Performance of a solar driven compound NH3/H2OH2O/LiBr absorption refrigeration system in athens

Kouremenos, DA; Antonopoulos, KA; Rogdakis, E

dc.contributor.author	Kouremenos, DA	en
dc.contributor.author	Antonopoulos, KA	en
dc.contributor.author	Rogdakis, E	en
dc.date.accessioned	2014-03-01T01:40:00Z
dc.date.available	2014-03-01T01:40:00Z
dc.date.issued	1990	en
dc.identifier.issn	0741983X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/23051
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0025564562&partnerID=40&md5=9ad35c0151954e4cbaaa9bc6f06a447d	en
dc.subject.other	Data Processing--Natural Sciences Applications	en
dc.subject.other	Refrigerating Machinery--Absorption	en
dc.subject.other	Solar Radiation--Calculations	en
dc.subject.other	Coefficient of Performance	en
dc.subject.other	Compound System	en
dc.subject.other	Refrigeration	en
dc.title	Performance of a solar driven compound NH3/H2OH2O/LiBr absorption refrigeration system in athens	en
heal.type	journalArticle	en
heal.publicationDate	1990	en
heal.abstract	A solar driven, high efficiency, compound refrigeration system is considered, made up of two cooperating absorption parts, which use NH3/H2O and H2O/LiBr solutions, respectively. Solar heat is given to the vapour generator of the NH3/H2O unit, and the heat produced by the absorber and the condenser of this unit is supplied to the vapour generator of the H2O/LiBr unit. A method for simulating the operation of the compound system has been developed and applied for predicting the hour by hour performance of the system operating during the typical year in Athens, for which solar radiation and ambient temperature data are available. An optimization study for the compound and the individual cycles has also been made. Very high performance of the system has been predicted. For example, on 21 May, the calculated theoretical coefficient of performance is 219% while the corresponding theoretical values of single H2O/LiBr and NH3/H2O units are 93% and 65% respectively. The corresponding calculated cooling power produced by the system is 543 W/m2-collector. An annual analysis shows that the cooling produced by a NH3/H2O unit in Athens is 0.87 GJ/m2-year, while the present compound system gives an impressive increase to 3 GJ/m2-year. © 1990.	en
heal.journalName	Solar and Wind Technology	en
dc.identifier.volume	7	en
dc.identifier.issue	6	en
dc.identifier.spage	685	en
dc.identifier.epage	697	en