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Exergy Analysis of Fluidized Desiccant Cooling System

One of the main challenges in the design and implementation of fluidized desiccant cooling (FDC) systems is increasing their low COP (coefficient of performance). Exergy analysis is one of the tools especially suitable for improvement and optimization of FDC systems. The improvement of performance i...

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Autores principales: Rogala, Zbigniew, Kolasiński, Piotr
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7515286/
https://www.ncbi.nlm.nih.gov/pubmed/33267471
http://dx.doi.org/10.3390/e21080757
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author Rogala, Zbigniew
Kolasiński, Piotr
author_facet Rogala, Zbigniew
Kolasiński, Piotr
author_sort Rogala, Zbigniew
collection PubMed
description One of the main challenges in the design and implementation of fluidized desiccant cooling (FDC) systems is increasing their low COP (coefficient of performance). Exergy analysis is one of the tools especially suitable for improvement and optimization of FDC systems. The improvement of performance is impossible as long as the main sources of exergy destruction are not identified and evaluated. In this paper, the exergy analysis was applied in order to identify these components and processes of the FDC system that are mainly responsible for exergy destruction. Moreover, the exergy efficiency of a simple fluidized desiccant cooler was determined. The results showed that fluidized beds and regenerative heat exchanger were the main exergy destruction sources with a 32% and 18% share of total exergy destruction, respectively. On the other hand, the direct evaporative cooler and air cooler placed after the desorbing fluidized bed were characterized by the lowest exergy efficiencies. This work contributes to better understanding of FDC operation principles and improvement of the performance of FDC technology.
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spelling pubmed-75152862020-11-09 Exergy Analysis of Fluidized Desiccant Cooling System Rogala, Zbigniew Kolasiński, Piotr Entropy (Basel) Article One of the main challenges in the design and implementation of fluidized desiccant cooling (FDC) systems is increasing their low COP (coefficient of performance). Exergy analysis is one of the tools especially suitable for improvement and optimization of FDC systems. The improvement of performance is impossible as long as the main sources of exergy destruction are not identified and evaluated. In this paper, the exergy analysis was applied in order to identify these components and processes of the FDC system that are mainly responsible for exergy destruction. Moreover, the exergy efficiency of a simple fluidized desiccant cooler was determined. The results showed that fluidized beds and regenerative heat exchanger were the main exergy destruction sources with a 32% and 18% share of total exergy destruction, respectively. On the other hand, the direct evaporative cooler and air cooler placed after the desorbing fluidized bed were characterized by the lowest exergy efficiencies. This work contributes to better understanding of FDC operation principles and improvement of the performance of FDC technology. MDPI 2019-08-02 /pmc/articles/PMC7515286/ /pubmed/33267471 http://dx.doi.org/10.3390/e21080757 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Rogala, Zbigniew
Kolasiński, Piotr
Exergy Analysis of Fluidized Desiccant Cooling System
title Exergy Analysis of Fluidized Desiccant Cooling System
title_full Exergy Analysis of Fluidized Desiccant Cooling System
title_fullStr Exergy Analysis of Fluidized Desiccant Cooling System
title_full_unstemmed Exergy Analysis of Fluidized Desiccant Cooling System
title_short Exergy Analysis of Fluidized Desiccant Cooling System
title_sort exergy analysis of fluidized desiccant cooling system
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7515286/
https://www.ncbi.nlm.nih.gov/pubmed/33267471
http://dx.doi.org/10.3390/e21080757
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