Desiccant cooling systems, considered one of the sustainable air conditioning technologies, have been attractive for researchers to be studied for many years. In this paper, the modeling and simulation of a packed tower liquid dehumidifier and regenerator as well as a solid desiccant wheel are presented. The simplified equations that predict the air conditions after passing these systems are developed. This approach is quick and does not need a lengthy computer calculation and large memory capacity. Liquid and solid desiccant cooling cycles are presented and using this approach, the performance of these systems is calculated for weather data of a reference year and different climates in the United States. These systems are compared regarding their energy and water consumption based on this new approach. The first results show that liquid desiccant systems, without technology improvements, are relatively large but with low capacities and have lower coefficients of performance than solid desiccant cooling systems.

References

References
1.
Pennington
,
N. A.
, 1955, “
Humidity Changer for Air Conditioning
,” U.S. Patent No. 2,700,537.
2.
Banks
,
P. J.
, 1985, “
Prediction of Heat and Mass Regenerator Performance Using Nonlinear Analogy Method: Part 1—Basis
,”
ASME J. Heat Transfer
,
107
, pp.
222
229
.
3.
Maclaine-Cross
,
I. L.
, and
Banks
,
P. J.
, 1972, “
Coupled Heat and Mass Transfer in Regenerators—Prediction Using an Analogy with Heat Transfer
,”
Int. J. Heat Mass Transfer
,
15
, pp.
1225
1242
.
4.
Zheng
,
W.
, and
Worek
,
W. M.
, 1993, “
Numerical Simulation of Combined Heat and Mass Transfer Processes in a Rotary Dehumidifier
,”
Numer. Heat Transfer, Part A
,
23
, pp.
211
232
.
5.
Collier
,
R. K.
, and
Cohen
,
B. M.
, 1991, “
An Analytical Examination of Methods for Improving the Performance of Desiccant Cooling Systems
,”
ASME J. Sol. Energy Eng.
,
113
, pp.
157
163
.
6.
Mei
,
L.
, and
Dai
,
Y. J.
, 2008, “
A Technical Review on Use of Liquid-Desiccant Dehumidification for Air-Conditioning Application
,”
Renewable Sustainable Energy Rev.
,
12
, pp.
662
689
.
7.
Ge
,
T. S.
,
Li
,
Y.
,
Wang
,
R. Z.
, and
Dai
,
Y. J.
, 2008, “
A Review of the Mathematical Models for Predicting Rotary Desiccant Wheel
,”
Renewable Sustainable Energy Rev.
,
12
, pp.
1485
1528
.
8.
Esfandiari Nia
,
F.
,
van Paassen
,
D.
, and
Saidi
,
M. H.
, 2006, “
Modeling and Simulation of Desiccant Wheels
,”
Energy Build.
,
38
,
1230
1239
.
10.
Oberg
,
V.
, and
Goswami
,
D. Y.
, 1998, “
Experimental Study of the Heat and Mass Transfer in a Packed Bed Liquid Desiccant Air Dehumidifier
,”
ASME J. Sol. Energy Eng.
,
120
, pp.
289
297
.
11.
Fumo
,
N.
, and
Goswami
,
D. Y.
, 2002, “
Study of an Aqueous Lithium Chloride Desiccant System: Air Dehumidification and Desiccant Regeneration
,”
Sol. Energy
,
72
, pp.
351
361
.
12.
Gandhidasan
,
P.
,
Rifat Ullah
,
M.
, and
Kettleborough
,
C. F.
, 1987, “
Analysis of Heat and Mass Transfer Between a Desiccant-Air System in a Packed Tower
,”
ASME J. Sol. Energy Eng.
,
109
, pp.
89
93
.
13.
ASHRAE
, 1993,
Handbook of Fundamentals
,
American Society of Heating, Refrigerating and Air-Conditioning Engineers
,
Atlanta, GA
.
You do not currently have access to this content.