Performance characteristics of two combined ejector-absorption cycles

Alexis, GK; Rogdakis, ED

dc.contributor.author	Alexis, GK	en
dc.contributor.author	Rogdakis, ED	en
dc.date.accessioned	2014-03-01T01:18:11Z
dc.date.available	2014-03-01T01:18:11Z
dc.date.issued	2002	en
dc.identifier.issn	1359-4311	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14855
dc.subject	Absorption	en
dc.subject	Ammonia-water mixture	en
dc.subject	Coefficient of performance	en
dc.subject	Ejector	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	Absorption	en
dc.subject.other	Ammonia	en
dc.subject.other	Binary mixtures	en
dc.subject.other	Computer simulation	en
dc.subject.other	Ejectors (pumps)	en
dc.subject.other	Entropy	en
dc.subject.other	Evaporators	en
dc.subject.other	Steam condensers	en
dc.subject.other	Thermal effects	en
dc.subject.other	Thermodynamics	en
dc.subject.other	Water	en
dc.subject.other	Coefficient of performance (COP)	en
dc.subject.other	Refrigerators	en
dc.title	Performance characteristics of two combined ejector-absorption cycles	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S1359-4311(01)00057-6	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S1359-4311(01)00057-6	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	The paper describes the performance of an ammonia-water combined ejector-absorption cycle as refrigerator using two simple models. In the first an ejector draws vapour from an evaporator and discharges to a condenser. In the second, an ejector draws vapour from an evaporator and discharges to an absorber. The thermodynamics cycles and ejector operation on the temperature-entropy charts are shown. The thermodynamics of the combined ejector-absorption cycle are simulated by a suitable method and a corresponding computer code, based on analytic functions, describes the behaviour of the binary mixture NH3-H2O, It was found from the first model that the refrigerator (theoretical) coefficient of performance (COP) varied from 1.099 to 1.355 when the operation conditions were: generation temperature (237 degreesC), condenser temperature (25.9-30.6 degreesC), absorber temperature (48.6-59.1 degreesC) and evaporator temperature (-1.1-7.7 degreesC). In the second the theoretical COP vary from 0.274 to 0.382 when the operation conditions were: generation temperature (237 degreesC), condenser temperature (91 degreesC), absorber temperature (76.7-81 degreesC) and evaporator temperature (-1.1-7.7 degreesC). (C) 2001 Elsevier Science Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Applied Thermal Engineering	en
dc.identifier.doi	10.1016/S1359-4311(01)00057-6	en
dc.identifier.isi	ISI:000172357100006	en
dc.identifier.volume	22	en
dc.identifier.issue	1	en
dc.identifier.spage	97	en
dc.identifier.epage	106	en