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Carbon-ammonia pairs for adsorption refrigeration applications : ice making, air conditioning and heat pumping

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Tamainot-Telto, Zacharie, Metcalf, Steven John, Critoph, Robert E., Zhong, Y. and Thorpe, Roger. (2009) Carbon-ammonia pairs for adsorption refrigeration applications : ice making, air conditioning and heat pumping. International Journal of Refrigeration, Vol.32 (No.6). pp. 1212-1229. ISSN 0140-7007

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Official URL: http://dx.doi.org/10.1016/j.ijrefrig.2009.01.008

Abstract

A thermodynamic cycle model is used to select an optimum adsorbent-refrigerant pair in respect of a chosen figure of merit that could be the cooling production (MJ m(-3)), the heating production (MJ m(-3)) or the coefficient of performance (COP). This model is based mainly on the adsorption equilibrium equations of the adsorbent-refrigerant pair and heat flows. The simulation results of 26 various activated carbon-ammonia pairs for three cycles (single bed, two-bed and infinite number of beds) are presented at typical conditions for ice making, air conditioning and heat pumping applications. The driving temperature varies from 80 degrees C to 200 degrees C. The carbon absorbents investigated are mainly coconut shell and coal based types in multiple forms: monolithic, granular, compacted granular, fibre, compacted fibre, cloth, compacted cloth and powder. Considering a two-bed cycle, the best thermal performances based on power density are obtained with the monolithic carbon KOH-AC, with a driving temperature of 100 degrees C; the cooling production is about 66 MJ m(-3) (COP = 0.45) and 151 MJ m(-3) (COP = 0.61) for ice making and air conditioning respectively; the heating production is about 236 MJ m(-3) (COP = 1.50).

Item Type:	Journal Article
Alternative Title:	Les couples charbon actif-ammoniac pour les applications frigorifiques à adsorption : fabrication de glace, conditionnement d'air et pompes à chaleur
Subjects:	Q Science > QC Physics T Technology > TJ Mechanical engineering and machinery T Technology > TP Chemical technology
Divisions:	Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH):	Air-conditioning, Ammonia, Adsorption, Carbon, Activated, Heat pumps, Ice -- Manufacture, Thermodynamic cycles -- Mathematical models
Journal or Publication Title:	International Journal of Refrigeration
Publisher:	Elsevier Ltd.
ISSN:	0140-7007
Date:	September 2009
Volume:	Vol.32
Number:	No.6
Number of Pages:	18
Page Range:	pp. 1212-1229
Identification Number:	10.1016/j.ijrefrig.2009.01.008
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	European Union (EU), Engineering and Physical Sciences Research Council (EPSRC), European Union (EU)
Grant number:	ENK5-CT2002-00632 (EU SOCOOL), TST4-CT-2005-012394 (EU TOPMACS), EP/C013808/1 (EPSRC)
References:	[1] R. E. Critoph - “Towards one tonne per day solar ice maker”. Proc. IVth World Renewable Energy Congress, Denver (US), 1996, pp. 626-631. [2] R. E. Critoph, Z. Tamainot-Telto and E. Munyebvu - Solar Sorption Refrigerator - Renewable Energy, 12 (4) (1997), pp. 409-417. [3] Z. F. Li and K. Sumathy - A solar powered ice maker with the solid adsorption pair of activated carbon and methanol - Int J Energy Res 23 (1999), pp. 517-527 [4] A. Boubakri, J. J. Guilleminot and F. Meunier - Adsorptive solar powered ice maker: experiments and model - Solar Energy 69 (3) (2000), pp. 249-263. [5] A. P. F. Leite and M. Daguenet - Performance of a new solid adsorption ice maker with solar energy regeneration. Energy Conversion Mgmt (2000), pp. 1625-1647 41 [6] M. Li, R. Z. Wang, H. L. Luo, L. L. Wnag and H. B. Huang, Experiments of a solar at plate hybrid system with heating and cooling. Applied Thermal Engineering (2002), pp. 1445-1454. 22 [7] F. Buchter, P. H. Dind and M. Pons - An experimental solar-powered adsorptive refrigeration tested in Burkina–Faso. Int. J Refrigeration 26 (2003), pp. 79-86. [8] S.J. Metcalf, Z. Tamainot-Telto and R. E. Critoph - Compact sorption generator for car and truck using waste-heat, 1rst European Mobile Air Conditioning Workshop, Paper No 05A9019, Torino, Italy, November 2005. [9] R. E. Critoph, S. J. Metcalf, and Z. Tamainot-Telto - Compact plate adsorbers for car air conditioning applications, International Heat Powered Cycles Conference (HPC 2006), Paper No 06124, Newcastle, UK, September 2006. [10] S. J. Metcalf – Gas-fired adsorption heat pump for domestic gas boiler replacement - International Heat Powered Cycles Conference (HPC 2006), Paper No 06137, Newcastle, UK, September 2006. [11] F. Meunier – Second law analysis of a solid adsorption heat pump operating on reversible cascade cycles: application to the zeolite-water pair, Heat Recovery Systems, 5 (1985), pp. 133-141. [12] R. E. Critoph – Adsorption refrigerators and heat pumps – Carbon materials for advanced technologies, Edited by Timothy D. Burchell, Chap. 10, pp. 303-340,1999, ISBN 0-08-042683-2
URI:	http://wrap.warwick.ac.uk/id/eprint/17382