Combined heat and mass transfer analysis for LiCl dehumidification process in a plate type heat exchanger

Jae Hyun Lee; Gu Hyun Ro; Yong Tae Kang; Young Soo Chang; Seon Chang Kim; Young Lyoul Kim

doi:10.1016/j.applthermaleng.2015.11.040

Combined heat and mass transfer analysis for LiCl dehumidification process in a plate type heat exchanger

Jae Hyun Lee, Gu Hyun Ro, Yong Tae Kang, Young Soo Chang, Seon Chang Kim, Young Lyoul Kim

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

Liquid desiccant systems have been extensively drawn attention due to its benefits of reducing the energy consumption and being environmental friendly technology. The objectives of this study are to analyze the combined heat and mass transfer characteristics of LiCl (lithium chloride) aqueous solution for the liquid desiccant system of plate type dehumidifier and to compare the analytical model with the experimental results. The plate surface is treated with a hydrophilic coating to enhance the wettability of the solution distribution and to decrease the solution scattering on the plate surface. It can be seen that the heat transfer coefficient and the mass transfer coefficient range from 0.25 to 0.47 kW/m²K and from 4 to 12 × 10^-7 m/s, respectively. It is concluded that the air velocity is the most significant element for enhancing the performance during the dehumidification process. Finally, Nusselt and Sherwood number correlations are developed with the error bands of ±25%, respectively.

Original language	English
Pages (from-to)	250-257
Number of pages	8
Journal	Applied Thermal Engineering
Volume	96
DOIs	https://doi.org/10.1016/j.applthermaleng.2015.11.040
Publication status	Published - 2016 Mar 5

Keywords

Combined heat and mass transfer
Liquid desiccant
Lithium chloride
Plate type dehumidifier

ASJC Scopus subject areas

Energy Engineering and Power Technology
Industrial and Manufacturing Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.applthermaleng.2015.11.040

Cite this

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title = "Combined heat and mass transfer analysis for LiCl dehumidification process in a plate type heat exchanger",

abstract = "Liquid desiccant systems have been extensively drawn attention due to its benefits of reducing the energy consumption and being environmental friendly technology. The objectives of this study are to analyze the combined heat and mass transfer characteristics of LiCl (lithium chloride) aqueous solution for the liquid desiccant system of plate type dehumidifier and to compare the analytical model with the experimental results. The plate surface is treated with a hydrophilic coating to enhance the wettability of the solution distribution and to decrease the solution scattering on the plate surface. It can be seen that the heat transfer coefficient and the mass transfer coefficient range from 0.25 to 0.47 kW/m2K and from 4 to 12 × 10-7 m/s, respectively. It is concluded that the air velocity is the most significant element for enhancing the performance during the dehumidification process. Finally, Nusselt and Sherwood number correlations are developed with the error bands of ±25%, respectively.",

keywords = "Combined heat and mass transfer, Liquid desiccant, Lithium chloride, Plate type dehumidifier",

author = "Lee, {Jae Hyun} and Ro, {Gu Hyun} and Kang, {Yong Tae} and Chang, {Young Soo} and Kim, {Seon Chang} and Kim, {Young Lyoul}",

note = "Funding Information: This work was supported by the Industrial Strategic technology development program ( 10042562 , Development of heat exchanger type zero carryover liquid dehumidification/regeneration technology) funded by the Ministry of Knowledge Economy (MKE, Korea). Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd",

year = "2016",

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doi = "10.1016/j.applthermaleng.2015.11.040",

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TY - JOUR

T1 - Combined heat and mass transfer analysis for LiCl dehumidification process in a plate type heat exchanger

AU - Lee, Jae Hyun

AU - Ro, Gu Hyun

AU - Kang, Yong Tae

AU - Chang, Young Soo

AU - Kim, Seon Chang

AU - Kim, Young Lyoul

N1 - Funding Information: This work was supported by the Industrial Strategic technology development program ( 10042562 , Development of heat exchanger type zero carryover liquid dehumidification/regeneration technology) funded by the Ministry of Knowledge Economy (MKE, Korea). Publisher Copyright: © 2015 Elsevier Ltd

PY - 2016/3/5

Y1 - 2016/3/5

N2 - Liquid desiccant systems have been extensively drawn attention due to its benefits of reducing the energy consumption and being environmental friendly technology. The objectives of this study are to analyze the combined heat and mass transfer characteristics of LiCl (lithium chloride) aqueous solution for the liquid desiccant system of plate type dehumidifier and to compare the analytical model with the experimental results. The plate surface is treated with a hydrophilic coating to enhance the wettability of the solution distribution and to decrease the solution scattering on the plate surface. It can be seen that the heat transfer coefficient and the mass transfer coefficient range from 0.25 to 0.47 kW/m2K and from 4 to 12 × 10-7 m/s, respectively. It is concluded that the air velocity is the most significant element for enhancing the performance during the dehumidification process. Finally, Nusselt and Sherwood number correlations are developed with the error bands of ±25%, respectively.

AB - Liquid desiccant systems have been extensively drawn attention due to its benefits of reducing the energy consumption and being environmental friendly technology. The objectives of this study are to analyze the combined heat and mass transfer characteristics of LiCl (lithium chloride) aqueous solution for the liquid desiccant system of plate type dehumidifier and to compare the analytical model with the experimental results. The plate surface is treated with a hydrophilic coating to enhance the wettability of the solution distribution and to decrease the solution scattering on the plate surface. It can be seen that the heat transfer coefficient and the mass transfer coefficient range from 0.25 to 0.47 kW/m2K and from 4 to 12 × 10-7 m/s, respectively. It is concluded that the air velocity is the most significant element for enhancing the performance during the dehumidification process. Finally, Nusselt and Sherwood number correlations are developed with the error bands of ±25%, respectively.

KW - Combined heat and mass transfer

KW - Liquid desiccant

KW - Lithium chloride

KW - Plate type dehumidifier

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DO - 10.1016/j.applthermaleng.2015.11.040

M3 - Article

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SN - 1359-4311

VL - 96

SP - 250

EP - 257

JO - Applied Thermal Engineering

JF - Applied Thermal Engineering

ER -

Combined heat and mass transfer analysis for LiCl dehumidification process in a plate type heat exchanger

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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