Performance of solar NH3/H2O absorption cycles in the athens area

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	2014-03-01T01:06:58Z
dc.date.available	2014-03-01T01:06:58Z
dc.date.issued	1987	en
dc.identifier.issn	0038-092X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9698
dc.subject.classification	Energy & Fuels	en
dc.subject.other	REFRIGERATING MACHINERY - Absorption	en
dc.subject.other	REFRIGERATION - Solar	en
dc.subject.other	THERMODYNAMICS	en
dc.subject.other	ABSORPTION REFRIGERATION UNITS	en
dc.subject.other	HEAT TRANSFORMERS	en
dc.subject.other	REVERSED ABSORPTION UNITS	en
dc.subject.other	SOLAR COLLECTORS	en
dc.subject.other	SOLAR RADIATION	en
dc.title	Performance of solar NH3/H2O absorption cycles in the athens area	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0038-092X(87)80027-0	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0038-092X(87)80027-0	en
heal.language	English	en
heal.publicationDate	1987	en
heal.abstract	The performance of solar driven NH3/H2O absorption units, operating in conjunction with high and intermediate temperature solar collectors in Athens, is predicted along the typical year, in the cases (a) of absorption refrigeration units working as refrigerators, (b) of absorption refrigeration units working as heat pumps and (c) of reversed absorption units working as heat transformers. In all cases, the operation of the units and the related thermodynamics are simulated by suitable computer codes, and the required local climatological data (i.e. the incident solar radiation and the ambient temperature) are determined by statistical processings of related hourly measurements over a considerable number of years. It is found that in the case of the refrigerator, for operation over the whole year, the theoretical coefficient of performance varies in the range from 72 to 75% and a maximum theoretical specific cooling power of 223 W/m2 is observed on July at 13 hrs. In the case of the heat pump, for operation from November to April, a maximum theoretical heat gain factor of about 170% is obtained on December with corresponding specific heat gain power amounting to 213 W/m2 at 14 hrs, while a maximum theoretical specific heat gain power of 344 W/m2 is observed on April at 13 hrs with a corresponding heat gain factor of about 165.5%. Lastly, in the case of the heat transformer, for operation over the whole year, a maximum theoretical heat gain factor of about 48.3% is observed during winter at about 13 hrs but with very small specific heat gain power, while a maximum specific heat gain power of 175 W/m2 is obtainable on July at noon with a corresponding heat gain factor of 44.5%. © 1987 Pergamon Journals Ltd.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Solar Energy	en
dc.identifier.doi	10.1016/S0038-092X(87)80027-0	en
dc.identifier.isi	ISI:A1987J808200004	en
dc.identifier.volume	39	en
dc.identifier.issue	3	en
dc.identifier.spage	187	en
dc.identifier.epage	195	en