Thermal Performance of Cryogenic Micro-Pin Fin Coolers with Two-Phase Liquid Nitrogen Flows

This study experimentally explores the thermofluidic performance of a cryogenic micro-pin fin cooler with two-phase liquid nitrogen flows. The liquid nitrogen cooling system is introduced to investigate the performance of the micro-pin cooler in a cryogenic condition. The result reveals that the nom...

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Autores principales:	Kyoung Joon Kim, Hyeon Ho Yang, Wooheon Noh, Bongtae Han, Avram Bar-Cohen
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	cryogenic micro-pin fin two-phase liquid nitrogen heat transfer Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/6b49d05f324f4c3f9f8fdc083e8235c5
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id	oai:doaj.org-article:6b49d05f324f4c3f9f8fdc083e8235c5
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spelling	oai:doaj.org-article:6b49d05f324f4c3f9f8fdc083e8235c52021-11-25T16:43:44ZThermal Performance of Cryogenic Micro-Pin Fin Coolers with Two-Phase Liquid Nitrogen Flows10.3390/app1122110712076-3417https://doaj.org/article/6b49d05f324f4c3f9f8fdc083e8235c52021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/22/11071https://doaj.org/toc/2076-3417This study experimentally explores the thermofluidic performance of a cryogenic micro-pin fin cooler with two-phase liquid nitrogen flows. The liquid nitrogen cooling system is introduced to investigate the performance of the micro-pin cooler in a cryogenic condition. The result reveals that the nominal value of the base heat transfer coefficients of the micro-pin fin cooler with liquid nitrogen flows, 240 kW/m<sup>2</sup>-K at a mass flow rate of 2.23 g/s, is an order of magnitude greater than that with FC-72 flows. The result also demonstrates that the base heat transfer coefficient of the micro-pin fin cooler is nearly three times greater than that of the micro-gap cooler, not containing any fins. This study shows the feasibility of the cryogenic micro-pin fin cooler for thermally controlling very high heat density devices such as high-power laser diode bars, of which the heat density can reach 2000 kW/m<sup>2</sup>.Kyoung Joon KimHyeon Ho YangWooheon NohBongtae HanAvram Bar-CohenMDPI AGarticlecryogenicmicro-pin fintwo-phaseliquid nitrogenheat transferTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 11071, p 11071 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cryogenic micro-pin fin two-phase liquid nitrogen heat transfer Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	cryogenic micro-pin fin two-phase liquid nitrogen heat transfer Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Kyoung Joon Kim Hyeon Ho Yang Wooheon Noh Bongtae Han Avram Bar-Cohen Thermal Performance of Cryogenic Micro-Pin Fin Coolers with Two-Phase Liquid Nitrogen Flows
description	This study experimentally explores the thermofluidic performance of a cryogenic micro-pin fin cooler with two-phase liquid nitrogen flows. The liquid nitrogen cooling system is introduced to investigate the performance of the micro-pin cooler in a cryogenic condition. The result reveals that the nominal value of the base heat transfer coefficients of the micro-pin fin cooler with liquid nitrogen flows, 240 kW/m<sup>2</sup>-K at a mass flow rate of 2.23 g/s, is an order of magnitude greater than that with FC-72 flows. The result also demonstrates that the base heat transfer coefficient of the micro-pin fin cooler is nearly three times greater than that of the micro-gap cooler, not containing any fins. This study shows the feasibility of the cryogenic micro-pin fin cooler for thermally controlling very high heat density devices such as high-power laser diode bars, of which the heat density can reach 2000 kW/m<sup>2</sup>.
format	article
author	Kyoung Joon Kim Hyeon Ho Yang Wooheon Noh Bongtae Han Avram Bar-Cohen
author_facet	Kyoung Joon Kim Hyeon Ho Yang Wooheon Noh Bongtae Han Avram Bar-Cohen
author_sort	Kyoung Joon Kim
title	Thermal Performance of Cryogenic Micro-Pin Fin Coolers with Two-Phase Liquid Nitrogen Flows
title_short	Thermal Performance of Cryogenic Micro-Pin Fin Coolers with Two-Phase Liquid Nitrogen Flows
title_full	Thermal Performance of Cryogenic Micro-Pin Fin Coolers with Two-Phase Liquid Nitrogen Flows
title_fullStr	Thermal Performance of Cryogenic Micro-Pin Fin Coolers with Two-Phase Liquid Nitrogen Flows
title_full_unstemmed	Thermal Performance of Cryogenic Micro-Pin Fin Coolers with Two-Phase Liquid Nitrogen Flows
title_sort	thermal performance of cryogenic micro-pin fin coolers with two-phase liquid nitrogen flows
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/6b49d05f324f4c3f9f8fdc083e8235c5
work_keys_str_mv	AT kyoungjoonkim thermalperformanceofcryogenicmicropinfincoolerswithtwophaseliquidnitrogenflows AT hyeonhoyang thermalperformanceofcryogenicmicropinfincoolerswithtwophaseliquidnitrogenflows AT wooheonnoh thermalperformanceofcryogenicmicropinfincoolerswithtwophaseliquidnitrogenflows AT bongtaehan thermalperformanceofcryogenicmicropinfincoolerswithtwophaseliquidnitrogenflows AT avrambarcohen thermalperformanceofcryogenicmicropinfincoolerswithtwophaseliquidnitrogenflows
_version_	1718413024200491008

Thermal Performance of Cryogenic Micro-Pin Fin Coolers with Two-Phase Liquid Nitrogen Flows

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