Experimental correlation for flow-boiling heat transfer in a micro-gap evaporator with internal micro-fins

Micro-gap evaporators are prospective candidates for cooling of micro-electronic devices. Heat transfer with phase change in a micro-gap heat sink is efficient for high heat flux applications. Micro-fins induce turbulence escalating two-phase heat transfer rate in the micro-gap evaporator. However,...

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Main Authors:	Ahmed, Shugata, Ismail, Ahmad Faris, Sulaeman, Erwin, Hasan, Muhammad Hasibul
Format:	Article
Language:	English English
Published:	Penerbit Akademia Baru 2019
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://irep.iium.edu.my/67602/ http://irep.iium.edu.my/67602/ http://irep.iium.edu.my/67602/9/67602%20Experimental%20Correlation%20for%20Flow-boiling%20Heat%20Transfer.pdf http://irep.iium.edu.my/67602/10/67602%20Experimental%20Correlation%20for%20Flow-boiling%20Heat%20Transfer%20SCOPUS.pdf

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recordtype	eprints
spelling	iium-676022019-07-12T08:51:21Z http://irep.iium.edu.my/67602/ Experimental correlation for flow-boiling heat transfer in a micro-gap evaporator with internal micro-fins Ahmed, Shugata Ismail, Ahmad Faris Sulaeman, Erwin Hasan, Muhammad Hasibul TJ Mechanical engineering and machinery Micro-gap evaporators are prospective candidates for cooling of micro-electronic devices. Heat transfer with phase change in a micro-gap heat sink is efficient for high heat flux applications. Micro-fins induce turbulence escalating two-phase heat transfer rate in the micro-gap evaporator. However, no correlation has been developed so far for fin-induced pseudo-turbulence and heat transfer rate in micro-gap heat sink. The scope of this paper is to develop a correlation for dimensionless heat transfer rate in a micro-finned micro-gap heat sink for refrigerant 134a. The correlation signifies the effect of evaporation rate on thermal resistance of the heat sink. For this purpose, a micro-gap evaporator was fabricated with a gap height adjusted to accommodate 48 rectangular shaped micro-fins. A heater at the bottom of the heat sink provides variable heat flux. The evaporator is installed in a test section along with a heat pump in the outer circuit. The frequency of the compressor is varied using a variable frequency drive. A pre-heater is used to vary inlet temperature of refrigerant. In the developed correlation, dimensionless heat flux is function of calculated vapor Reynolds number and Biot number. Results calculated from the correlation show maximum 2.7% error in comparison to actual results Penerbit Akademia Baru 2019-02 Article PeerReviewed application/pdf en http://irep.iium.edu.my/67602/9/67602%20Experimental%20Correlation%20for%20Flow-boiling%20Heat%20Transfer.pdf application/pdf en http://irep.iium.edu.my/67602/10/67602%20Experimental%20Correlation%20for%20Flow-boiling%20Heat%20Transfer%20SCOPUS.pdf Ahmed, Shugata and Ismail, Ahmad Faris and Sulaeman, Erwin and Hasan, Muhammad Hasibul (2019) Experimental correlation for flow-boiling heat transfer in a micro-gap evaporator with internal micro-fins. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 54 (1). pp. 1-8. ISSN 2289-7879 http://www.akademiabaru.com/doc/ARFMTSV54_N1_P1_8.pdf
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Ahmed, Shugata Ismail, Ahmad Faris Sulaeman, Erwin Hasan, Muhammad Hasibul Experimental correlation for flow-boiling heat transfer in a micro-gap evaporator with internal micro-fins
description	Micro-gap evaporators are prospective candidates for cooling of micro-electronic devices. Heat transfer with phase change in a micro-gap heat sink is efficient for high heat flux applications. Micro-fins induce turbulence escalating two-phase heat transfer rate in the micro-gap evaporator. However, no correlation has been developed so far for fin-induced pseudo-turbulence and heat transfer rate in micro-gap heat sink. The scope of this paper is to develop a correlation for dimensionless heat transfer rate in a micro-finned micro-gap heat sink for refrigerant 134a. The correlation signifies the effect of evaporation rate on thermal resistance of the heat sink. For this purpose, a micro-gap evaporator was fabricated with a gap height adjusted to accommodate 48 rectangular shaped micro-fins. A heater at the bottom of the heat sink provides variable heat flux. The evaporator is installed in a test section along with a heat pump in the outer circuit. The frequency of the compressor is varied using a variable frequency drive. A pre-heater is used to vary inlet temperature of refrigerant. In the developed correlation, dimensionless heat flux is function of calculated vapor Reynolds number and Biot number. Results calculated from the correlation show maximum 2.7% error in comparison to actual results
format	Article
author	Ahmed, Shugata Ismail, Ahmad Faris Sulaeman, Erwin Hasan, Muhammad Hasibul
author_facet	Ahmed, Shugata Ismail, Ahmad Faris Sulaeman, Erwin Hasan, Muhammad Hasibul
author_sort	Ahmed, Shugata
title	Experimental correlation for flow-boiling heat transfer in a micro-gap evaporator with internal micro-fins
title_short	Experimental correlation for flow-boiling heat transfer in a micro-gap evaporator with internal micro-fins
title_full	Experimental correlation for flow-boiling heat transfer in a micro-gap evaporator with internal micro-fins
title_fullStr	Experimental correlation for flow-boiling heat transfer in a micro-gap evaporator with internal micro-fins
title_full_unstemmed	Experimental correlation for flow-boiling heat transfer in a micro-gap evaporator with internal micro-fins
title_sort	experimental correlation for flow-boiling heat transfer in a micro-gap evaporator with internal micro-fins
publisher	Penerbit Akademia Baru
publishDate	2019
url	http://irep.iium.edu.my/67602/ http://irep.iium.edu.my/67602/ http://irep.iium.edu.my/67602/9/67602%20Experimental%20Correlation%20for%20Flow-boiling%20Heat%20Transfer.pdf http://irep.iium.edu.my/67602/10/67602%20Experimental%20Correlation%20for%20Flow-boiling%20Heat%20Transfer%20SCOPUS.pdf
first_indexed	2023-09-18T21:35:57Z
last_indexed	2023-09-18T21:35:57Z
_version_	1777412821263319040

Experimental correlation for flow-boiling heat transfer in a micro-gap evaporator with internal micro-fins

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