Thermodynamic analysis and experimental evaluation of active and passive sorption wheels

Koronaki, IP; Rogdakis, E; Kakatsiou, T

dc.contributor.author	Koronaki, IP	en
dc.contributor.author	Rogdakis, E	en
dc.contributor.author	Kakatsiou, T	en
dc.date.accessioned	2014-03-01T02:04:16Z
dc.date.available	2014-03-01T02:04:16Z
dc.date.issued	2011	en
dc.identifier.issn	19708734	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29414
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-82955226295&partnerID=40&md5=f488d06dea1ead1f6323f6d9fdde4e34	en
dc.subject	Active desiccant wheels	en
dc.subject	Correlation model	en
dc.subject	Dehumidification	en
dc.subject	Passive desiccant wheels	en
dc.subject	Sorbents	en
dc.title	Thermodynamic analysis and experimental evaluation of active and passive sorption wheels	en
heal.type	journalArticle	en
heal.publicationDate	2011	en
heal.abstract	Two kinds of sorption wheels, a passive wheel which transfers both sensible and latent heat (enthalpy wheel) and an active desiccant wheel, which removes moisture while adding heat to the incoming air stream (desiccant wheel) are analysed using developed mathematical models, measured and compared with data from the industry. In the present paper, a useful correlation model is also presented to evaluate the performance of an active rotary LiCl desiccant wheel based on ventilation cycle. The model has been derived from the interpolation of experimental data obtained from an experimental setup, while the correlations have been developed for predicting outlet temperature and humidity ratio of the process and regeneration air streams of the wheel. The performance of both sorption wheels depends on a group of parameters and conditions, implicating the system's operation such as the mass flow rate, the process air inlet (to the wheel) and regeneration air inlet (to the wheel) as well as the rotational speed of the wheel. The sorption wheels operate at different rotational speeds. High rotational speeds have a high moisture transport and lower rotational speeds are used for enthalpy exchange. For desiccant wheels, useful expressions are derived so as to predict their performance in various climatic conditions while for enthalpy wheels, the performed dehumidification is not sufficient and thus they frequently need an additional cooling coil for removal of moisture. © 2011 Praise Worthy Prize S.r.l. - All rights reserved.	en
heal.journalName	International Review of Mechanical Engineering	en
dc.identifier.volume	5	en
dc.identifier.issue	2	en
dc.identifier.spage	349	en
dc.identifier.epage	354	en