Simulation par la mécanique numérique des fluides (CFD) et validation expérimentale de l'adsorption de l’éthanol sur un échangeur de chaleur compact à charbon actif

Translated title of the contribution: CFD simulation and experimental validation of ethanol adsorption onto activated carbon packed heat exchanger

Skander Jribi, Takahiko Miyazaki, Bidyut Baran Saha, Shigeru Koyama, Shinnosuke Maeda, Tomohiro Maruyama

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Experimental validation of simulated adsorber/desorber beds for sorption cooling applications is essential to obtain reliable results. We have conducted rigorous simulation of the adsorption process occurring in a finned tube adsorber utilizing 2D-axisymmetric geometry. The adsorber uses activated carbon–ethanol as adsorbent–refrigerant pair. It is cooled with water at nearly 30 °C and experiencing a sharp pressure increase of ethanol from 0.95 kPa initially to 6 kPa. The simulated temperatures at adsorbent thicknesses of 0, 1, 5 and 10 mm from tube outer diameter showed an increase in adsorbent temperature up to 20 °C from its initial temperature. They were slightly higher at start of adsorption and were consistent with experimental data at higher flow time. The validated CFD model will serve as a base for evaluating and optimizing activated carbon–ethanol adsorption cooling cycle. It can be extended also to different adsorber designs and other adsorbent–adsorbate pairs.

Original languageFrench
Pages (from-to)343-351
Number of pages9
JournalInternational Journal of Refrigeration
Volume74
DOIs
Publication statusPublished - Feb 1 2017

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Activated carbon
Heat exchangers
Computational fluid dynamics
Ethanol
Adsorption
Adsorbents
Cooling
Temperature
Sorption
Geometry
Water

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Mechanical Engineering

Cite this

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title = "Simulation par la m{\'e}canique num{\'e}rique des fluides (CFD) et validation exp{\'e}rimentale de l'adsorption de l’{\'e}thanol sur un {\'e}changeur de chaleur compact {\`a} charbon actif",
abstract = "Experimental validation of simulated adsorber/desorber beds for sorption cooling applications is essential to obtain reliable results. We have conducted rigorous simulation of the adsorption process occurring in a finned tube adsorber utilizing 2D-axisymmetric geometry. The adsorber uses activated carbon–ethanol as adsorbent–refrigerant pair. It is cooled with water at nearly 30 °C and experiencing a sharp pressure increase of ethanol from 0.95 kPa initially to 6 kPa. The simulated temperatures at adsorbent thicknesses of 0, 1, 5 and 10 mm from tube outer diameter showed an increase in adsorbent temperature up to 20 °C from its initial temperature. They were slightly higher at start of adsorption and were consistent with experimental data at higher flow time. The validated CFD model will serve as a base for evaluating and optimizing activated carbon–ethanol adsorption cooling cycle. It can be extended also to different adsorber designs and other adsorbent–adsorbate pairs.",
author = "Skander Jribi and Takahiko Miyazaki and Saha, {Bidyut Baran} and Shigeru Koyama and Shinnosuke Maeda and Tomohiro Maruyama",
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AU - Jribi, Skander

AU - Miyazaki, Takahiko

AU - Saha, Bidyut Baran

AU - Koyama, Shigeru

AU - Maeda, Shinnosuke

AU - Maruyama, Tomohiro

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AB - Experimental validation of simulated adsorber/desorber beds for sorption cooling applications is essential to obtain reliable results. We have conducted rigorous simulation of the adsorption process occurring in a finned tube adsorber utilizing 2D-axisymmetric geometry. The adsorber uses activated carbon–ethanol as adsorbent–refrigerant pair. It is cooled with water at nearly 30 °C and experiencing a sharp pressure increase of ethanol from 0.95 kPa initially to 6 kPa. The simulated temperatures at adsorbent thicknesses of 0, 1, 5 and 10 mm from tube outer diameter showed an increase in adsorbent temperature up to 20 °C from its initial temperature. They were slightly higher at start of adsorption and were consistent with experimental data at higher flow time. The validated CFD model will serve as a base for evaluating and optimizing activated carbon–ethanol adsorption cooling cycle. It can be extended also to different adsorber designs and other adsorbent–adsorbate pairs.

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