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dc.contributor.authorElsayed, Ahmed
dc.contributor.authorAl-Dadah, Raya
dc.contributor.authorMahmoud, Saad
dc.contributor.authorKaialy, Waseem
dc.date.accessioned2018-09-06T10:31:00Z
dc.date.available2018-09-06T10:31:00Z
dc.date.issued2018-03-01
dc.identifier.issn1543-5075
dc.identifier.issn1543-5083
dc.identifier.doi10.1080/15435075.2014.937867
dc.identifier.urihttp://hdl.handle.net/2436/621682
dc.description.abstractCommercially available adsorption cooling systems use water/silica gel, water/zeolite and ammonia/ chloride salts working pairs. The water based pairs are limited to work above 0 °C due to the water high freezing temperature, while ammonia has the disadvantage of being toxic. Ethanol is a promising refrigerant due to its low freezing point (161 K), non-toxicity, zero ozone depletion and low global warming potential. Activated carbon (AC) is a porous material with high degree of porosity (500-3000 m2/g) that has been used in wide range of applications. Using Dynamic Vapour Sorption (DVS) test facility, this work characterizes the ethanol adsorption of eleven commercially available activated carbon materials for cooling at low temperature of - 15oC. DVS adsorption results show that Maxsorb has the best performance in terms of ethanol uptake and adsorption kinetics compared to the other tested materials. The Maxsorb/ethanol adsorption process has been numerically modeled using computational fluid dynamics (CFD) and simulation results are validated using the DVS experimental measurements. The validated CFD simulation of the adsorption process is used to predict the effects of adsorbent layer thickness and packing density on cycle uptake for evaporating temperature of -15oC. Simulation results show that as the thickness of the Maxsorb adsorbent layer increases, its uptake decreases. As for the packing density, the amount of ethanol adsorbed per plate increases with the packing density reaching maximum at 750 kg/m3. This work shows the potential of using Maxsorb/ethanol in producing low temperature cooling down to -15oC with specific cooling energy reaching 400kJ/kg.
dc.language.isoen
dc.publisherTaylor & Francis Online
dc.relation.urlhttps://www.tandfonline.com/doi/full/10.1080/15435075.2014.937867
dc.subjectActivated carbons/ethanol
dc.subjectadsorption cooling
dc.subjectcomputational fluid dynamics (CFD)
dc.subjectlow temperature refrigeration
dc.titleInvestigation of activated carbon/ethanol for low temperature adsorption cooling
dc.typeJournal article
dc.identifier.journalInternational Journal of Green Energy
dc.date.accepted2015-12-14
dc.source.journaltitleInternational Journal of Green Energy
dc.source.volume15
dc.source.issue5
dc.source.beginpage277
dc.source.endpage285
refterms.dateFOA2019-06-03T10:17:27Z


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