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Thermal conductivity measurement of activated carbon with granular graphite

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Tamainot-Telto, Zacharie and Mayet, Danyal (2016) Thermal conductivity measurement of activated carbon with granular graphite. In: IVth International Symposium on Innovative Materials for Processes in Energy Systems - IMPRES 2016, Taormina, Sicily, Italy, 23-26 Oct 2016. Published in: Chemical Science and Engineering Series 4 p. 105. ISBN 9784944005215.

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Official URL: http://www.impres2016.org

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Abstract

The granular activated carbon used as adsorbent material in refrigeration systems and heat pumps often presents low thermal conductivity (in the order of 0.15 W/m2.K). Therefore the period of the adsorption/desorption cycle is longer, hence reducing the thermal efficiency of the heat pump/refrigeration system. In order to partially rectify this issue, activated carbon is often mixed expanded natural graphite (ENG) and compacted in order to enhance the thermal conductivity. The disadvantage of this technique is the reduction of gas permeability through the mixture over pure granular activated carbon. In order to overcome this negative effect, the proposed work is to mix granular activated carbon (GAC/208C) with granular graphite (GG) and to evaluate both the thermal conductivity of the mixture and the contact heat transfer coefficient between the matrix and the container (stainless steel tube). The preliminary test results with 20% GG and 80% GAC (not compacted) shows an increase of the thermal conduction with a factor of about 1.5 compared to ordinary GAC (with 0% GG).

Item Type: Conference Item (Paper)
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TH Building construction
T Technology > TJ Mechanical engineering and machinery
T Technology > TP Chemical technology
Divisions: Faculty of Science, Engineering and Medicine > Engineering > Engineering
Journal or Publication Title: Chemical Science and Engineering Series 4
Publisher: I2CNER
ISBN: 9784944005215
Official Date: 4 October 2016
Dates:
DateEvent
4 October 2016Published
6 June 2016Accepted
14 April 2016Submitted
Page Range: p. 105
Status: Peer Reviewed
Publication Status: Published
Conference Paper Type: Paper
Title of Event: IVth International Symposium on Innovative Materials for Processes in Energy Systems - IMPRES 2016
Type of Event: Conference
Location of Event: Taormina, Sicily, Italy
Date(s) of Event: 23-26 Oct 2016

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