Evaporators for methyl amine/water/helium absorption refrigeration units

Kouremenos, DA; Antonopoulos, KA; Stegou-Sagia, A

dc.contributor.author	Kouremenos, DA	en
dc.contributor.author	Antonopoulos, KA	en
dc.contributor.author	Stegou-Sagia, A	en
dc.date.accessioned	2014-03-01T02:48:31Z
dc.date.available	2014-03-01T02:48:31Z
dc.date.issued	1997	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33883
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0031363688&partnerID=40&md5=26164a6c4916358bccf202bdf0caaad4	en
dc.subject.other	Evaporators	en
dc.subject.other	Finite difference method	en
dc.subject.other	Heat transfer	en
dc.subject.other	Helium	en
dc.subject.other	Mass transfer	en
dc.subject.other	Thermodynamics	en
dc.subject.other	Methyl amine	en
dc.subject.other	Refrigerators	en
dc.title	Evaporators for methyl amine/water/helium absorption refrigeration units	en
heal.type	conferenceItem	en
heal.publicationDate	1997	en
heal.abstract	The present work considers replacement of hydrogen, in neutral gas absorption-refrigeration units, by helium, in order to eliminate the danger of a possible explosion. The case of system working with methyl amine as refrigerant and water as absorbent is examined, as alternative combination, to the conventional aqua-ammonia systems. Attention is focused to the evaporator and a solution is obtained for the three-dimensional evaporation process of a liquid methyl amine stream of circular meniscus cross-section, flowing parallel to a methyl amine-helium gas mixture, within a nearly horizontal evaporation tube. The related procedure is based on a finite-difference solution of a set of differential equations, expressing the three-dimensional transport of momentum, heat and mass. Expressions are also developed for the thermodynamic and transport properties of the methyl amine-helium mixture. The results show that methyl amine and helium may be satisfactory substitutes for ammonia and hydrogen, respectively.	en
heal.publisher	Int Acad Publ	en
heal.journalName	Proceedings of the International Conference on Thermodynamic Analysis and Improvement of Energy Systems, TAIES'97	en
dc.identifier.spage	250	en
dc.identifier.epage	257	en