• Home page
  • Publications

  • Microstructure and sorption performance of cons...

IIR document

Microstructure and sorption performance of consolidated composites impregnated with LiCl.

Author(s) : ZHENG X., WANG R.

Type of article: Article, IJR article

Summary

Desiccant materials play a crucial role in the whole performance of novel desiccant coated heat exchanger based systems which can handle sensible and latent loads simultaneously and separately within one single component. To improve sorption performance of widely utilized coated desiccant, i.e., silica gel, this paper introduces a new type of consolidated composite desiccant, by mixing silica gel with expanded natural graphite treated with sulfuric acid (ENG-TSA) and impregnating with LiCl. Consolidated samples with different densities of ENG-TSA were developed. Microstructure, sorption kinetics and sorption isotherms were investigated and compared with loose parent and composite silica gels. Results showed that both ENG-TSA and LiCl had negative influence on surface areas and pore volumes of consolidated composites. With proper choice of the density of ENG-TSA, both dynamic water uptake quantities and sorption rate coefficients of consolidated composites can be greatly enhanced than those of parent and composite silica gels. Calculated theoretical water uptakes for consolidated composites were approx. 20% less than those of composite silica gel, while measured water isotherms showed that consolidated composites possesses better adsorption capacity than composite silica gel. Fitting equations were developed based on the Polanyi theory for further system modeling.

Available documents

Format PDF

Pages: 452-458

Available

  • Public price

    15 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Microstructure and sorption performance of consolidated composites impregnated with LiCl.
  • Record ID : 30025417
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 98
  • Publication date: 2019/02
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2018.11.031

Links


See other articles in this issue (51)
See the source