Irreversible NH3/H2O absorption cycle and its graphical representation

Kouremenos, DA; Rogdakis, ED

dc.contributor.author	Kouremenos, DA	en
dc.contributor.author	Rogdakis, ED	en
dc.date.accessioned	2014-03-01T02:47:53Z
dc.date.available	2014-03-01T02:47:53Z
dc.date.issued	1989	en
dc.identifier.issn	02725673	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33409
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0024776918&partnerID=40&md5=509b9075dda31c4a8278901de9e5123d	en
dc.subject.other	Computer Simulation	en
dc.subject.other	Mathematical Models	en
dc.subject.other	Refrigerants--Ammonia	en
dc.subject.other	Thermodynamics--Research	en
dc.subject.other	Binary Mixture	en
dc.subject.other	Coefficient of Performance	en
dc.subject.other	Irreversible NH/HO Absorption Cycle	en
dc.subject.other	Mass Fraction	en
dc.subject.other	Temperature Enthalpy Diagram	en
dc.subject.other	Temperature-Entropy Diagram	en
dc.subject.other	Refrigerating Machinery	en
dc.title	Irreversible NH3/H2O absorption cycle and its graphical representation	en
heal.type	conferenceItem	en
heal.publicationDate	1989	en
heal.abstract	A detailed second law analysis of the complete absorption cycle using the binary mixture NH3/H2O is presented. The irreversibilities taken into consideration include temperature and mass fraction differences prevailing in vapor and liquid phases being in contact, temperature differences between the two streams of heat exchanging devices and heat losses from the unit to the ambient. Using a special-method developed by the authors, it is possible to draw a complete temperature-entropy and/or a temperature-enthalpy diagram containing both the reversible and the irreversible cycles depicting heat losses to the ambient and irreversibilities. The computer code, developed for this purpose, considers the influence of the different irreversibilities and heat losses. Apart from delivering the expected Coefficient Of Performance (COP) values it can be used to localize those part of the cycle where excessive entropy production prevailes. Results are presented showing the decrease of the COP with growing irreversibilities and heat losses to the ambient.	en
heal.publisher	Publ by ASME, New York, NY, United States	en
heal.journalName	American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD	en
dc.identifier.volume	124	en
dc.identifier.spage	97	en
dc.identifier.epage	103	en