’anshan, ChinaSchool of Civil Engineering and Architecture, Jiaxing University, Jiaxing, ChinaSchool of Civil Engineering and Architecture, Anhui University of Technology, Ma’anshan, ChinaSchool of Civil Engineering and Architecture, Anhui University of Technology, Ma’anshan, ChinaSchool of Civil Engineering and Architecture, Anhui University of Technology, Ma’anshan, ChinaAnhui MBO Intelligent Technology Co. Ltd., Wuhu, ChinaIn order to improve the application possibility of CO2/R41 azeotropy mixture in the refrigeration industry, the optimum mass ratio of composition is defined and determined according to the thermodynamic properties and safety. On the basis of the first and second laws of thermodynamics, a model is proposed to evaluate the performance of CO2/R41 single-stage transcritical cycle (CO2/R41 cycle) in which a throttling valve is integrated and CO2/R41 azeotropy refrigerant is adopted. The performance of CO2/R41 cycle at the optimum mass ratio of CO2/R41 azeotropy mixture is then compared with that of a CO2 two-stage transcritical cycle with throttling valve (CO2 two-stage cycle) and that of a CO2 single-stage transcritical cycle with expander (CO2 expander cycle). The results show that the optimum mass ratio of CO2/R41 azeotropy mixture is 0.583/0.417. Compared with CO2 two-stage cycle and CO2 expander cycle, CO2/R41 cycle has the advantages of a simpler structure, lower optimum high pressure, appropriate discharge temperature of the compressor, and higher COP. Therefore, the CO2/R41 azeotropy mixture with the mass ratio of 0.583/0.417 is eco-friendly and can be considered as a good alternative refrigerant for application in the refrigeration industry. The simple CO2/R41 cycle shows great feasibility to replace the complex CO2 two-stage cycle and CO2 expander cycle.https://www.frontiersin.org/articles/10.3389/fenrg.2023.1192145/fullCO2/R41azeotropyoptimum mass ratioheat pump water heaterthermodynamic analysis |
| spellingShingle | Dong Wang Mengxue Li Zhipan Gu Shengong Mei Sensen Deng Yuehong Lu Fangwen Yu Thermodynamic performance assessment and application feasibility analysis of small heat pump water heater using CO2/R41 azeotropy mixture as refrigerant for sustainable development Frontiers in Energy Research CO2/R41 azeotropy optimum mass ratio heat pump water heater thermodynamic analysis |
| title | Thermodynamic performance assessment and application feasibility analysis of small heat pump water heater using CO2/R41 azeotropy mixture as refrigerant for sustainable development |
| title_full | Thermodynamic performance assessment and application feasibility analysis of small heat pump water heater using CO2/R41 azeotropy mixture as refrigerant for sustainable development |
| title_fullStr | Thermodynamic performance assessment and application feasibility analysis of small heat pump water heater using CO2/R41 azeotropy mixture as refrigerant for sustainable development |
| title_full_unstemmed | Thermodynamic performance assessment and application feasibility analysis of small heat pump water heater using CO2/R41 azeotropy mixture as refrigerant for sustainable development |
| title_short | Thermodynamic performance assessment and application feasibility analysis of small heat pump water heater using CO2/R41 azeotropy mixture as refrigerant for sustainable development |
| title_sort | thermodynamic performance assessment and application feasibility analysis of small heat pump water heater using co2 r41 azeotropy mixture as refrigerant for sustainable development |
| topic | CO2/R41 azeotropy optimum mass ratio heat pump water heater thermodynamic analysis |
| url | https://www.frontiersin.org/articles/10.3389/fenrg.2023.1192145/full |
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