Performance Evaluation of a Desiccant Dehumidifier using Different Desiccants

Dehumidifier, Hybrid desiccant cooling system, Lithium chloride and Calcium chloride, Cascade ring, Random packing

Authors

  • Ms. Prachi Rai Department of Mechanical Engineering IIT (BHU) Varanasi, India
  • Dr. S.K. Shukla Mechanical Engineering Department, Indian Institute of Technology (BHU), Varanasi, India

DOI:

https://doi.org/10.13052/dgaej2156-3306.2833

Keywords:

Dehumidifier, Hybrid desiccant cooling system, Lithium chloride and Calcium chloride, Cascade ring, Random packing

Abstract

This article reports an analysis of different empirical dehumidification
effectiveness correlations for packed bed columns using two desiccant
solutions viz. lithium chloride and calcium chloride. The analysis shows
wide variations in effectiveness values ranging from 10% to 50% or more,
with higher deviations occurring for lower ratios of liquid to gas flow
rates. It is also reported that for same ratio of liquid to Gas flow rate, the
dehumidification effectiveness is more for the desiccant system using LiCl.
Design variables found to have the greatest impact on the performance
of the dehumidifier, are desiccant concentration (slope = 2.7), desiccant
temperature (slope = –1.4), air flow rate (slope = –0.9), and air humidity
ratio (slope = 2.5).

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Author Biographies

Ms. Prachi Rai, Department of Mechanical Engineering IIT (BHU) Varanasi, India

Ms. Prachi Rai is a dual degree Master student, currently working in
the Department of Mechanical Engineering IIT (BHU) Varanasi, India. Her
areas of interest are Modeling of HVAC system, Life Cycle Cost Analysis
etc.

Dr. S.K. Shukla, Mechanical Engineering Department, Indian Institute of Technology (BHU), Varanasi, India

Dr. S.K. Shukla is working as Associate Professor in Mechanical
Engineering Department, Indian Institute of Technology (BHU), Varanasi,
India. He has been post graduated and completed his Ph.D. from IIT Delhi.
His areas of interest are Thermal Engineering, Heat and Mass Transfer
Analysis in Solar Thermal Systems and Design of Renewable Energy
Systems, Modeling of HVAC systems. E-mail: shuskla@gmail.com. Tele
fax; +91-542-6702825.

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Published

2013-06-12

How to Cite

Rai, M. P. ., & Shukla, D. S. . (2013). Performance Evaluation of a Desiccant Dehumidifier using Different Desiccants: Dehumidifier, Hybrid desiccant cooling system, Lithium chloride and Calcium chloride, Cascade ring, Random packing. Distributed Generation &Amp; Alternative Energy Journal, 28(3), 53–73. https://doi.org/10.13052/dgaej2156-3306.2833

Issue

2013: Vol 28 Iss 3

Section

Articles