Author, as appears in the article.: Álvarez M; Bourouis M
Department: Enginyeria Mecànica
URV's Author/s: Bourouis Chebata, Mahmoud
Keywords: Vapor Triple-effect absorption cooling cycle Triple-effect absorption Performance Horizontal tube falling film absorber High-temperature heat sources Aqueous nitrates solution Alkitrate
Abstract: © 2018 Elsevier Ltd This paper deals with an experimental study which was carried out to investigate the absorption process with the aqueous solution of nitrates (Li, K, Na) in salt mass compositions of 53, 28 and 19%, respectively, used as a working fluid in a horizontal tube falling film absorber. This working fluid was proposed for use in the last stage of triple-effect absorption cooling cycles driven by high temperature heat sources (up to 260 °C). Taking into account these operating conditions, an experimental mini-absorber was designed and built. In a previous study, the optimal configuration of the solution distributor was determined based on flow visualisations to ensure a uniform distribution of the solution on the external surface of the tubes. A sensitivity study of the operating variables of the absorber was then carried out to evaluate a series of efficiency parameters for the absorber. At the operating conditions established in the experimental tests, the absorption rate ranged from 2.83 to 6.55 g m−2 s−1, the heat transfer coefficient of the falling film varied between 631.9 and 1715.8 W m−2 °C−1, while the mass transfer coefficient was between 2.1 × 10−5 and 6.0 × 10−5 m s−1.
Thematic Areas: Thermodynamics Renewable energy, sustainability and the environment Química Pollution Modeling and simulation Medicina iii Medicina ii Mechanical engineering Materiais Management, monitoring, policy and law Interdisciplinar Industrial and manufacturing engineering Geografía Geociências General energy Fuel technology Engineering, chemical Engenharias iv Engenharias iii Engenharias ii Engenharias i Energy engineering and power technology Energy (miscellaneous) Energy (all) Energy & fuels Electrical and electronic engineering Economia Civil and structural engineering Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Building and construction Biotecnología Biodiversidade Administração pública e de empresas, ciências contábeis e turismo
licence for use: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 03605442
Author's mail: mahmoud.bourouis@urv.cat
Author identifier: 0000-0003-2476-5967
Record's date: 2024-09-07
Papper version: info:eu-repo/semantics/acceptedVersion
Link to the original source: https://www.sciencedirect.com/science/article/abs/pii/S036054421830063X?via%3Dihub
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Energy. 148 876-887
APA: Álvarez M; Bourouis M (2018). Experimental characterization of heat and mass transfer in a horizontal tube falling film absorber using aqueous (lithium, potassium, sodium) nitrate solution as a working pair. Energy, 148(), 876-887. DOI: 10.1016/j.energy.2018.01.052
Article's DOI: 10.1016/j.energy.2018.01.052
Entity: Universitat Rovira i Virgili
Journal publication year: 2018
Publication Type: Journal Publications
Repositori URV