A novel approach for modelling LiBr-H2O falling film absorption on cooled horizontal bundle of tubes

Papaefthimiou, VD; Koronaki, IP; Karampinos, DC; Rogdakis, ED

dc.contributor.author	Papaefthimiou, VD	en
dc.contributor.author	Koronaki, IP	en
dc.contributor.author	Karampinos, DC	en
dc.contributor.author	Rogdakis, ED	en
dc.date.accessioned	2014-03-01T02:53:32Z
dc.date.available	2014-03-01T02:53:32Z
dc.date.issued	2012	en
dc.identifier.issn	01407007	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36399
dc.subject	Absorption cycle	en
dc.subject	Aqueous solution	en
dc.subject	Bank	en
dc.subject	Horizontal tube	en
dc.subject	Refrigeration	en
dc.subject	Water-lithium bromide	en
dc.subject.other	Absorption process	en
dc.subject.other	Bank	en
dc.subject.other	Coupled heat and mass transfer	en
dc.subject.other	Falling film absorption	en
dc.subject.other	Heat of absorptions	en
dc.subject.other	Horizontal tubes	en
dc.subject.other	Inlet conditions	en
dc.subject.other	Mass flow rate	en
dc.subject.other	Maximum Efficiency	en
dc.subject.other	Solution temperature	en
dc.subject.other	Transport phenomena	en
dc.subject.other	Tube banks	en
dc.subject.other	Two dimensional numerical models	en
dc.subject.other	Water vapour	en
dc.subject.other	Water-lithium bromide	en
dc.subject.other	Mass transfer	en
dc.subject.other	Partial differential equations	en
dc.subject.other	Refrigeration	en
dc.subject.other	Solutions	en
dc.subject.other	Tubes (components)	en
dc.subject.other	Two dimensional	en
dc.subject.other	Water absorption	en
dc.subject.other	Absorption refrigeration	en
dc.title	A novel approach for modelling LiBr-H2O falling film absorption on cooled horizontal bundle of tubes	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1016/j.ijrefrig.2012.01.015	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.ijrefrig.2012.01.015	en
heal.publicationDate	2012	en
heal.abstract	A two-dimensional numerical model is developed to describe the coupled heat and mass transfer phenomena for treating the two-dimensional water vapour absorption into an aqueous solution of LiBr, flowing over a bundle of smooth horizontal tubes. Unlike other studies, the partial differential equations describing the transport phenomena of the absorption process are solved using an efficient computational method. Emphasis is given in describing the electrolytic nature of the aqueous solution, introducing the effect of variable heat of absorption on the temperature field. The increase of solution mass flow rate results in the reduction of the solution temperature and concentration at the outlet of the tube bank. For solution mass flow rates higher than a certain value, the solution temperature and concentration remain unchanged. Thus, for given cooling water and solution inlet conditions, the maximum efficiency of the absorption process is directly related to a certain number of horizontal tubes. © 2012 Elsevier Ltd and IIR. All rights reserved.	en
heal.journalName	International Journal of Refrigeration	en
dc.identifier.doi	10.1016/j.ijrefrig.2012.01.015	en
dc.identifier.volume	35	en
dc.identifier.issue	4	en
dc.identifier.spage	1115	en
dc.identifier.epage	1122	en