Numerical Study on Heat and Mass Transfer of the Cross-flow Liquid Desiccant Regenerator

Yang Li; Zhibo Fu; Xiaohu Yang; Lianying Zhang; Qunli Zhang; Wenju Hu

doi:10.1016/j.proeng.2017.10.212

Numerical Study on Heat and Mass Transfer of the Cross-flow Liquid Desiccant Regenerator

Yang Li
, Zhibo Fu
, Xiaohu Yang
, Lianying Zhang
, Qunli Zhang
, Wenju Hu

School of Energy and Power Engineering

Research output: Contribution to journal › Conference article › peer-review

4 Scopus citations

Abstract

Liquid desiccant air conditioning (LDAC) system becomes more and more environmentally friendly and efficient than vapor compression cooling system to control air humidity. This paper concentrates on the heat and mass transfer process of cross-flow liquid desiccant regeneration. A cross-flow theoretical model based on finite difference method was established. The LiBr aqueous solution was used as the liquid desiccant. A mass transfer empirical correlation fitted by experimental results was introduced to the model. The software MATLAB was adopted to solve the control equations. The results show the maximum differences of air temperature and humidity ratio reach 3.8 °C and 4.2 g•kg^-1 in air outlet, respectively. There exists an optimal NTU_m in regenerator based on a certain operation condition.

Original language	English
Pages (from-to)	2647-2654
Number of pages	8
Journal	Procedia Engineering
Volume	205
DOIs	https://doi.org/10.1016/j.proeng.2017.10.212
State	Published - 2017
Event	10th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2017 - Jinan, China Duration: 19 Oct 2017 → 22 Oct 2017

Keywords

Cross-flow
Heat
LiBr aqueous solution
Liquid desiccant regenerator
mass transfer

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10.1016/j.proeng.2017.10.212

Cite this

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title = "Numerical Study on Heat and Mass Transfer of the Cross-flow Liquid Desiccant Regenerator",

abstract = "Liquid desiccant air conditioning (LDAC) system becomes more and more environmentally friendly and efficient than vapor compression cooling system to control air humidity. This paper concentrates on the heat and mass transfer process of cross-flow liquid desiccant regeneration. A cross-flow theoretical model based on finite difference method was established. The LiBr aqueous solution was used as the liquid desiccant. A mass transfer empirical correlation fitted by experimental results was introduced to the model. The software MATLAB was adopted to solve the control equations. The results show the maximum differences of air temperature and humidity ratio reach 3.8 °C and 4.2 g•kg-1 in air outlet, respectively. There exists an optimal NTUm in regenerator based on a certain operation condition.",

keywords = "Cross-flow, Heat, LiBr aqueous solution, Liquid desiccant regenerator, mass transfer",

author = "Yang Li and Zhibo Fu and Xiaohu Yang and Lianying Zhang and Qunli Zhang and Wenju Hu",

year = "2017",

doi = "10.1016/j.proeng.2017.10.212",

language = "英语",

volume = "205",

pages = "2647--2654",

journal = "Procedia Engineering",

issn = "1877-7058",

publisher = "Elsevier Ltd",

note = "10th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2017 ; Conference date: 19-10-2017 Through 22-10-2017",

}

TY - JOUR

T1 - Numerical Study on Heat and Mass Transfer of the Cross-flow Liquid Desiccant Regenerator

AU - Li, Yang

AU - Fu, Zhibo

AU - Yang, Xiaohu

AU - Zhang, Lianying

AU - Zhang, Qunli

AU - Hu, Wenju

PY - 2017

Y1 - 2017

N2 - Liquid desiccant air conditioning (LDAC) system becomes more and more environmentally friendly and efficient than vapor compression cooling system to control air humidity. This paper concentrates on the heat and mass transfer process of cross-flow liquid desiccant regeneration. A cross-flow theoretical model based on finite difference method was established. The LiBr aqueous solution was used as the liquid desiccant. A mass transfer empirical correlation fitted by experimental results was introduced to the model. The software MATLAB was adopted to solve the control equations. The results show the maximum differences of air temperature and humidity ratio reach 3.8 °C and 4.2 g•kg-1 in air outlet, respectively. There exists an optimal NTUm in regenerator based on a certain operation condition.

AB - Liquid desiccant air conditioning (LDAC) system becomes more and more environmentally friendly and efficient than vapor compression cooling system to control air humidity. This paper concentrates on the heat and mass transfer process of cross-flow liquid desiccant regeneration. A cross-flow theoretical model based on finite difference method was established. The LiBr aqueous solution was used as the liquid desiccant. A mass transfer empirical correlation fitted by experimental results was introduced to the model. The software MATLAB was adopted to solve the control equations. The results show the maximum differences of air temperature and humidity ratio reach 3.8 °C and 4.2 g•kg-1 in air outlet, respectively. There exists an optimal NTUm in regenerator based on a certain operation condition.

KW - Cross-flow

KW - Heat

KW - LiBr aqueous solution

KW - Liquid desiccant regenerator

KW - mass transfer

UR - https://www.scopus.com/pages/publications/85033390400

U2 - 10.1016/j.proeng.2017.10.212

DO - 10.1016/j.proeng.2017.10.212

M3 - 会议文章

AN - SCOPUS:85033390400

SN - 1877-7058

VL - 205

SP - 2647

EP - 2654

JO - Procedia Engineering

JF - Procedia Engineering

T2 - 10th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2017

Y2 - 19 October 2017 through 22 October 2017

ER -

Numerical Study on Heat and Mass Transfer of the Cross-flow Liquid Desiccant Regenerator

Abstract

Keywords

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