 Feasibility of driving convective thermal wave chillers with low-grade heatMichael J. Tierney Renewable Energy, 2008, vol. 33, issue 9, 2097-2108 Abstract: A theoretical investigation of a convective thermal wave adsorption chiller was completed. The working pair was activated carbon–methanol. The predicted axial profiles of loading and temperature exhibited the same features as those reported for ammonia-activated carbon beds. For practical purposes, the coefficient of performance (COP) and a dimensionless cooling power were insensitive to the heat capacity of the refrigerant vapour, or the effective thermal conductivity of the refrigerant. With regard to the bed, increasing either its effective heat capacity or its effective axial conductivity strongly impeded performance. The COP and the dimensionless cooling power were mapped against two composite dimensionless groups, formed from a Stanton number, a ratio of interphase heat transfer to axial conduction, and the group aL where a is surface area per unit volume and L is bed length. Realistic pumping power was possible only at the expense of relatively large machines and poor COP; the two attributes that the convective thermal wave machines are intended to enhance. The results discouraged the building of costly experiments. Keywords: Adsorption chillers; Convective thermal wave; Carbon–methanol (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:33:y:2008:i:9:p:2097-2108 DOI: 10.1016/j.renene.2007.12.005 Access Statistics for this article Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides More articles in Renewable Energy from Elsevier |
Is your work missing from RePEc? Here is how to contribute.
Questions or problems? Check the EconPapers FAQ or send mail to .
EconPapers is hosted by the
School of Business at Örebro University.