Review on substrate of solid desiccant dehumidification system

X.N. Wu, T.S. Ge, Y.J. Dai and R.Z. Wang

Renewable and Sustainable Energy Reviews, 2018, vol. 82, issue P3, 3236-3249

Abstract: Desiccant wheel dehumidification air conditioning system makes full use of the principle of desiccant dehumidification and evaporative cooling. Besides desiccant material, the substrate also plays an important role in improving the dehumidification performance of a rotary desiccant wheel. The objective of this paper is to present the state of the art of substrate, and then provide guidelines for the choice and further research work of substrate. It is found that the substrate of a rotary desiccant wheel usually is porous ceramic fiber paper or glass fiber paper. To improve the dehumidification capacity of rotary desiccant wheel dehumidification system, substrate with high porosity and high thermal conductivity should be selected. Taking into account both dehumidification capacity and pressure drop, sinusoidal air channel is a good choice for rotary desiccant wheel. The review of non-rotary solid desiccant dehumidification system reveals that substrate plays an important role in dehumidification processing and porous fiber paper is the best choice for substrate of rotary desiccant wheel. Short service life and poor adsorption performance are the main drawbacks of existing desiccant wheels. The match for substrates and desiccant materials has not been understood deeply. In the future, revealing the nature of the effect of substrate on the dehumidification performance may be the main work to fill in these blanks.

Keywords: Substrate; Material; Shape; Desiccant wheel; Performance (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (11)

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DOI: 10.1016/j.rser.2017.10.021

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