Exergy analysis of a desiccant cooling cycle recovering heat from hot exhaust

Abstract : The manufacturing processes of industrial gases are major consumers of energy as electricity or fossil fuel. A big part of this energy ends up as heat in the process gas at temperatures around 150°C. Today, this thermal energy is generally released to the atmosphere through cooling towers. In this paper, the recovery of waste heat by the production of cooling capacity is considered via a desiccant cooling cycle. The liquid desiccant dehumidification and regeneration processes, uses lithium chloride (LiCl) as a liquid desiccant. The numerical model is upgraded permitting the calculation of the exergy destruction due to water evaporation rate in the regenerator, the desiccant temperature and concentration at the exit of the regenerator. An exergy analysis of the hot exhaust and the desiccant cooling cycle is performed, assessing the global exergy efficiency variation as a function of each operating parameter in the studied cycle and permitting the identification of the optimal design.
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https://hal-mines-paristech.archives-ouvertes.fr/hal-01463176
Contributeur : Joelle Andrianarijaona <>
Soumis le : jeudi 9 février 2017 - 14:19:43
Dernière modification le : mercredi 13 novembre 2019 - 11:50:04

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  • HAL Id : hal-01463176, version 1

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C. Maatouk, A. Ezzeddine, A Zoughaib. Exergy analysis of a desiccant cooling cycle recovering heat from hot exhaust . 14th International Refrigeration and Air Conditioning Conference at Purdue, Refrigeration, paper 2279, Jul 2012, Purdue, United States. ⟨hal-01463176⟩

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