Performance investigation of a novel hybrid deep-dehumidification process using liquid desiccant

As one of the essential dehumidification ways, liquid desiccant air conditioning system has developed quickly in recent years, especially in the deep dehumidification field. A novel hybrid deep- dehumidification system using liquid desiccant driven by heat pump is proposed in this study to simplify...

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Main Authors: Guan Bowen, Liu Jun, Liu Xiaohua, Zhang Tao, Chen Liangliang, Chen Xiaoyang
Format: Article
Language:English
Published: EDP Sciences 2019-01-01
Series:E3S Web of Conferences
Online Access:https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/37/e3sconf_clima2019_01047.pdf
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spelling doaj-993e193dc6954116b5dd4273a42885da2021-02-02T08:38:48ZengEDP SciencesE3S Web of Conferences2267-12422019-01-011110104710.1051/e3sconf/201911101047e3sconf_clima2019_01047Performance investigation of a novel hybrid deep-dehumidification process using liquid desiccantGuan Bowen0Liu Jun1Liu Xiaohua2Zhang Tao3Chen Liangliang4Chen Xiaoyang5Department of Building Science, Tsinghua UniversityDepartment of Building Science, Tsinghua UniversityDepartment of Building Science, Tsinghua UniversityDepartment of Building Science, Tsinghua UniversityBeijing Sino-refine air-conditioning Co., LTDBeijing Sino-refine air-conditioning Co., LTDAs one of the essential dehumidification ways, liquid desiccant air conditioning system has developed quickly in recent years, especially in the deep dehumidification field. A novel hybrid deep- dehumidification system using liquid desiccant driven by heat pump is proposed in this study to simplify the arrangement of air ducts and guarantee a competitive energy efficiency. In the proposed process, the regenerator, condensing dehumidifier and liquid dehumidifier are cascaded, and the process air flow through them sequentially. Heat pump cycle is utilized in the system, where the cooling capacity of evaporator is used to cool the liquid desiccant in dehumidifier, and the heating capacity of condenser is used for desiccant regeneration. The humidity ratio of the supplied air is as low as 2.6 g/kg. No extra regeneration air or corresponding air duct are needed in the proposed process, which obviously simplifies the layout of the system. Performance of the proposed system is then analysed by numerical results. It’s indicated 17.5~29.2% energy is saved compared with the conventional deep dehumidification process with two-stage heat pump, with the outlet humidity ratio of 2.6 g/kg.https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/37/e3sconf_clima2019_01047.pdf
collection DOAJ
language English
format Article
sources DOAJ
author Guan Bowen
Liu Jun
Liu Xiaohua
Zhang Tao
Chen Liangliang
Chen Xiaoyang
spellingShingle Guan Bowen
Liu Jun
Liu Xiaohua
Zhang Tao
Chen Liangliang
Chen Xiaoyang
Performance investigation of a novel hybrid deep-dehumidification process using liquid desiccant
E3S Web of Conferences
author_facet Guan Bowen
Liu Jun
Liu Xiaohua
Zhang Tao
Chen Liangliang
Chen Xiaoyang
author_sort Guan Bowen
title Performance investigation of a novel hybrid deep-dehumidification process using liquid desiccant
title_short Performance investigation of a novel hybrid deep-dehumidification process using liquid desiccant
title_full Performance investigation of a novel hybrid deep-dehumidification process using liquid desiccant
title_fullStr Performance investigation of a novel hybrid deep-dehumidification process using liquid desiccant
title_full_unstemmed Performance investigation of a novel hybrid deep-dehumidification process using liquid desiccant
title_sort performance investigation of a novel hybrid deep-dehumidification process using liquid desiccant
publisher EDP Sciences
series E3S Web of Conferences
issn 2267-1242
publishDate 2019-01-01
description As one of the essential dehumidification ways, liquid desiccant air conditioning system has developed quickly in recent years, especially in the deep dehumidification field. A novel hybrid deep- dehumidification system using liquid desiccant driven by heat pump is proposed in this study to simplify the arrangement of air ducts and guarantee a competitive energy efficiency. In the proposed process, the regenerator, condensing dehumidifier and liquid dehumidifier are cascaded, and the process air flow through them sequentially. Heat pump cycle is utilized in the system, where the cooling capacity of evaporator is used to cool the liquid desiccant in dehumidifier, and the heating capacity of condenser is used for desiccant regeneration. The humidity ratio of the supplied air is as low as 2.6 g/kg. No extra regeneration air or corresponding air duct are needed in the proposed process, which obviously simplifies the layout of the system. Performance of the proposed system is then analysed by numerical results. It’s indicated 17.5~29.2% energy is saved compared with the conventional deep dehumidification process with two-stage heat pump, with the outlet humidity ratio of 2.6 g/kg.
url https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/37/e3sconf_clima2019_01047.pdf
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