Parametric analysis of membrane-based absorbers at air-cooling thermal conditions

Faisal Asfand, Mahmoud Bourouis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Continued improvements in the design and configuration of the absorber have been suggested to reduce its size for utilization in small scale applications. Use of membrane contactors in the form of hollow fiber membrane module or plate-and-frame membrane module is one of the alternatives to achieve compact absorbers. Most of the research in absorption cooling systems is done using the conventional working fluid mixtures, water/LiBr and ammonia-water with water as a cooling medium. Moreover, there is a growing interest for air-cooled absorption chillers, for which water/(LiBr + LiI + LiNO3 + LiCl) mixture is proposed as working fluid due to its larger range of solubility. In this study, numerical analyses are performed to evaluate the performance of a plate-and-frame membrane based absorber both with water/LiBr and water/(LiBr + LiI + LiNO3 + LiCl) at air-cooled conditions. Results shows that a 25% increase in the absorption rate can be achieved utilizing water/(LiBr+LiI+LiNO3+LiCl) working fluid mixture when compared to water/LiBr at air cooled conditions without crystallization problems.

Original languageEnglish
Title of host publicationECOS 2019
Subtitle of host publicationProceedings of the 32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
EditorsWojciech Stanek, Pawel Gladysz, Sebastian Werle, Wojciech Adamczyk
PublisherInstitute of Thermal Technology
Pages3917-3930
Number of pages14
Volume2019-June
ISBN (Print)9788361506515
Publication statusPublished - 1 Jun 2019
Externally publishedYes
Event32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems - Wroclaw, Poland
Duration: 23 Jun 201928 Jun 2019
Conference number: 32
http://www.s-conferences.eu/ecos2019 (Conference link)

Conference

Conference32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
Abbreviated titleECOS 2019
CountryPoland
CityWroclaw
Period23/06/1928/06/19
Internet address

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