Experimental research on the heating performance of a single cylinder refrigerant injection rotary compressor heat pump with flash tank
Abstract A single cylinder rotary compressor was applied in the refrigerant injection air-source heat pump to improve the heating performance in cold regions. In this study, the performance of an R410A single cylinder rotary compressor vapor injection (SCRCVI) system was measured and analyzed by var...
Ausführliche Beschreibung
Autor*in: |
Sun, JinFei [verfasserIn] Zhu, DongSheng [verfasserIn] Yin, YingDe [verfasserIn] Li, XiuZhen [verfasserIn] |
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E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2018 |
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Übergeordnetes Werk: |
Enthalten in: Science in China - Heidelberg : Springer, 1997, 61(2018), 12 vom: 11. Mai, Seite 1814-1823 |
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Übergeordnetes Werk: |
volume:61 ; year:2018 ; number:12 ; day:11 ; month:05 ; pages:1814-1823 |
Links: |
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DOI / URN: |
10.1007/s11431-017-9237-6 |
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Katalog-ID: |
SPR019292384 |
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520 | |a Abstract A single cylinder rotary compressor was applied in the refrigerant injection air-source heat pump to improve the heating performance in cold regions. In this study, the performance of an R410A single cylinder rotary compressor vapor injection (SCRCVI) system was measured and analyzed by varying the compressor frequency f and injection pressure Pinj at the ambient temperature Tod=–10°C.The experimental results indicated that an optimum injection pressure to gain the maximum $ COP_{h} $ (coefficient of performance) existed in the SCRCVI cycle. However, the maximum $ COP_{h} $ of the SCRCVI system decreased as the increase of the frequency, and the maximum $ COP_{h} $ was even lower than that of the CSVC system at high compressor frequency. Therefore, in view of the energy saving and emission reduction, the SCRCVI system should be switched to single stage compression system when the heating capacity demand could be satisfied at high compressor frequency f. Compared to the conventional single-stage vapor compression (CSVC) system, refrigerant injection could enhance the heating capacities and $ COP_{h} $ by 28.2% and 7.91%, respectively. The average total mass flow rate of the SCRCVI system was 24.68% higher than that of the CSVC system. As the SCRCVI system worked at the optimum injection pressure, the variation trends of the different system parameters were investigated in detail. These trends were reliably used to optimize the refrigerant injection system design and the control strategy. The parameter of (Pinj–Ps) could be adopted as the signals to control the opening of the upper stage electronic expansion valve EEV1. | ||
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650 | 4 | |a refrigerant injection |7 (dpeaa)DE-He213 | |
650 | 4 | |a DC (direct current) inverter |7 (dpeaa)DE-He213 | |
650 | 4 | |a heat pump |7 (dpeaa)DE-He213 | |
650 | 4 | |a heating performance |7 (dpeaa)DE-He213 | |
650 | 4 | |a injection pressure |7 (dpeaa)DE-He213 | |
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700 | 1 | |a Li, XiuZhen |e verfasserin |4 aut | |
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10.1007/s11431-017-9237-6 doi (DE-627)SPR019292384 (SPR)s11431-017-9237-6-e DE-627 ger DE-627 rakwb eng 600 ASE 600 ASE 50.00 bkl Sun, JinFei verfasserin aut Experimental research on the heating performance of a single cylinder refrigerant injection rotary compressor heat pump with flash tank 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract A single cylinder rotary compressor was applied in the refrigerant injection air-source heat pump to improve the heating performance in cold regions. In this study, the performance of an R410A single cylinder rotary compressor vapor injection (SCRCVI) system was measured and analyzed by varying the compressor frequency f and injection pressure Pinj at the ambient temperature Tod=–10°C.The experimental results indicated that an optimum injection pressure to gain the maximum $ COP_{h} $ (coefficient of performance) existed in the SCRCVI cycle. However, the maximum $ COP_{h} $ of the SCRCVI system decreased as the increase of the frequency, and the maximum $ COP_{h} $ was even lower than that of the CSVC system at high compressor frequency. Therefore, in view of the energy saving and emission reduction, the SCRCVI system should be switched to single stage compression system when the heating capacity demand could be satisfied at high compressor frequency f. Compared to the conventional single-stage vapor compression (CSVC) system, refrigerant injection could enhance the heating capacities and $ COP_{h} $ by 28.2% and 7.91%, respectively. The average total mass flow rate of the SCRCVI system was 24.68% higher than that of the CSVC system. As the SCRCVI system worked at the optimum injection pressure, the variation trends of the different system parameters were investigated in detail. These trends were reliably used to optimize the refrigerant injection system design and the control strategy. The parameter of (Pinj–Ps) could be adopted as the signals to control the opening of the upper stage electronic expansion valve EEV1. rotary compressor (dpeaa)DE-He213 refrigerant injection (dpeaa)DE-He213 DC (direct current) inverter (dpeaa)DE-He213 heat pump (dpeaa)DE-He213 heating performance (dpeaa)DE-He213 injection pressure (dpeaa)DE-He213 Zhu, DongSheng verfasserin aut Yin, YingDe verfasserin aut Li, XiuZhen verfasserin aut Enthalten in Science in China Heidelberg : Springer, 1997 61(2018), 12 vom: 11. Mai, Seite 1814-1823 (DE-627)385614756 (DE-600)2142897-9 1862-281X nnns volume:61 year:2018 number:12 day:11 month:05 pages:1814-1823 https://dx.doi.org/10.1007/s11431-017-9237-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 50.00 ASE AR 61 2018 12 11 05 1814-1823 |
spelling |
10.1007/s11431-017-9237-6 doi (DE-627)SPR019292384 (SPR)s11431-017-9237-6-e DE-627 ger DE-627 rakwb eng 600 ASE 600 ASE 50.00 bkl Sun, JinFei verfasserin aut Experimental research on the heating performance of a single cylinder refrigerant injection rotary compressor heat pump with flash tank 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract A single cylinder rotary compressor was applied in the refrigerant injection air-source heat pump to improve the heating performance in cold regions. In this study, the performance of an R410A single cylinder rotary compressor vapor injection (SCRCVI) system was measured and analyzed by varying the compressor frequency f and injection pressure Pinj at the ambient temperature Tod=–10°C.The experimental results indicated that an optimum injection pressure to gain the maximum $ COP_{h} $ (coefficient of performance) existed in the SCRCVI cycle. However, the maximum $ COP_{h} $ of the SCRCVI system decreased as the increase of the frequency, and the maximum $ COP_{h} $ was even lower than that of the CSVC system at high compressor frequency. Therefore, in view of the energy saving and emission reduction, the SCRCVI system should be switched to single stage compression system when the heating capacity demand could be satisfied at high compressor frequency f. Compared to the conventional single-stage vapor compression (CSVC) system, refrigerant injection could enhance the heating capacities and $ COP_{h} $ by 28.2% and 7.91%, respectively. The average total mass flow rate of the SCRCVI system was 24.68% higher than that of the CSVC system. As the SCRCVI system worked at the optimum injection pressure, the variation trends of the different system parameters were investigated in detail. These trends were reliably used to optimize the refrigerant injection system design and the control strategy. The parameter of (Pinj–Ps) could be adopted as the signals to control the opening of the upper stage electronic expansion valve EEV1. rotary compressor (dpeaa)DE-He213 refrigerant injection (dpeaa)DE-He213 DC (direct current) inverter (dpeaa)DE-He213 heat pump (dpeaa)DE-He213 heating performance (dpeaa)DE-He213 injection pressure (dpeaa)DE-He213 Zhu, DongSheng verfasserin aut Yin, YingDe verfasserin aut Li, XiuZhen verfasserin aut Enthalten in Science in China Heidelberg : Springer, 1997 61(2018), 12 vom: 11. Mai, Seite 1814-1823 (DE-627)385614756 (DE-600)2142897-9 1862-281X nnns volume:61 year:2018 number:12 day:11 month:05 pages:1814-1823 https://dx.doi.org/10.1007/s11431-017-9237-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 50.00 ASE AR 61 2018 12 11 05 1814-1823 |
allfields_unstemmed |
10.1007/s11431-017-9237-6 doi (DE-627)SPR019292384 (SPR)s11431-017-9237-6-e DE-627 ger DE-627 rakwb eng 600 ASE 600 ASE 50.00 bkl Sun, JinFei verfasserin aut Experimental research on the heating performance of a single cylinder refrigerant injection rotary compressor heat pump with flash tank 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract A single cylinder rotary compressor was applied in the refrigerant injection air-source heat pump to improve the heating performance in cold regions. In this study, the performance of an R410A single cylinder rotary compressor vapor injection (SCRCVI) system was measured and analyzed by varying the compressor frequency f and injection pressure Pinj at the ambient temperature Tod=–10°C.The experimental results indicated that an optimum injection pressure to gain the maximum $ COP_{h} $ (coefficient of performance) existed in the SCRCVI cycle. However, the maximum $ COP_{h} $ of the SCRCVI system decreased as the increase of the frequency, and the maximum $ COP_{h} $ was even lower than that of the CSVC system at high compressor frequency. Therefore, in view of the energy saving and emission reduction, the SCRCVI system should be switched to single stage compression system when the heating capacity demand could be satisfied at high compressor frequency f. Compared to the conventional single-stage vapor compression (CSVC) system, refrigerant injection could enhance the heating capacities and $ COP_{h} $ by 28.2% and 7.91%, respectively. The average total mass flow rate of the SCRCVI system was 24.68% higher than that of the CSVC system. As the SCRCVI system worked at the optimum injection pressure, the variation trends of the different system parameters were investigated in detail. These trends were reliably used to optimize the refrigerant injection system design and the control strategy. The parameter of (Pinj–Ps) could be adopted as the signals to control the opening of the upper stage electronic expansion valve EEV1. rotary compressor (dpeaa)DE-He213 refrigerant injection (dpeaa)DE-He213 DC (direct current) inverter (dpeaa)DE-He213 heat pump (dpeaa)DE-He213 heating performance (dpeaa)DE-He213 injection pressure (dpeaa)DE-He213 Zhu, DongSheng verfasserin aut Yin, YingDe verfasserin aut Li, XiuZhen verfasserin aut Enthalten in Science in China Heidelberg : Springer, 1997 61(2018), 12 vom: 11. Mai, Seite 1814-1823 (DE-627)385614756 (DE-600)2142897-9 1862-281X nnns volume:61 year:2018 number:12 day:11 month:05 pages:1814-1823 https://dx.doi.org/10.1007/s11431-017-9237-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 50.00 ASE AR 61 2018 12 11 05 1814-1823 |
allfieldsGer |
10.1007/s11431-017-9237-6 doi (DE-627)SPR019292384 (SPR)s11431-017-9237-6-e DE-627 ger DE-627 rakwb eng 600 ASE 600 ASE 50.00 bkl Sun, JinFei verfasserin aut Experimental research on the heating performance of a single cylinder refrigerant injection rotary compressor heat pump with flash tank 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract A single cylinder rotary compressor was applied in the refrigerant injection air-source heat pump to improve the heating performance in cold regions. In this study, the performance of an R410A single cylinder rotary compressor vapor injection (SCRCVI) system was measured and analyzed by varying the compressor frequency f and injection pressure Pinj at the ambient temperature Tod=–10°C.The experimental results indicated that an optimum injection pressure to gain the maximum $ COP_{h} $ (coefficient of performance) existed in the SCRCVI cycle. However, the maximum $ COP_{h} $ of the SCRCVI system decreased as the increase of the frequency, and the maximum $ COP_{h} $ was even lower than that of the CSVC system at high compressor frequency. Therefore, in view of the energy saving and emission reduction, the SCRCVI system should be switched to single stage compression system when the heating capacity demand could be satisfied at high compressor frequency f. Compared to the conventional single-stage vapor compression (CSVC) system, refrigerant injection could enhance the heating capacities and $ COP_{h} $ by 28.2% and 7.91%, respectively. The average total mass flow rate of the SCRCVI system was 24.68% higher than that of the CSVC system. As the SCRCVI system worked at the optimum injection pressure, the variation trends of the different system parameters were investigated in detail. These trends were reliably used to optimize the refrigerant injection system design and the control strategy. The parameter of (Pinj–Ps) could be adopted as the signals to control the opening of the upper stage electronic expansion valve EEV1. rotary compressor (dpeaa)DE-He213 refrigerant injection (dpeaa)DE-He213 DC (direct current) inverter (dpeaa)DE-He213 heat pump (dpeaa)DE-He213 heating performance (dpeaa)DE-He213 injection pressure (dpeaa)DE-He213 Zhu, DongSheng verfasserin aut Yin, YingDe verfasserin aut Li, XiuZhen verfasserin aut Enthalten in Science in China Heidelberg : Springer, 1997 61(2018), 12 vom: 11. Mai, Seite 1814-1823 (DE-627)385614756 (DE-600)2142897-9 1862-281X nnns volume:61 year:2018 number:12 day:11 month:05 pages:1814-1823 https://dx.doi.org/10.1007/s11431-017-9237-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 50.00 ASE AR 61 2018 12 11 05 1814-1823 |
allfieldsSound |
10.1007/s11431-017-9237-6 doi (DE-627)SPR019292384 (SPR)s11431-017-9237-6-e DE-627 ger DE-627 rakwb eng 600 ASE 600 ASE 50.00 bkl Sun, JinFei verfasserin aut Experimental research on the heating performance of a single cylinder refrigerant injection rotary compressor heat pump with flash tank 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract A single cylinder rotary compressor was applied in the refrigerant injection air-source heat pump to improve the heating performance in cold regions. In this study, the performance of an R410A single cylinder rotary compressor vapor injection (SCRCVI) system was measured and analyzed by varying the compressor frequency f and injection pressure Pinj at the ambient temperature Tod=–10°C.The experimental results indicated that an optimum injection pressure to gain the maximum $ COP_{h} $ (coefficient of performance) existed in the SCRCVI cycle. However, the maximum $ COP_{h} $ of the SCRCVI system decreased as the increase of the frequency, and the maximum $ COP_{h} $ was even lower than that of the CSVC system at high compressor frequency. Therefore, in view of the energy saving and emission reduction, the SCRCVI system should be switched to single stage compression system when the heating capacity demand could be satisfied at high compressor frequency f. Compared to the conventional single-stage vapor compression (CSVC) system, refrigerant injection could enhance the heating capacities and $ COP_{h} $ by 28.2% and 7.91%, respectively. The average total mass flow rate of the SCRCVI system was 24.68% higher than that of the CSVC system. As the SCRCVI system worked at the optimum injection pressure, the variation trends of the different system parameters were investigated in detail. These trends were reliably used to optimize the refrigerant injection system design and the control strategy. The parameter of (Pinj–Ps) could be adopted as the signals to control the opening of the upper stage electronic expansion valve EEV1. rotary compressor (dpeaa)DE-He213 refrigerant injection (dpeaa)DE-He213 DC (direct current) inverter (dpeaa)DE-He213 heat pump (dpeaa)DE-He213 heating performance (dpeaa)DE-He213 injection pressure (dpeaa)DE-He213 Zhu, DongSheng verfasserin aut Yin, YingDe verfasserin aut Li, XiuZhen verfasserin aut Enthalten in Science in China Heidelberg : Springer, 1997 61(2018), 12 vom: 11. Mai, Seite 1814-1823 (DE-627)385614756 (DE-600)2142897-9 1862-281X nnns volume:61 year:2018 number:12 day:11 month:05 pages:1814-1823 https://dx.doi.org/10.1007/s11431-017-9237-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 50.00 ASE AR 61 2018 12 11 05 1814-1823 |
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In this study, the performance of an R410A single cylinder rotary compressor vapor injection (SCRCVI) system was measured and analyzed by varying the compressor frequency f and injection pressure Pinj at the ambient temperature Tod=–10°C.The experimental results indicated that an optimum injection pressure to gain the maximum $ COP_{h} $ (coefficient of performance) existed in the SCRCVI cycle. However, the maximum $ COP_{h} $ of the SCRCVI system decreased as the increase of the frequency, and the maximum $ COP_{h} $ was even lower than that of the CSVC system at high compressor frequency. Therefore, in view of the energy saving and emission reduction, the SCRCVI system should be switched to single stage compression system when the heating capacity demand could be satisfied at high compressor frequency f. Compared to the conventional single-stage vapor compression (CSVC) system, refrigerant injection could enhance the heating capacities and $ COP_{h} $ by 28.2% and 7.91%, respectively. The average total mass flow rate of the SCRCVI system was 24.68% higher than that of the CSVC system. As the SCRCVI system worked at the optimum injection pressure, the variation trends of the different system parameters were investigated in detail. These trends were reliably used to optimize the refrigerant injection system design and the control strategy. 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Sun, JinFei |
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Sun, JinFei ddc 600 bkl 50.00 misc rotary compressor misc refrigerant injection misc DC (direct current) inverter misc heat pump misc heating performance misc injection pressure Experimental research on the heating performance of a single cylinder refrigerant injection rotary compressor heat pump with flash tank |
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600 ASE 50.00 bkl Experimental research on the heating performance of a single cylinder refrigerant injection rotary compressor heat pump with flash tank rotary compressor (dpeaa)DE-He213 refrigerant injection (dpeaa)DE-He213 DC (direct current) inverter (dpeaa)DE-He213 heat pump (dpeaa)DE-He213 heating performance (dpeaa)DE-He213 injection pressure (dpeaa)DE-He213 |
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ddc 600 bkl 50.00 misc rotary compressor misc refrigerant injection misc DC (direct current) inverter misc heat pump misc heating performance misc injection pressure |
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experimental research on the heating performance of a single cylinder refrigerant injection rotary compressor heat pump with flash tank |
title_auth |
Experimental research on the heating performance of a single cylinder refrigerant injection rotary compressor heat pump with flash tank |
abstract |
Abstract A single cylinder rotary compressor was applied in the refrigerant injection air-source heat pump to improve the heating performance in cold regions. In this study, the performance of an R410A single cylinder rotary compressor vapor injection (SCRCVI) system was measured and analyzed by varying the compressor frequency f and injection pressure Pinj at the ambient temperature Tod=–10°C.The experimental results indicated that an optimum injection pressure to gain the maximum $ COP_{h} $ (coefficient of performance) existed in the SCRCVI cycle. However, the maximum $ COP_{h} $ of the SCRCVI system decreased as the increase of the frequency, and the maximum $ COP_{h} $ was even lower than that of the CSVC system at high compressor frequency. Therefore, in view of the energy saving and emission reduction, the SCRCVI system should be switched to single stage compression system when the heating capacity demand could be satisfied at high compressor frequency f. Compared to the conventional single-stage vapor compression (CSVC) system, refrigerant injection could enhance the heating capacities and $ COP_{h} $ by 28.2% and 7.91%, respectively. The average total mass flow rate of the SCRCVI system was 24.68% higher than that of the CSVC system. As the SCRCVI system worked at the optimum injection pressure, the variation trends of the different system parameters were investigated in detail. These trends were reliably used to optimize the refrigerant injection system design and the control strategy. The parameter of (Pinj–Ps) could be adopted as the signals to control the opening of the upper stage electronic expansion valve EEV1. |
abstractGer |
Abstract A single cylinder rotary compressor was applied in the refrigerant injection air-source heat pump to improve the heating performance in cold regions. In this study, the performance of an R410A single cylinder rotary compressor vapor injection (SCRCVI) system was measured and analyzed by varying the compressor frequency f and injection pressure Pinj at the ambient temperature Tod=–10°C.The experimental results indicated that an optimum injection pressure to gain the maximum $ COP_{h} $ (coefficient of performance) existed in the SCRCVI cycle. However, the maximum $ COP_{h} $ of the SCRCVI system decreased as the increase of the frequency, and the maximum $ COP_{h} $ was even lower than that of the CSVC system at high compressor frequency. Therefore, in view of the energy saving and emission reduction, the SCRCVI system should be switched to single stage compression system when the heating capacity demand could be satisfied at high compressor frequency f. Compared to the conventional single-stage vapor compression (CSVC) system, refrigerant injection could enhance the heating capacities and $ COP_{h} $ by 28.2% and 7.91%, respectively. The average total mass flow rate of the SCRCVI system was 24.68% higher than that of the CSVC system. As the SCRCVI system worked at the optimum injection pressure, the variation trends of the different system parameters were investigated in detail. These trends were reliably used to optimize the refrigerant injection system design and the control strategy. The parameter of (Pinj–Ps) could be adopted as the signals to control the opening of the upper stage electronic expansion valve EEV1. |
abstract_unstemmed |
Abstract A single cylinder rotary compressor was applied in the refrigerant injection air-source heat pump to improve the heating performance in cold regions. In this study, the performance of an R410A single cylinder rotary compressor vapor injection (SCRCVI) system was measured and analyzed by varying the compressor frequency f and injection pressure Pinj at the ambient temperature Tod=–10°C.The experimental results indicated that an optimum injection pressure to gain the maximum $ COP_{h} $ (coefficient of performance) existed in the SCRCVI cycle. However, the maximum $ COP_{h} $ of the SCRCVI system decreased as the increase of the frequency, and the maximum $ COP_{h} $ was even lower than that of the CSVC system at high compressor frequency. Therefore, in view of the energy saving and emission reduction, the SCRCVI system should be switched to single stage compression system when the heating capacity demand could be satisfied at high compressor frequency f. Compared to the conventional single-stage vapor compression (CSVC) system, refrigerant injection could enhance the heating capacities and $ COP_{h} $ by 28.2% and 7.91%, respectively. The average total mass flow rate of the SCRCVI system was 24.68% higher than that of the CSVC system. As the SCRCVI system worked at the optimum injection pressure, the variation trends of the different system parameters were investigated in detail. These trends were reliably used to optimize the refrigerant injection system design and the control strategy. The parameter of (Pinj–Ps) could be adopted as the signals to control the opening of the upper stage electronic expansion valve EEV1. |
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Experimental research on the heating performance of a single cylinder refrigerant injection rotary compressor heat pump with flash tank |
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https://dx.doi.org/10.1007/s11431-017-9237-6 |
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Compared to the conventional single-stage vapor compression (CSVC) system, refrigerant injection could enhance the heating capacities and $ COP_{h} $ by 28.2% and 7.91%, respectively. The average total mass flow rate of the SCRCVI system was 24.68% higher than that of the CSVC system. As the SCRCVI system worked at the optimum injection pressure, the variation trends of the different system parameters were investigated in detail. These trends were reliably used to optimize the refrigerant injection system design and the control strategy. 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