Energy and emission performance of enhanced vapor injection air source heat pump system using low global warming potential refrigerants in different climate regions
In order to meet the space heating requirement of residential buildings in low-temperature areas, the performance of the enhanced vapor injection (EVI) air source heat pump (ASHP) system and single-stage compression heat pump system (BASE) using low global warming potential (GWP) working fluids in l...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-11-01
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| Series: | Frontiers in Energy Research |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenrg.2023.1297866/full |
| _version_ | 1797627475244613632 |
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| author | Libiao Zhang Wuhui Jing Qilong Wang Jianing Zhang Peifang Yang |
| author_facet | Libiao Zhang Wuhui Jing Qilong Wang Jianing Zhang Peifang Yang |
| author_sort | Libiao Zhang |
| collection | DOAJ |
| description | In order to meet the space heating requirement of residential buildings in low-temperature areas, the performance of the enhanced vapor injection (EVI) air source heat pump (ASHP) system and single-stage compression heat pump system (BASE) using low global warming potential (GWP) working fluids in low-temperature environment are studied. The thermodynamic and emission characteristic models of air source heat pump are developed and optimized, and further compared with traditional heating solutions when used in five different typical cities throughout the world. The results indicate among the selected working fluids, R152a achieves the highest COP of 3.91 among all of the selected low GWP working fluids. When the ambient temperature is 0°C, the maximum COP of the EVI system is 2.51 when CO2 is adopted, and the corresponding optimal discharge pressure and intermediate pressure are 10.57 MPa and 3.83 MPa, respectively. By exploring the changes of HSPF in five typical cities, the HSPF of the EVI system using CO2 is the most significant, which is 17.13%–26.69% higher than the BASE system. The most significant reduction of LCCP in EVI system using CO2 is 15.34%–26.66% compared with BASE system. For SO2 and NOX, the EVI system using R152a has a better emission reduction effect, which is 3.73%–64.73% and 3.72%–66.04% lower than the other solutions, respectively. This study can provide a theoretical reference for the application of low GWP heat pumps with EVI technology. |
| first_indexed | 2024-03-11T10:24:47Z |
| format | Article |
| id | doaj.art-8a477d02799c4db9b31f9f86b9c53d98 |
| institution | Directory Open Access Journal |
| issn | 2296-598X |
| language | English |
| last_indexed | 2024-03-11T10:24:47Z |
| publishDate | 2023-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Energy Research |
| spelling | doaj.art-8a477d02799c4db9b31f9f86b9c53d982023-11-15T18:40:59ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2023-11-011110.3389/fenrg.2023.12978661297866Energy and emission performance of enhanced vapor injection air source heat pump system using low global warming potential refrigerants in different climate regionsLibiao Zhang0Wuhui Jing1Qilong Wang2Jianing Zhang3Peifang Yang4Zhejiang King Co., Ltd., Shangyu, ChinaZhejiang King Co., Ltd., Shangyu, ChinaTianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, Tianjin, ChinaTianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, Tianjin, ChinaTianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, Tianjin, ChinaIn order to meet the space heating requirement of residential buildings in low-temperature areas, the performance of the enhanced vapor injection (EVI) air source heat pump (ASHP) system and single-stage compression heat pump system (BASE) using low global warming potential (GWP) working fluids in low-temperature environment are studied. The thermodynamic and emission characteristic models of air source heat pump are developed and optimized, and further compared with traditional heating solutions when used in five different typical cities throughout the world. The results indicate among the selected working fluids, R152a achieves the highest COP of 3.91 among all of the selected low GWP working fluids. When the ambient temperature is 0°C, the maximum COP of the EVI system is 2.51 when CO2 is adopted, and the corresponding optimal discharge pressure and intermediate pressure are 10.57 MPa and 3.83 MPa, respectively. By exploring the changes of HSPF in five typical cities, the HSPF of the EVI system using CO2 is the most significant, which is 17.13%–26.69% higher than the BASE system. The most significant reduction of LCCP in EVI system using CO2 is 15.34%–26.66% compared with BASE system. For SO2 and NOX, the EVI system using R152a has a better emission reduction effect, which is 3.73%–64.73% and 3.72%–66.04% lower than the other solutions, respectively. This study can provide a theoretical reference for the application of low GWP heat pumps with EVI technology.https://www.frontiersin.org/articles/10.3389/fenrg.2023.1297866/fullenhanced vapor injectionair source heat pumplow global warming potentialheating seasonal performance factorcarbon and pollutant emissions |
| spellingShingle | Libiao Zhang Wuhui Jing Qilong Wang Jianing Zhang Peifang Yang Energy and emission performance of enhanced vapor injection air source heat pump system using low global warming potential refrigerants in different climate regions Frontiers in Energy Research enhanced vapor injection air source heat pump low global warming potential heating seasonal performance factor carbon and pollutant emissions |
| title | Energy and emission performance of enhanced vapor injection air source heat pump system using low global warming potential refrigerants in different climate regions |
| title_full | Energy and emission performance of enhanced vapor injection air source heat pump system using low global warming potential refrigerants in different climate regions |
| title_fullStr | Energy and emission performance of enhanced vapor injection air source heat pump system using low global warming potential refrigerants in different climate regions |
| title_full_unstemmed | Energy and emission performance of enhanced vapor injection air source heat pump system using low global warming potential refrigerants in different climate regions |
| title_short | Energy and emission performance of enhanced vapor injection air source heat pump system using low global warming potential refrigerants in different climate regions |
| title_sort | energy and emission performance of enhanced vapor injection air source heat pump system using low global warming potential refrigerants in different climate regions |
| topic | enhanced vapor injection air source heat pump low global warming potential heating seasonal performance factor carbon and pollutant emissions |
| url | https://www.frontiersin.org/articles/10.3389/fenrg.2023.1297866/full |
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