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Experimental investigation on the heat and mass transfer between air and liquid desiccant in a cross-flow dehumidifier

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  • Gao, W.Z.
  • Liu, J.H.
  • Cheng, Y.P.
  • Zhang, X.L.

Abstract

Dehumidifier is the core component in a liquid desiccant air-conditioning system, whose efficiency directly affects the whole performance. In this study a cross-flow dehumidifier was established in which LiCl solution and Celdek structured packing were used. Enthalpy efficiency and moisture efficiency were adopted to describe the heat and mass transfer performance of the dehumidifier. Influence of desiccant and air inlet parameters on the dehumidifier performance was experimentally investigated, and efficiency comparison in different air outlet regions was also carried out, as well as influence of packing structure size on dehumidifier performance. The results show that the outlet parameter values of air and solution can be easily gained with enthalpy efficiency and moisture efficiency which was obtained from experimental regression. Efficiency has obvious regional characteristics. By increasing the thickness, width or height simultaneously, better performance of Dehumidifier can be achieved without increasing the pressure loss.

Suggested Citation

  • Gao, W.Z. & Liu, J.H. & Cheng, Y.P. & Zhang, X.L., 2012. "Experimental investigation on the heat and mass transfer between air and liquid desiccant in a cross-flow dehumidifier," Renewable Energy, Elsevier, vol. 37(1), pages 117-123.
    • Handle: RePEc:eee:renene:v:37:y:2012:i:1:p:117-123
    DOI: 10.1016/j.renene.2011.06.006
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    References listed on IDEAS

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    1. Abdul-Wahab, S.A. & Zurigat, Y.H. & Abu-Arabi, M.K., 2004. "Predictions of moisture removal rate and dehumidification effectiveness for structured liquid desiccant air dehumidifier," Energy, Elsevier, vol. 29(1), pages 19-34.
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    Cited by:

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