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

Preview

PDF WRAP_Critoph_220312-manuscript_for_carbon_final.pdf - Accepted Version - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader Download (639Kb)

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
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)
References:	[1] Wang LW, Wang RZ, Oliveira RG. A review on adsorption working pairs for refrigeration. Renewable and Sustainable Energy Reviews. 2009, 13(3); 518-534. [2] Pons M. Global analysis of refrigerative adsorption cycles with thermal regeneration (non-uniform temperature). International Journal of Refrigeration, 1997, 20(6): 411-420. [3] Critoph RE. Carbon–ammonia systems-previous experience, current projects and challenges for the future. In: Proceedings of the international sorption and heat pump conference (ISHPC 2002), Shanghai, China, 2002. [4] Py X., Daguerre E, Goetz V, Spinner B. Composite material comprising activated carbon and expanded graphite. US Patent 2004, 10/182134. [5] Wang LW, Wu JY, Wang RZ, Xu YX, Wang SG, Li XR. Study on the performance of activated carbon-methanol adsorption systems concerning heat and mass transfer. Applied Thermal Engineering 2003; 23: 1605-1617. [6] Tamainot-Telto Z, Critoph RE. Monolithic carbon for sorption refrigeration and heat pump applications. Applied Thermal Engineering 2001; 21: 37-52. [7] G. Cacciola, G. Restuccia, L.Mercadante. Composites of activated carbon for refrigeration adsorption machines. Carbon, 1995, 33(9): 1205-1210 [8] Wang K, Wu JY, Xia ZZ, Li SL, Wang RZ. Design and performance prediction of a novel double heat pipes type adsorption chiller for fishing boats. Renewable Energy 2008; 33(4): 780-90. [9] Mauran, S., Coudevylle, O., Lu, H.B., Optimization of porous reactive media for solid sorption heat pumps. In: Proceedings of the international sorption heat pump conference, Montreal, Canada, 1996; 3-8. [10]Mauran S, Lebrun M, Prades P, Moreau M, Spinner B, Drapier C. Active composite and its use as reaction medium. US Patent 5283219, 1994. [11]L.W. Wang, Z. Tamainot-Telto, R. Thorpe, R.E. Critoph, S.J. Metcalf, R.Z. Wang. Study of thermal conductivity, permeability, and adsorption performance of consolidated composite activated carbon adsorbent for refrigeration. Renewable Enery, 2011, accepted. [12]Py X., Daguerre E, Menard D. Composites of expanded natural graphite and in situ prepared activated carbons. Carbon 2002, 40: 1255-1265. [13]D. Menard, X. Py, N. Mazet. Development of thermally conductive packing for gas separation. Carbon 41 (2003) 1715–1727 [14]D. Menard, X. Py, N. Mazet. Activated carbon monolith of high thermal conductivity for adsorption processes improvement, Part A: Adsorption step. Chemical Engineering and Processing 44 (2005) 1029–1038 [15]Wang LW, Tamainot-Telto Z, Metcalf SJ, Critoph RE, Wang RZ. Anisotropic thermal conductivity and permeability of compacted expanded natural graphite. Applied Thermal Engineering 2010, 30(13): 1805-1811. [16]Tamainot-Telto Z, Critoph RE. Adsorption refrigerator using monolithic carbon-ammonia pair. International Journal of Refrigeration 1997, 20(2):146-155. [17]R. E. Critoph. Performance limitations of adsorption cycles for solar cooling. Solar Energy 1988, 14(1):21-31.
URI:	http://wrap.warwick.ac.uk/id/eprint/42471

Request changes to a record

Actions (login required)

View Item