Khaliji Oskouei, Mohammadhasan and Tamainot-Telto, Zacharie (2019) Investigation of heat transfer properties of granular activated carbon with R723 for adsorption refrigeration and heat pump. Thermal Science and Engineering Progress, 12 . pp. 1-12. doi:10.1016/j.tsep.2019.05.003 ISSN 2451-9049.

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Abstract

This paper investigates the heat transfer coefficient of the wall to packed carbon contact (h) and the thermal conductivity of the packed bed (λ) by using parameters estimation method. A numerical heat conduction method was used in conjunction with an iterative process of minimizing the Mean Square Error (MSE) between both experimentally measured and model predicted temperatures in order to estimate h and λ parameters simultaneously. Experimental work was carried out by measuring the wall and centre temperatures of the sample reactor when suddenly submerged in a temperature controlled water bath at around 90°C. Four samples with packed bed density ranging from 600 kg m-3 to 750 kg m-3 were tested. The results for the GAC-R723 refrigerant pair show a quasi-linear increase in both thermal conductivity (λ) and wall contact heat transfer coefficient (h) with packed bed density. The thermal conductivity of GAC-R723 refrigerant varies between 0.77 W m-1 K-1 and 1.36 W m-1 K-1 (about three times the values without R723 refrigerant) while the wall contact heat transfer coefficient varied between 390 W m-2 K-1 and 735 W m-2 K-1 (up to 30% better than values without R723).

Item Type:	Journal Article
Subjects:	Q Science > QC Physics T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery T Technology > TP Chemical technology
Divisions:	Faculty of Science, Engineering and Medicine > Engineering > Engineering
Library of Congress Subject Headings (LCSH):	Heat -- Transmission, Carbon, Activated, Thermal conductivity, Carbon, Activated -- Thermal conductivity
Journal or Publication Title:	Thermal Science and Engineering Progress
Publisher:	Elsevier BV
ISSN:	2451-9049
Official Date:	August 2019
Dates:	Date Event August 2019 Published 10 May 2019 Available 9 May 2019 Accepted 4 September 2018 Submitted
Volume:	12
Page Range:	pp. 1-12
DOI:	10.1016/j.tsep.2019.05.003
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Open Access (Creative Commons)
Date of first compliant deposit:	5 June 2019
Date of first compliant Open Access:	5 June 2019
RIOXX Funder/Project Grant:	Project/Grant ID RIOXX Funder Name Funder ID EP/J000876/1 [EPSRC] Engineering and Physical Sciences Research Council http://dx.doi.org/10.13039/501100000266 UNSPECIFIED Chemviron Carbon (Brüssel) http://viaf.org/viaf/147476348

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