Experimental characterisation of a novel adiabatic membrane-based micro-absorber using H2O-LiBr

García Hernando, Néstor; Vega Blázquez, Mercedes de; Venegas Bernal, María Carmen

Publication:
Experimental characterisation of a novel adiabatic membrane-based micro-absorber using H2O-LiBr

dc.affiliation.dpto	UC3M. Departamento de Ingeniería Térmica y de Fluidos	es
dc.affiliation.grupoinv	UC3M. Grupo de Investigación: Tecnologías Apropiadas para el Desarrollo Sostenible	es
dc.affiliation.grupoinv	UC3M. Grupo de Investigación: Ingeniería de Sistemas Energéticos	es
dc.contributor.author	García Hernando, Néstor
dc.contributor.author	Vega Blázquez, Mercedes de
dc.contributor.author	Venegas Bernal, María Carmen
dc.contributor.funder	Ministerio de Economía y Competitividad (España)	es
dc.date.accessioned	2021-04-23T08:54:23Z
dc.date.available	2021-04-23T08:54:23Z
dc.date.issued	2019-02
dc.description.abstract	In the interest of reducing the size of absorption chillers, a novel adiabatic membrane-based micro-absorber prototype is experimentally studied. Water-lithium bromide solution is used as the working fluid flowing through 50 rectangular microchannels of 0.15mm height, 3 mm width and 58 mm length. In the present study, a laminated microporous PTFE membrane of 0.45 µm pore diameter, separating the solution from the vapour, is tested. It incorporates a supporting layer of polypropylene. Different operating parameters were tested, including the inlet solution mass flow rate, temperature and concentration and the pressure potential for absorption. The measured concentration and temperature of the solution at the absorber outlet are used to evaluate the mass transfer characteristics of the micro-absorber. It is demonstrated that the process is controlled by the solution mass transfer resistance. Calculated results of the absorption rate and the absorption ratio show the advantages of the proposed design considering its compactness. The cooling power of a hypothetical chiller equipped with the tested micro-absorber of 73.7 cm3 effective volume, for the range of variables considered in this study, is 41 W. The modular configuration of the absorber allows to easily scale-up the cooling capacity.	en
dc.format.extent	7
dc.identifier.bibliographicCitation	García-Hernando, N., de Vega, M. & Venegas, M. (2019). Experimental characterisation of a novel adiabatic membrane-based micro-absorber using H2O-LiBr. International Journal of Heat and Mass Transfer, vol. 129, pp. 1136–1143.	en
dc.identifier.doi	https://doi.org/10.1016/j.ijheatmasstransfer.2018.10.046
dc.identifier.issn	0017-9310
dc.identifier.publicationfirstpage	1136
dc.identifier.publicationlastpage	1143
dc.identifier.publicationtitle	International Journal of Heat and Mass Transfer	en
dc.identifier.publicationvolume	129
dc.identifier.uri	https://hdl.handle.net/10016/32466
dc.identifier.uxxi	AR/0000022303
dc.language.iso	eng
dc.publisher	Elsevier	en
dc.relation.projectID	Gobierno de España. DPI2017-83123-R	es
dc.rights	© 2018 Elsevier Ltd.	en
dc.rights	Atribución-NoComercial-SinDerivadas 3.0 España	*
dc.rights.accessRights	open access	en
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/es/	*
dc.subject.eciencia	Energías Renovables	es
dc.subject.other	Absorption refrigeration	en
dc.subject.other	Adiabatic micro-absorber	en
dc.subject.other	Membranes	en
dc.subject.other	Rectangular microchannels	en
dc.subject.other	Water-lithium bromide	en
dc.subject.other	Absorption	en
dc.subject.other	Perfomance	en
dc.subject.other	Design	en
dc.title	Experimental characterisation of a novel adiabatic membrane-based micro-absorber using H2O-LiBr	en
dc.type	research article	*
dc.type.hasVersion	AM	*
dspace.entity.type	Publication