THERMAL SCIENCE

International Scientific Journal

Bhushan Behede

,

Siddharth Chakrabarti

,

Uday Wankhede

DEVELOPMENT OF ROTARY DEHUMIDIFIER WITH SILICA-GEL-BASED COMPOSITE DESICCANT

ABSTRACT
The desiccant dehumidification system key component, the desiccant wheel, can perform effectively using composite desiccant materials. Evaluation of the desiccant wheel performance using composite desiccant material is the primary goal of this study. Authors have compared the performance of two desiccant wheels: one is packed with traditional silica-gel, and the other is a composite of silica-gel and calcium chloride in a ratio of 3:2 by weight. A rotary wheel is developed with rectangular channels parallel to the wheel axis. The novelty of this research lies in the improved design of the desiccant wheel. Unlike other techniques involving pressure losses and ineffective space utilization, this design offers better space utilization and fewer pressure losses. In addition, wheel fabrication is less costly and easily reusable with other desiccants. Three performance indicators were evaluated through experimentation: dehumidification capability, moisture removal capacity, and dehumidification coefficient of performance. Results show that the parallel channel desiccant wheel achieves 25% higher dehumidification capability and 55% greater moisture removal capacity. The specific humidity of the air is reduced by 35% using the composite desiccant wheel. Comparing the composite desiccant to traditional silica-gel, its dehumidification coefficient of performance is 40% higher.
KEYWORDS
desiccant wheel, composite desiccant, dehumidification, adsorption
PAPER SUBMITTED: 2023-10-16
PAPER REVISED: 2023-12-09
PAPER ACCEPTED: 2023-12-25
PUBLISHED ONLINE: 2024-08-18
DOI REFERENCE: https://doi.org/10.2298/TSCI231016174B
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2024, VOLUME 28, ISSUE Issue 5, PAGES [4223 - 4233]
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Development of rotary dehumidifier with silica-gel-based composite desiccant

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence