The design-point dehumidification performance (i.e., at ARI conditions) of a rotary dehumidifier wheel depends on its rotational speed, the sorption properties of the desiccant, the heat and mass transfer characteristics of the matrix, and the size of the dehumidifier. However, the real operating conditions of a rotary dehumidifier can vary significantly from the design point, given the large variations in operating conditions (i.e., the outdoor, indoor, and regeneration temperatures and humidities) for various locations during different times of the year. This paper investigates the variability of the dehumidification performance of a rotary dehumidifier and its dependence on operating conditions. Also, the effect of the operating conditions on the optimum rotational speed of a rotary dehumidifier, where the performance of a rotary dehumidifier is optimized, is described.

1.
Belding, W. A., et al., 1988, “Development of Desiccant Materials for Cooling Systems Applications—Phase I Final Report,” Gas Research Institute Report GRI-88/0343.
2.
Charoensupaya
D.
, and
Worek
W. M.
,
1988
, “
Parametric Study and Optimization of an Open-Cycle Desiccant Cooling System
,”
Energy—The International Journal
, Vol.
13
, No.
9
, pp.
739
747
.
3.
Collier, R. K., Jr., 1988, “Advanced Desiccant Materials Assessment—Phase II,” Gas Research Institute Report GRI-88/0125.
4.
Collier, R. K., Jr., Cale, T. S., and Lavan, Z., 1986, “Advanced Desiccant Materials Assessment,” Gas Research Institute Report GRI-86/0182.
5.
Collier
R. K.
,
Novosel
D.
, and
Worek
W. M.
,
1990
, “
Simulation of Open-Cycle Desiccant Cooling System Performance
,”
ASHRAE Transactions
, Vol.
96
, Pt. 1, pp.
1262
1268
.
6.
Dini
S.
, and
Worek
W. M.
,
1986
, “
Sorption Equilibrium of a Solid Desiccant Felt and the Effect of Sorption Properties on a Cooled-Bed Desiccant Cooling System
,”
Journal of Heat Recovery Systems
, Vol.
6
, No.
2
, pp.
151
167
.
7.
Ruthven, D. M., 1984, Principles of Adsorption and Adsorption Processes, Wiley Interscience, New York, NY.
8.
Zheng
W.
, and
Worek
W. M.
,
1993
, “
Numerical Simulation of Combined Heat and Mass Transfer Processes in a Rotary Dehumidifier
,”
Numerical Heat Transfer
, Part A, Vol.
23
, pp.
211
232
.
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