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

    Research output: Contribution to journalArticlepeer-review

    16 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 languageEnglish
    Pages (from-to)250-257
    Number of pages8
    JournalApplied Thermal Engineering
    Volume96
    DOIs
    Publication statusPublished - 2016 Mar 5

    Bibliographical 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:
    © 2015 Elsevier Ltd

    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

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