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

Gespeichert in:

Autor*in:	Sun, JinFei [verfasserIn] Zhu, DongSheng [verfasserIn] Yin, YingDe [verfasserIn] Li, XiuZhen [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2018

Schlagwörter:	rotary compressor refrigerant injection DC (direct current) inverter heat pump heating performance injection pressure

Übergeordnetes Werk:	Enthalten in: Science in China - Heidelberg : Springer, 1997, 61(2018), 12 vom: 11. Mai, Seite 1814-1823
Übergeordnetes Werk:	volume:61 ; year:2018 ; number:12 ; day:11 ; month:05 ; pages:1814-1823

Links:	Volltext

DOI / URN:	10.1007/s11431-017-9237-6

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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allfields	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
language	English
source	Enthalten in Science in China 61(2018), 12 vom: 11. Mai, Seite 1814-1823 volume:61 year:2018 number:12 day:11 month:05 pages:1814-1823
sourceStr	Enthalten in Science in China 61(2018), 12 vom: 11. Mai, Seite 1814-1823 volume:61 year:2018 number:12 day:11 month:05 pages:1814-1823
format_phy_str_mv	Article
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topic_facet	rotary compressor refrigerant injection DC (direct current) inverter heat pump heating performance injection pressure
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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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author	Sun, JinFei
spellingShingle	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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topic_title	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
topic	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
topic_unstemmed	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
topic_browse	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
format_facet	Elektronische Aufsätze Aufsätze Elektronische Ressource
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title	Experimental research on the heating performance of a single cylinder refrigerant injection rotary compressor heat pump with flash tank
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title_full	Experimental research on the heating performance of a single cylinder refrigerant injection rotary compressor heat pump with flash tank
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author_browse	Sun, JinFei Zhu, DongSheng Yin, YingDe Li, XiuZhen
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author2-role	verfasserin
title_sort	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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container_issue	12
title_short	Experimental research on the heating performance of a single cylinder refrigerant injection rotary compressor heat pump with flash tank
url	https://dx.doi.org/10.1007/s11431-017-9237-6
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author2	Zhu, DongSheng Yin, YingDe Li, XiuZhen
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doi_str	10.1007/s11431-017-9237-6
up_date	2024-07-04T00:59:22.738Z
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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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Experimental research on the heating performance of a single cylinder refrigerant injection rotary compressor heat pump with flash tank

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