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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 J., 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. doi:10.1016/j.ijrefrig.2009.01.008 ISSN 0140-7007.

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

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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 and Medicine > Engineering > 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
Official Date: September 2009
Dates:
DateEvent
September 2009Published
Volume: Vol.32
Number: No.6
Number of Pages: 18
Page Range: pp. 1212-1229
DOI: 10.1016/j.ijrefrig.2009.01.008
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Date of first compliant deposit: 8 December 2015
Date of first compliant Open Access: 8 December 2015
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)

Data sourced from Thomson Reuters' Web of Knowledge

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