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Development of thermal conductive consolidated activated carbon for adsorption refrigeration

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Wang, L. W., Metcalf, Steven John, Critoph, Robert E., Thorpe, Roger and Tamainot-Telto, Zacharie. (2012) Development of thermal conductive consolidated activated carbon for adsorption refrigeration. Carbon, Vol.50 (No.3). pp. 977-986. ISSN 0008-6223

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Abstract

A new type consolidated composite activated carbon (AC) was developed with a host matrix of expanded natural graphite treated with sulfuric acid (ENG-TSA). Samples with different density, different grain size of AC, and different proportion of AC were produced and thermo-physical properties were evaluated. Results show that the highest effective thermal conductivity and thermal diffusivity of consolidated composite AC were 34.2 W m−1 K−1 and 3.89 × 10−5 m2 s−1, which were 150 times and 72 times higher, respectively, than ordinary granular AC. The permeability of adsorbents ranged between 1.24 × 10−14 and 7.81 × 10−10 m2 while the density ranged between 215 and 448 kg m−3. The adsorption performance for composite AC and granular AC were evaluated by fitting experimental data with the equilibrium Dubinin–Astakhov (D–A) equations. Results show that the addition of ENG-TSA can improve the performance of adsorption refrigeration machines by increasing the concentration swing.

Item Type: Journal Article
Subjects: T Technology > TP Chemical technology
Divisions: Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH): Carbon, Activated -- Absorption and adsorption, Carbon, Activated -- Thermal properties
Journal or Publication Title: Carbon
Publisher: Pergamon
ISSN: 0008-6223
Official Date: March 2012
Volume: Vol.50
Number: No.3
Page Range: pp. 977-986
Identification Number: 10.1016/j.carbon.2011.09.061
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: Royal Society (Great Britain), Guo jia zi ran ke xue ji jin wei yuan hui (China) [National Natural Science Foundation of China] (NSFC), National 100 Outstanding PhD thesis Foundation (China), Advantage West Midlands (AWM), Birmingham Science City
Grant number: 50806043 (NSFC)
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URI: http://wrap.warwick.ac.uk/id/eprint/42471

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