Autor según el artículo: Amaris, Carlos; Bourouis, Mahmoud; Vallès, Manel
Departamento: Enginyeria Mecànica
Autor/es de la URV: Bourouis Chebata, Mahmoud / Vallès Rasquera, Joan Manel
Palabras clave: Tubular heat exchanger Lithium nitrate Bubble absorber Ammonia Advanced surfaces
Resumen: An experimental study was conducted to investigate the effect of advanced surfaces on the ammonia absorption process in tubular bubble absorbers using NH3/LiNO3 as a working pair at operating conditions of interest for absorption chillers. The tubular bubble absorber is a vertical double-pipe heat exchanger in which absorption takes place in the inner tube. In order to compare the effect of surface enhancement, a smooth tube and an internally micro-finned tube were tested. The inner tube of the absorber is made of aluminium and has an outer diameter of 8.0 mm and the micro-finned tube has internal helical micro-fins measuring 0.3 mm in length. The effect of tube length on absorption was also studied using two tube lengths (1 and 3 m) and two tube diameters (8 and 9.5 mm). Our results show that the absorption rate achieved with the micro-finned tube is up to 1.7 times higher than with the smooth tube at a solution mass flow rate of 40 kg h−1. We also found that absorption mass flux increases when tube diameter is reduced and decreases when tube length is increased.
Áreas temáticas: Thermodynamics Mechanics Mechanical engineering Materiais Matemática / probabilidade e estatística Interdisciplinar Geociências Fluid flow and transfer processes Engineering, mechanical Engenharias iv Engenharias iii Engenharias ii Engenharias i Condensed matter physics Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Biotecnología Astronomia / física
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
Direcció de correo del autor: manel.valles@urv.cat mahmoud.bourouis@urv.cat
Identificador del autor: 0000-0002-0748-1287 0000-0003-2476-5967
Fecha de alta del registro: 2023-05-13
Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
Enlace a la fuente original: https://www.sciencedirect.com/science/article/abs/pii/S0017931014000593
URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/
Referencia al articulo segun fuente origial: International Journal Of Heat And Mass Transfer. 72 544-552
Referencia de l'ítem segons les normes APA: Amaris, Carlos; Bourouis, Mahmoud; Vallès, Manel (2014). Effect of advanced surfaces on the ammonia absorption process with NH 3/LiNO3 in a tubular bubble absorber. International Journal Of Heat And Mass Transfer, 72(), 544-552. DOI: 10.1016/j.ijheatmasstransfer.2014.01.031
DOI del artículo: 10.1016/j.ijheatmasstransfer.2014.01.031
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2014
Tipo de publicación: Journal Publications
Repositori URV