Experimental Investigation of Electrospray Cooling Performance Using the Mixture of Ethanol and R141b

Abstract The electrospray (ES) cooling technique, which is a combination of spray cooling and high-voltage electrostatic technology, has attracted considerable interest because of its simple unit structure and low power consumption. To overcome the low flow rate and high boiling point problems of cu...
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Autor*in:	Wang, Junfeng [verfasserIn] Zhang, Yan Tian, Jiameng Xu, Haojie Zuo, Lei Wang, Dongbao Zuo, Xiaohui

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2022

Schlagwörter:	Electrospray cooling Heat transfer Ethanol/R141b mixture Electronic cooling

Anmerkung:	© The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022

Übergeordnetes Werk:	Enthalten in: International journal of thermophysics - New York, NY : Springer Science + Business Media B.V., 1980, 43(2022), 6 vom: 29. März
Übergeordnetes Werk:	volume:43 ; year:2022 ; number:6 ; day:29 ; month:03

Links:	Volltext

DOI / URN:	10.1007/s10765-022-02993-3

Katalog-ID:	SPR04661687X

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520			\|a Abstract The electrospray (ES) cooling technique, which is a combination of spray cooling and high-voltage electrostatic technology, has attracted considerable interest because of its simple unit structure and low power consumption. To overcome the low flow rate and high boiling point problems of current working fluids, a mixture of R141b and ethanol was used as the working fluid to experimentally investigate the break-up modes at a high flow rate. Furthermore, the effects of break-up modes and ethanol concentration on spray characteristics, cooling performance, and impingement characteristics were examined. The experimental results indicated that ES at a high flow rate exhibited four break-up modes: dropwise, varicose, whipping, and ramified. As the spray mode transitioned from the dropwise to the ramified mode, the droplet size decreased, and the droplet splash phenomenon on the hot surface was suppressed. The cooling performance was considerably enhanced with the evolution of the break-up mode, and the critical heat flux (CHF) was increased by 27.3 % when the break-up mode was transformed into the ramified mode from the dropwise mode. Under certain conditions, an ES cooling efficiency of 92.6 % was achieved. Furthermore, the volume fraction of ethanol (corresponding to the best cooling performance) increased with the wall temperature. In this study, considering the actual requirements of the chip for the cooling capacity, the optimal volume fraction of ethanol in the whole temperature region was determined to be 30 %. These findings can provide theoretical guidance for thermal management of high-power electronic devices.
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700	1		\|a Zuo, Xiaohui \|4 aut
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allfields	10.1007/s10765-022-02993-3 doi (DE-627)SPR04661687X (SPR)s10765-022-02993-3-e DE-627 ger DE-627 rakwb eng Wang, Junfeng verfasserin aut Experimental Investigation of Electrospray Cooling Performance Using the Mixture of Ethanol and R141b 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022 Abstract The electrospray (ES) cooling technique, which is a combination of spray cooling and high-voltage electrostatic technology, has attracted considerable interest because of its simple unit structure and low power consumption. To overcome the low flow rate and high boiling point problems of current working fluids, a mixture of R141b and ethanol was used as the working fluid to experimentally investigate the break-up modes at a high flow rate. Furthermore, the effects of break-up modes and ethanol concentration on spray characteristics, cooling performance, and impingement characteristics were examined. The experimental results indicated that ES at a high flow rate exhibited four break-up modes: dropwise, varicose, whipping, and ramified. As the spray mode transitioned from the dropwise to the ramified mode, the droplet size decreased, and the droplet splash phenomenon on the hot surface was suppressed. The cooling performance was considerably enhanced with the evolution of the break-up mode, and the critical heat flux (CHF) was increased by 27.3 % when the break-up mode was transformed into the ramified mode from the dropwise mode. Under certain conditions, an ES cooling efficiency of 92.6 % was achieved. Furthermore, the volume fraction of ethanol (corresponding to the best cooling performance) increased with the wall temperature. In this study, considering the actual requirements of the chip for the cooling capacity, the optimal volume fraction of ethanol in the whole temperature region was determined to be 30 %. These findings can provide theoretical guidance for thermal management of high-power electronic devices. Electrospray cooling (dpeaa)DE-He213 Heat transfer (dpeaa)DE-He213 Ethanol/R141b mixture (dpeaa)DE-He213 Electronic cooling (dpeaa)DE-He213 Zhang, Yan aut Tian, Jiameng aut Xu, Haojie aut Zuo, Lei aut Wang, Dongbao aut Zuo, Xiaohui aut Enthalten in International journal of thermophysics New York, NY : Springer Science + Business Media B.V., 1980 43(2022), 6 vom: 29. März (DE-627)319584321 (DE-600)2016169-4 1572-9567 nnns volume:43 year:2022 number:6 day:29 month:03 https://dx.doi.org/10.1007/s10765-022-02993-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 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_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 43 2022 6 29 03
spelling	10.1007/s10765-022-02993-3 doi (DE-627)SPR04661687X (SPR)s10765-022-02993-3-e DE-627 ger DE-627 rakwb eng Wang, Junfeng verfasserin aut Experimental Investigation of Electrospray Cooling Performance Using the Mixture of Ethanol and R141b 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022 Abstract The electrospray (ES) cooling technique, which is a combination of spray cooling and high-voltage electrostatic technology, has attracted considerable interest because of its simple unit structure and low power consumption. To overcome the low flow rate and high boiling point problems of current working fluids, a mixture of R141b and ethanol was used as the working fluid to experimentally investigate the break-up modes at a high flow rate. Furthermore, the effects of break-up modes and ethanol concentration on spray characteristics, cooling performance, and impingement characteristics were examined. The experimental results indicated that ES at a high flow rate exhibited four break-up modes: dropwise, varicose, whipping, and ramified. As the spray mode transitioned from the dropwise to the ramified mode, the droplet size decreased, and the droplet splash phenomenon on the hot surface was suppressed. The cooling performance was considerably enhanced with the evolution of the break-up mode, and the critical heat flux (CHF) was increased by 27.3 % when the break-up mode was transformed into the ramified mode from the dropwise mode. Under certain conditions, an ES cooling efficiency of 92.6 % was achieved. Furthermore, the volume fraction of ethanol (corresponding to the best cooling performance) increased with the wall temperature. In this study, considering the actual requirements of the chip for the cooling capacity, the optimal volume fraction of ethanol in the whole temperature region was determined to be 30 %. These findings can provide theoretical guidance for thermal management of high-power electronic devices. Electrospray cooling (dpeaa)DE-He213 Heat transfer (dpeaa)DE-He213 Ethanol/R141b mixture (dpeaa)DE-He213 Electronic cooling (dpeaa)DE-He213 Zhang, Yan aut Tian, Jiameng aut Xu, Haojie aut Zuo, Lei aut Wang, Dongbao aut Zuo, Xiaohui aut Enthalten in International journal of thermophysics New York, NY : Springer Science + Business Media B.V., 1980 43(2022), 6 vom: 29. März (DE-627)319584321 (DE-600)2016169-4 1572-9567 nnns volume:43 year:2022 number:6 day:29 month:03 https://dx.doi.org/10.1007/s10765-022-02993-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 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_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 43 2022 6 29 03
allfields_unstemmed	10.1007/s10765-022-02993-3 doi (DE-627)SPR04661687X (SPR)s10765-022-02993-3-e DE-627 ger DE-627 rakwb eng Wang, Junfeng verfasserin aut Experimental Investigation of Electrospray Cooling Performance Using the Mixture of Ethanol and R141b 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022 Abstract The electrospray (ES) cooling technique, which is a combination of spray cooling and high-voltage electrostatic technology, has attracted considerable interest because of its simple unit structure and low power consumption. To overcome the low flow rate and high boiling point problems of current working fluids, a mixture of R141b and ethanol was used as the working fluid to experimentally investigate the break-up modes at a high flow rate. Furthermore, the effects of break-up modes and ethanol concentration on spray characteristics, cooling performance, and impingement characteristics were examined. The experimental results indicated that ES at a high flow rate exhibited four break-up modes: dropwise, varicose, whipping, and ramified. As the spray mode transitioned from the dropwise to the ramified mode, the droplet size decreased, and the droplet splash phenomenon on the hot surface was suppressed. The cooling performance was considerably enhanced with the evolution of the break-up mode, and the critical heat flux (CHF) was increased by 27.3 % when the break-up mode was transformed into the ramified mode from the dropwise mode. Under certain conditions, an ES cooling efficiency of 92.6 % was achieved. Furthermore, the volume fraction of ethanol (corresponding to the best cooling performance) increased with the wall temperature. In this study, considering the actual requirements of the chip for the cooling capacity, the optimal volume fraction of ethanol in the whole temperature region was determined to be 30 %. These findings can provide theoretical guidance for thermal management of high-power electronic devices. Electrospray cooling (dpeaa)DE-He213 Heat transfer (dpeaa)DE-He213 Ethanol/R141b mixture (dpeaa)DE-He213 Electronic cooling (dpeaa)DE-He213 Zhang, Yan aut Tian, Jiameng aut Xu, Haojie aut Zuo, Lei aut Wang, Dongbao aut Zuo, Xiaohui aut Enthalten in International journal of thermophysics New York, NY : Springer Science + Business Media B.V., 1980 43(2022), 6 vom: 29. März (DE-627)319584321 (DE-600)2016169-4 1572-9567 nnns volume:43 year:2022 number:6 day:29 month:03 https://dx.doi.org/10.1007/s10765-022-02993-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 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_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 43 2022 6 29 03
allfieldsGer	10.1007/s10765-022-02993-3 doi (DE-627)SPR04661687X (SPR)s10765-022-02993-3-e DE-627 ger DE-627 rakwb eng Wang, Junfeng verfasserin aut Experimental Investigation of Electrospray Cooling Performance Using the Mixture of Ethanol and R141b 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022 Abstract The electrospray (ES) cooling technique, which is a combination of spray cooling and high-voltage electrostatic technology, has attracted considerable interest because of its simple unit structure and low power consumption. To overcome the low flow rate and high boiling point problems of current working fluids, a mixture of R141b and ethanol was used as the working fluid to experimentally investigate the break-up modes at a high flow rate. Furthermore, the effects of break-up modes and ethanol concentration on spray characteristics, cooling performance, and impingement characteristics were examined. The experimental results indicated that ES at a high flow rate exhibited four break-up modes: dropwise, varicose, whipping, and ramified. As the spray mode transitioned from the dropwise to the ramified mode, the droplet size decreased, and the droplet splash phenomenon on the hot surface was suppressed. The cooling performance was considerably enhanced with the evolution of the break-up mode, and the critical heat flux (CHF) was increased by 27.3 % when the break-up mode was transformed into the ramified mode from the dropwise mode. Under certain conditions, an ES cooling efficiency of 92.6 % was achieved. Furthermore, the volume fraction of ethanol (corresponding to the best cooling performance) increased with the wall temperature. In this study, considering the actual requirements of the chip for the cooling capacity, the optimal volume fraction of ethanol in the whole temperature region was determined to be 30 %. These findings can provide theoretical guidance for thermal management of high-power electronic devices. Electrospray cooling (dpeaa)DE-He213 Heat transfer (dpeaa)DE-He213 Ethanol/R141b mixture (dpeaa)DE-He213 Electronic cooling (dpeaa)DE-He213 Zhang, Yan aut Tian, Jiameng aut Xu, Haojie aut Zuo, Lei aut Wang, Dongbao aut Zuo, Xiaohui aut Enthalten in International journal of thermophysics New York, NY : Springer Science + Business Media B.V., 1980 43(2022), 6 vom: 29. März (DE-627)319584321 (DE-600)2016169-4 1572-9567 nnns volume:43 year:2022 number:6 day:29 month:03 https://dx.doi.org/10.1007/s10765-022-02993-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 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_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 43 2022 6 29 03
allfieldsSound	10.1007/s10765-022-02993-3 doi (DE-627)SPR04661687X (SPR)s10765-022-02993-3-e DE-627 ger DE-627 rakwb eng Wang, Junfeng verfasserin aut Experimental Investigation of Electrospray Cooling Performance Using the Mixture of Ethanol and R141b 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022 Abstract The electrospray (ES) cooling technique, which is a combination of spray cooling and high-voltage electrostatic technology, has attracted considerable interest because of its simple unit structure and low power consumption. To overcome the low flow rate and high boiling point problems of current working fluids, a mixture of R141b and ethanol was used as the working fluid to experimentally investigate the break-up modes at a high flow rate. Furthermore, the effects of break-up modes and ethanol concentration on spray characteristics, cooling performance, and impingement characteristics were examined. The experimental results indicated that ES at a high flow rate exhibited four break-up modes: dropwise, varicose, whipping, and ramified. As the spray mode transitioned from the dropwise to the ramified mode, the droplet size decreased, and the droplet splash phenomenon on the hot surface was suppressed. The cooling performance was considerably enhanced with the evolution of the break-up mode, and the critical heat flux (CHF) was increased by 27.3 % when the break-up mode was transformed into the ramified mode from the dropwise mode. Under certain conditions, an ES cooling efficiency of 92.6 % was achieved. Furthermore, the volume fraction of ethanol (corresponding to the best cooling performance) increased with the wall temperature. In this study, considering the actual requirements of the chip for the cooling capacity, the optimal volume fraction of ethanol in the whole temperature region was determined to be 30 %. These findings can provide theoretical guidance for thermal management of high-power electronic devices. Electrospray cooling (dpeaa)DE-He213 Heat transfer (dpeaa)DE-He213 Ethanol/R141b mixture (dpeaa)DE-He213 Electronic cooling (dpeaa)DE-He213 Zhang, Yan aut Tian, Jiameng aut Xu, Haojie aut Zuo, Lei aut Wang, Dongbao aut Zuo, Xiaohui aut Enthalten in International journal of thermophysics New York, NY : Springer Science + Business Media B.V., 1980 43(2022), 6 vom: 29. März (DE-627)319584321 (DE-600)2016169-4 1572-9567 nnns volume:43 year:2022 number:6 day:29 month:03 https://dx.doi.org/10.1007/s10765-022-02993-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 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_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 43 2022 6 29 03
language	English
source	Enthalten in International journal of thermophysics 43(2022), 6 vom: 29. März volume:43 year:2022 number:6 day:29 month:03
sourceStr	Enthalten in International journal of thermophysics 43(2022), 6 vom: 29. März volume:43 year:2022 number:6 day:29 month:03
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Electrospray cooling Heat transfer Ethanol/R141b mixture Electronic cooling
isfreeaccess_bool	false
container_title	International journal of thermophysics
authorswithroles_txt_mv	Wang, Junfeng @@aut@@ Zhang, Yan @@aut@@ Tian, Jiameng @@aut@@ Xu, Haojie @@aut@@ Zuo, Lei @@aut@@ Wang, Dongbao @@aut@@ Zuo, Xiaohui @@aut@@
publishDateDaySort_date	2022-03-29T00:00:00Z
hierarchy_top_id	319584321
id	SPR04661687X
language_de	englisch
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author	Wang, Junfeng
spellingShingle	Wang, Junfeng misc Electrospray cooling misc Heat transfer misc Ethanol/R141b mixture misc Electronic cooling Experimental Investigation of Electrospray Cooling Performance Using the Mixture of Ethanol and R141b
authorStr	Wang, Junfeng
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topic_title	Experimental Investigation of Electrospray Cooling Performance Using the Mixture of Ethanol and R141b Electrospray cooling (dpeaa)DE-He213 Heat transfer (dpeaa)DE-He213 Ethanol/R141b mixture (dpeaa)DE-He213 Electronic cooling (dpeaa)DE-He213
topic	misc Electrospray cooling misc Heat transfer misc Ethanol/R141b mixture misc Electronic cooling
topic_unstemmed	misc Electrospray cooling misc Heat transfer misc Ethanol/R141b mixture misc Electronic cooling
topic_browse	misc Electrospray cooling misc Heat transfer misc Ethanol/R141b mixture misc Electronic cooling
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title	Experimental Investigation of Electrospray Cooling Performance Using the Mixture of Ethanol and R141b
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title_full	Experimental Investigation of Electrospray Cooling Performance Using the Mixture of Ethanol and R141b
author_sort	Wang, Junfeng
journal	International journal of thermophysics
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author_browse	Wang, Junfeng Zhang, Yan Tian, Jiameng Xu, Haojie Zuo, Lei Wang, Dongbao Zuo, Xiaohui
container_volume	43
format_se	Elektronische Aufsätze
author-letter	Wang, Junfeng
doi_str_mv	10.1007/s10765-022-02993-3
title_sort	experimental investigation of electrospray cooling performance using the mixture of ethanol and r141b
title_auth	Experimental Investigation of Electrospray Cooling Performance Using the Mixture of Ethanol and R141b
abstract	Abstract The electrospray (ES) cooling technique, which is a combination of spray cooling and high-voltage electrostatic technology, has attracted considerable interest because of its simple unit structure and low power consumption. To overcome the low flow rate and high boiling point problems of current working fluids, a mixture of R141b and ethanol was used as the working fluid to experimentally investigate the break-up modes at a high flow rate. Furthermore, the effects of break-up modes and ethanol concentration on spray characteristics, cooling performance, and impingement characteristics were examined. The experimental results indicated that ES at a high flow rate exhibited four break-up modes: dropwise, varicose, whipping, and ramified. As the spray mode transitioned from the dropwise to the ramified mode, the droplet size decreased, and the droplet splash phenomenon on the hot surface was suppressed. The cooling performance was considerably enhanced with the evolution of the break-up mode, and the critical heat flux (CHF) was increased by 27.3 % when the break-up mode was transformed into the ramified mode from the dropwise mode. Under certain conditions, an ES cooling efficiency of 92.6 % was achieved. Furthermore, the volume fraction of ethanol (corresponding to the best cooling performance) increased with the wall temperature. In this study, considering the actual requirements of the chip for the cooling capacity, the optimal volume fraction of ethanol in the whole temperature region was determined to be 30 %. These findings can provide theoretical guidance for thermal management of high-power electronic devices. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022
abstractGer	Abstract The electrospray (ES) cooling technique, which is a combination of spray cooling and high-voltage electrostatic technology, has attracted considerable interest because of its simple unit structure and low power consumption. To overcome the low flow rate and high boiling point problems of current working fluids, a mixture of R141b and ethanol was used as the working fluid to experimentally investigate the break-up modes at a high flow rate. Furthermore, the effects of break-up modes and ethanol concentration on spray characteristics, cooling performance, and impingement characteristics were examined. The experimental results indicated that ES at a high flow rate exhibited four break-up modes: dropwise, varicose, whipping, and ramified. As the spray mode transitioned from the dropwise to the ramified mode, the droplet size decreased, and the droplet splash phenomenon on the hot surface was suppressed. The cooling performance was considerably enhanced with the evolution of the break-up mode, and the critical heat flux (CHF) was increased by 27.3 % when the break-up mode was transformed into the ramified mode from the dropwise mode. Under certain conditions, an ES cooling efficiency of 92.6 % was achieved. Furthermore, the volume fraction of ethanol (corresponding to the best cooling performance) increased with the wall temperature. In this study, considering the actual requirements of the chip for the cooling capacity, the optimal volume fraction of ethanol in the whole temperature region was determined to be 30 %. These findings can provide theoretical guidance for thermal management of high-power electronic devices. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022
abstract_unstemmed	Abstract The electrospray (ES) cooling technique, which is a combination of spray cooling and high-voltage electrostatic technology, has attracted considerable interest because of its simple unit structure and low power consumption. To overcome the low flow rate and high boiling point problems of current working fluids, a mixture of R141b and ethanol was used as the working fluid to experimentally investigate the break-up modes at a high flow rate. Furthermore, the effects of break-up modes and ethanol concentration on spray characteristics, cooling performance, and impingement characteristics were examined. The experimental results indicated that ES at a high flow rate exhibited four break-up modes: dropwise, varicose, whipping, and ramified. As the spray mode transitioned from the dropwise to the ramified mode, the droplet size decreased, and the droplet splash phenomenon on the hot surface was suppressed. The cooling performance was considerably enhanced with the evolution of the break-up mode, and the critical heat flux (CHF) was increased by 27.3 % when the break-up mode was transformed into the ramified mode from the dropwise mode. Under certain conditions, an ES cooling efficiency of 92.6 % was achieved. Furthermore, the volume fraction of ethanol (corresponding to the best cooling performance) increased with the wall temperature. In this study, considering the actual requirements of the chip for the cooling capacity, the optimal volume fraction of ethanol in the whole temperature region was determined to be 30 %. These findings can provide theoretical guidance for thermal management of high-power electronic devices. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022
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title_short	Experimental Investigation of Electrospray Cooling Performance Using the Mixture of Ethanol and R141b
url	https://dx.doi.org/10.1007/s10765-022-02993-3
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author2	Zhang, Yan Tian, Jiameng Xu, Haojie Zuo, Lei Wang, Dongbao Zuo, Xiaohui
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up_date	2024-07-03T23:33:43.426Z
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To overcome the low flow rate and high boiling point problems of current working fluids, a mixture of R141b and ethanol was used as the working fluid to experimentally investigate the break-up modes at a high flow rate. Furthermore, the effects of break-up modes and ethanol concentration on spray characteristics, cooling performance, and impingement characteristics were examined. The experimental results indicated that ES at a high flow rate exhibited four break-up modes: dropwise, varicose, whipping, and ramified. As the spray mode transitioned from the dropwise to the ramified mode, the droplet size decreased, and the droplet splash phenomenon on the hot surface was suppressed. The cooling performance was considerably enhanced with the evolution of the break-up mode, and the critical heat flux (CHF) was increased by 27.3 % when the break-up mode was transformed into the ramified mode from the dropwise mode. Under certain conditions, an ES cooling efficiency of 92.6 % was achieved. Furthermore, the volume fraction of ethanol (corresponding to the best cooling performance) increased with the wall temperature. In this study, considering the actual requirements of the chip for the cooling capacity, the optimal volume fraction of ethanol in the whole temperature region was determined to be 30 %. 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Experimental Investigation of Electrospray Cooling Performance Using the Mixture of Ethanol and R141b

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