A high efficiency NH3/H2O absorption power cycle

Rogdakis, ED; Antonopoulos, KA

dc.contributor.author	Rogdakis, ED	en
dc.contributor.author	Antonopoulos, KA	en
dc.date.accessioned	2014-03-01T01:08:13Z
dc.date.available	2014-03-01T01:08:13Z
dc.date.issued	1991	en
dc.identifier.issn	0890-4332	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10341
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0025751195&partnerID=40&md5=cf7175b353aa662be400376077fcba8a	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Mechanics	en
dc.subject.other	Thermodynamics - Efficiency	en
dc.subject.other	Absorption Cycles	en
dc.subject.other	Ammonia-Water Absorption Cycles	en
dc.subject.other	Power Cycles	en
dc.subject.other	Electric Power Generation	en
dc.title	A high efficiency NH3/H2O absorption power cycle	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1991	en
heal.abstract	A work producing cycle has been developed showing a thermodynamic efficiency considerably higher than that of the Rankine cycle. The new cycle employs a mixture of H2O and NH3 as the working fluid and uses an absorption process similar to that of absorption refrigerators. Its advantage over existing power cycles working with the same mixture (i.e. the Kalina cycle) is simplicity as far as devices, construction, operation and maintenance are concerned. For the detailed calculation of the proposed cycle a method has been developed, which employs analytical functions describing the thermodynamic properties of the NH3/H2O mixture. The proposed cycle has been compared with Rankine cycles working at the same temperature levels. For fixed upper (i.e. superheating) and lower (i.e. condensation) temperatures, the new cycle shows an efficiency 20% higher than that of the Rankine cycle if the boiling temperature is high, while for low boiling temperatures the superiority of the proposed cycle is much more pronounced. A parametric study has also been conducted for the new cycle, wwhich showed, inter alia, that the optimum difference between the mass fractions of the rich and weak solution is about 0.1 kg NH3/kg mixture. © 1991.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Heat Recovery Systems and CHP	en
dc.identifier.isi	ISI:A1991GD65700009	en
dc.identifier.volume	11	en
dc.identifier.issue	4	en
dc.identifier.spage	263	en
dc.identifier.epage	275	en