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Energy performance of independent air dehumidification systems with energy recovery measures

Independent air dehumidification provides an attractive alternative to traditional coupled air dehumidification with reduced energy use, better humidity control and indoor air quality. According to this concept, latent load is treated by an independent system and the sensible load is treated by chil...

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Autor principal: Zhang, L.Z.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier Ltd. 2006
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7118925/
https://www.ncbi.nlm.nih.gov/pubmed/32288041
http://dx.doi.org/10.1016/j.energy.2005.05.027
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author Zhang, L.Z.
author_facet Zhang, L.Z.
author_sort Zhang, L.Z.
collection PubMed
description Independent air dehumidification provides an attractive alternative to traditional coupled air dehumidification with reduced energy use, better humidity control and indoor air quality. According to this concept, latent load is treated by an independent system and the sensible load is treated by chilled-ceiling panels. In this work, four independent air dehumidification systems with energy recovery strategies are proposed. They are as follows: system 1, mechanical dehumidification with heat pump; system 2, mechanical dehumidification with sensible heat exchanger; system 3, mechanical dehumidification with membrane-based total heat exchanger; and system 4: a heat pump incorporating an active desiccant wheel and evaporative cooler. They are compared with a mechanical dehumidification system with no heat recovery. Hour-by-hour energy analysis is performed on the systems proposed. The results show that the system of mechanical dehumidification with membrane total heat recovery (system 3) consumes the least primary energy. However, since, the systems employ energy recovery measures, the energy savings for the four systems are in the same order, around 4.40×10(6) kJ per person.
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spelling pubmed-71189252020-04-03 Energy performance of independent air dehumidification systems with energy recovery measures Zhang, L.Z. Energy (Oxf) Article Independent air dehumidification provides an attractive alternative to traditional coupled air dehumidification with reduced energy use, better humidity control and indoor air quality. According to this concept, latent load is treated by an independent system and the sensible load is treated by chilled-ceiling panels. In this work, four independent air dehumidification systems with energy recovery strategies are proposed. They are as follows: system 1, mechanical dehumidification with heat pump; system 2, mechanical dehumidification with sensible heat exchanger; system 3, mechanical dehumidification with membrane-based total heat exchanger; and system 4: a heat pump incorporating an active desiccant wheel and evaporative cooler. They are compared with a mechanical dehumidification system with no heat recovery. Hour-by-hour energy analysis is performed on the systems proposed. The results show that the system of mechanical dehumidification with membrane total heat recovery (system 3) consumes the least primary energy. However, since, the systems employ energy recovery measures, the energy savings for the four systems are in the same order, around 4.40×10(6) kJ per person. Elsevier Ltd. 2006-07 2005-07-06 /pmc/articles/PMC7118925/ /pubmed/32288041 http://dx.doi.org/10.1016/j.energy.2005.05.027 Text en Copyright © 2005 Elsevier Ltd. All rights reserved. Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.
spellingShingle Article
Zhang, L.Z.
Energy performance of independent air dehumidification systems with energy recovery measures
title Energy performance of independent air dehumidification systems with energy recovery measures
title_full Energy performance of independent air dehumidification systems with energy recovery measures
title_fullStr Energy performance of independent air dehumidification systems with energy recovery measures
title_full_unstemmed Energy performance of independent air dehumidification systems with energy recovery measures
title_short Energy performance of independent air dehumidification systems with energy recovery measures
title_sort energy performance of independent air dehumidification systems with energy recovery measures
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7118925/
https://www.ncbi.nlm.nih.gov/pubmed/32288041
http://dx.doi.org/10.1016/j.energy.2005.05.027
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