Experimental investigations on heat and mass transfer performances of a liquid desiccant cooling and dehumidification system

The last decades have witnessed the growth interest in Liquid Desiccant Dehumidification Systems (LDDS). In the conventional LDDS, the high dilution rate of desiccant solution in dehumidifier leads to a high desiccant regeneration frequency, which consequently results in more thermal energy consumed...

Full description

Saved in:
Bibliographic Details
Main Authors: Ou, Xianhua, Cai, Wenjian, He, Xiongxiong, Zhai, Deqing
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2020
Subjects:
Online Access:https://hdl.handle.net/10356/140847
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-140847
record_format dspace
spelling sg-ntu-dr.10356-1408472020-06-02T07:28:16Z Experimental investigations on heat and mass transfer performances of a liquid desiccant cooling and dehumidification system Ou, Xianhua Cai, Wenjian He, Xiongxiong Zhai, Deqing School of Electrical and Electronic Engineering Centre for System Intelligence and Efficiency Centre for E-City Engineering::Electrical and electronic engineering LDCD Liquid Desiccant The last decades have witnessed the growth interest in Liquid Desiccant Dehumidification Systems (LDDS). In the conventional LDDS, the high dilution rate of desiccant solution in dehumidifier leads to a high desiccant regeneration frequency, which consequently results in more thermal energy consumed by desiccant regeneration system. Therefore, a more energy efficient Liquid Desiccant Cooling and Dehumidification (LDCD) system is developed in this study, which mainly composes of a cooling coil and dehumidifier. A simple static model is proposed to predict the performances of heat and mass transfer process in this system. The thermal efficiency, moisture effectiveness and desiccant dilution rate are utilized as the performance indicators. The influences of several relevant parameters on the cooling and dehumidification performances of LDCD system are investigated. The model predictions are compared with the experimental data, and the results show that the model predictions are well in line with the experimental data with the maximum errors less than 10%. Moreover, the feasibility of LDCD system in reducing the dilution rate of desiccant solution and the system energy consumption is validated. The results indicate that the dilution rate of desiccant solution and energy consumption of the LDCD system are reduced by 39.64% and 22.3% over the conventional LDDS, respectively. NRF (Natl Research Foundation, S’pore) 2020-06-02T07:28:16Z 2020-06-02T07:28:16Z 2018 Journal Article Ou, X., Cai, W., He, X., & Zhai, D. (2018). Experimental investigations on heat and mass transfer performances of a liquid desiccant cooling and dehumidification system. Applied Energy, 220, 164-175. doi:10.1016/j.apenergy.2018.03.087 0306-2619 https://hdl.handle.net/10356/140847 10.1016/j.apenergy.2018.03.087 2-s2.0-85044516199 220 164 175 en Applied Energy © 2018 Elsevier Ltd. All rights reserved.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
LDCD
Liquid Desiccant
spellingShingle Engineering::Electrical and electronic engineering
LDCD
Liquid Desiccant
Ou, Xianhua
Cai, Wenjian
He, Xiongxiong
Zhai, Deqing
Experimental investigations on heat and mass transfer performances of a liquid desiccant cooling and dehumidification system
description The last decades have witnessed the growth interest in Liquid Desiccant Dehumidification Systems (LDDS). In the conventional LDDS, the high dilution rate of desiccant solution in dehumidifier leads to a high desiccant regeneration frequency, which consequently results in more thermal energy consumed by desiccant regeneration system. Therefore, a more energy efficient Liquid Desiccant Cooling and Dehumidification (LDCD) system is developed in this study, which mainly composes of a cooling coil and dehumidifier. A simple static model is proposed to predict the performances of heat and mass transfer process in this system. The thermal efficiency, moisture effectiveness and desiccant dilution rate are utilized as the performance indicators. The influences of several relevant parameters on the cooling and dehumidification performances of LDCD system are investigated. The model predictions are compared with the experimental data, and the results show that the model predictions are well in line with the experimental data with the maximum errors less than 10%. Moreover, the feasibility of LDCD system in reducing the dilution rate of desiccant solution and the system energy consumption is validated. The results indicate that the dilution rate of desiccant solution and energy consumption of the LDCD system are reduced by 39.64% and 22.3% over the conventional LDDS, respectively.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Ou, Xianhua
Cai, Wenjian
He, Xiongxiong
Zhai, Deqing
format Article
author Ou, Xianhua
Cai, Wenjian
He, Xiongxiong
Zhai, Deqing
author_sort Ou, Xianhua
title Experimental investigations on heat and mass transfer performances of a liquid desiccant cooling and dehumidification system
title_short Experimental investigations on heat and mass transfer performances of a liquid desiccant cooling and dehumidification system
title_full Experimental investigations on heat and mass transfer performances of a liquid desiccant cooling and dehumidification system
title_fullStr Experimental investigations on heat and mass transfer performances of a liquid desiccant cooling and dehumidification system
title_full_unstemmed Experimental investigations on heat and mass transfer performances of a liquid desiccant cooling and dehumidification system
title_sort experimental investigations on heat and mass transfer performances of a liquid desiccant cooling and dehumidification system
publishDate 2020
url https://hdl.handle.net/10356/140847
_version_ 1681059433960964096