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Investigation of heat transfer properties of granular activated carbon with R723 for adsorption refrigeration and heat pump
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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 . doi:10.1016/j.tsep.2019.05.003 (In Press)
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Official URL: https://doi.org/10.1016/j.tsep.2019.05.003
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 | ||||||||
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| Subjects: | Q Science > Q Science (General) T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery T Technology > TP Chemical technology |
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| Divisions: | Faculty of Science > Engineering | ||||||||
| Journal or Publication Title: | Thermal Science and Engineering Progress | ||||||||
| Publisher: | Elsevier BV | ||||||||
| ISSN: | 2451-9049 | ||||||||
| Official Date: | 10 May 2019 | ||||||||
| Dates: |
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| Date of first compliant deposit: | 5 June 2019 | ||||||||
| DOI: | 10.1016/j.tsep.2019.05.003 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | In Press | ||||||||
| Access rights to Published version: | Open Access | ||||||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC) | ||||||||
| Grant number: | EP/J000876/1 |
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