Anticipated thermal efficiency of solar driven NH3/H2O absorption work producing units

Kouremenos, DA; Rogdakis, E; Antonopoulos, KA

dc.contributor.author	Kouremenos, DA	en
dc.contributor.author	Rogdakis, E	en
dc.contributor.author	Antonopoulos, KA	en
dc.date.accessioned	2014-03-01T01:08:15Z
dc.date.available	2014-03-01T01:08:15Z
dc.date.issued	1991	en
dc.identifier.issn	0196-8904	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10371
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0025852748&partnerID=40&md5=220ac95410eaf8bafe509cee912075b1	en
dc.subject	Mechanical energy	en
dc.subject	NH3/H2O absorption unit	en
dc.subject	Solar work production	en
dc.subject	Thermal conversion	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Mechanics	en
dc.subject.classification	Physics, Nuclear	en
dc.subject.other	Solar Power Plants--Efficiency	en
dc.subject.other	Thermodynamics--Rankine Cycle	en
dc.subject.other	Absorption Cycles	en
dc.subject.other	Ammonia-Water Absorption Units	en
dc.subject.other	Thermal Conversion	en
dc.subject.other	Solar Energy	en
dc.title	Anticipated thermal efficiency of solar driven NH3/H2O absorption work producing units	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1991	en
heal.abstract	A solar driven, work producing, NH3/H2O absorption cycle is considered, which has a theoretical efficiency 25% higher than the conventional H2O Rankine cycle working at the same temperature levels. At higher temperatures, the efficiency of a solar driven H2O Rankine cycle increases, but the corresponding decrease of the solar collector efficiency is quicker, thus resulting in lower overall efficiency. The NH3/H2O absorption cycle is simulated by a computer model which contains analytic functions describing the behaviour of the binary NH3/H2O mixture. Application of the model is made for operation during a typical year in Athens, with the solar radiation and ambient temperature data available from processing of related hourly measurements of 20 yr. The absorption unit is expected to produce a maximum theoretical specific mechanical power output of 80 W/m2-concentrator aperture at 13.00 h in June and July. A maximum theoretical daily mechanical energy of 1500 kJ/m2-day is anticipated for June. The theoretical total mechanical energy of the typical year is expected to be 339,406 kJ/m2-yr. For a 5-h use of this energy per day, the resulting yearly mean mechanical power is 50 W/m2. © 1991.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Energy Conversion and Management	en
dc.identifier.isi	ISI:A1991EQ42100002	en
dc.identifier.volume	31	en
dc.identifier.issue	2	en
dc.identifier.spage	111	en
dc.identifier.epage	119	en