An analysis of the performance of a packed bed liquid desiccant dehumidifier is presented. The enthalpy and material balance equations written over a differential height of the bed incorporate the effect of the heat of dilution of the desiccant liquid, the liquid-air interface temperature and the fraction of the evolved heat that is accounted for in the air stream. Numerical results obtained are discussed in terms of the physical and operating parameters of the system. © 1991.

M. Sadasivam

Arcot R. Balakrishnan

DESICCATION(DEHUMIDIFIERS

Thermal effects

AIR CONDITIONING - THERMAL EFFECTS

Heat transfer

MASS TRANSFER

THERMAL EFFECTS - MATHEMATICAL MODELS

Thermodynamics

Heat of dilution

LIQUID DESICCANT DEHUMIDIFIERS

PACKING HEIGHT

CHEMICAL EQUIPMENT

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Analysis of thermal effects in packed bed liquid desiccant dehumidifiers

Chemical Engineering and Processing

This paper describes an experimental study to determine £, a parameter defined in an earlier analytical study as the fraction of the heat of dilution in packed bed liquid desiccant dehumidifiers that goes into the air stream. ξ was determined at various operating conditions in a packed bed using calcium chloride solution as the liquid desiccant in countercurrent flow with air. ξ has been correlated in terms of L/G ratios, gas Reynolds number, the ambient number, and a new parameter, the desiccant number. An extension of the ε-NTU model incorporating ξ is presented, and comparison with data, both present and those reported in the literature, show good agreement. © 1994, American Chemical Society. All rights reserved.

Industrial and Engineering Chemistry Research

Experimental Investigations on the Thermal Effects in Packed Bed Liquid Desiccant Dehumidifiers

Solar Energy

Performance studies for an experimental solar open-cycle liquid desiccant air dehumidification system

Heat Recovery Systems and CHP

Analysis of an integrated absorption/liquid desiccant air conditioning system

Chemical Engineering and Processing: Process Intensification

Analysis of liquid desiccant desorption by ambient air at low temperatures

An effectiveness model of liquid-desiccant system heat/mass exchangers

Journal of Solar Energy Engineering

Analysis of Heat and Mass Transfer Between a Desiccant-Air System in a Packed Tower

Journal	Chemical Engineering and Processing
ISSN	02552701
Open Access	No