Experimental study of a double-glazed forced-convection solar collector/regenerator for absorption solar cooling is presented. The south facing experimental solar collector/ regenerator with 10 deg slope is located at Kaohsiung, Taiwan at 120°18′ E longitude and 22°34′ N latitude. The size of the collector is 1 m wide and 7 m long with an effective regeneration area of 0.9 m by 6 m. Previous study for single-glazed forced-convection solar collector/regenerator operated at the same location has shown to have a best day-average efficiency of 17 percent. In order to raise the system performance, a double-glazed collector/regenerator is constructed such that air can be preheated in the upper channel flow. The preheated air is then conducted into the lower channel where it contacts with the film flow of solar heated lithium-chloride solution and regenerates the solution by carrying out the evaporated water vapor. The preheated air has lower relative humidity but the same humidity ratio since it is sensibly heated. Therefore, the regeneration driving potential is increased. The present study shows that the best day-average efficiency can reach 20 percent which increases the feasibility of the open-cycle absorption solar cooling system. Effects of controlling parameters on the collector/regenerator performance are studied, and heat and mass transfer correlations are also presented for design purposes.

1.
ASHRAE, 1989, “Psychrometrics,” Fundamentals Handbook, SI Ed., American Society of Heating, Refrigerating and Air-Conditioning Engineers, Atlanta, GA, pp. 6.4–6.9.
2.
Duffie, J. A., and Beckman, W. A., 1991, Solar Engineering of Thermal Processes, 2nd ed., John Wiley and Sons, New York, pp. 174.
3.
Gandhidasan
P.
,
1982
, “
Simple Analysis of a Forced Flow Solar Regeneration System
,”
AIAA J. Energy
, Vol.
6
, No.
6
, pp.
436
437
.
4.
Gandhidasan
P.
,
1983
, “
Thermal Performance Predictions and Sensitivity Analysis for a Parallel Flow Solar Regenerator
,”
ASME Journal of Solar Energy Engineering
, Vol.
105
, pp.
224
228
.
5.
Hawlader
M. N. A.
,
Stack
A. P.
, and
Wood
B. D.
,
1992
, “
Performance Evaluation of Glazed and Unglazed Collectors/Regenerators in a Liquid Absorbent Open-Cycle Absorption Cooling System
,”
Int. J. Solar Energy
, Vol.
11
, pp.
135
164
.
6.
Ji, L. J., and Wood, B. D., 1993, “Performance Enhancement Study of Solar Collector/Regenerator for Open-Cycle Liquid Desiccant Regeneration,” ASES Proceedings of the 1993 Annual Conference, pp. 351–356.
7.
Kakabaev
A.
, and
Golaev
M.
,
1971
, “
Glazed Flat Surface as a Solution Regenerator for Use in an Absorption Solar Cooling System
,”
Geliotekhnika
, Vol.
7
, No.
4
, pp.
44
49
.
8.
Kakabaev
A.
, and
Khandurdyev
A.
,
1969
, “
Absorption Solar Refrigeration Unit with Open Regeneration of Solution
,”
Geliotekhnika
, Vol.
5
, No.
4
, pp.
28
32
.
9.
Kakabaev
A.
,
Khandurdyev
A.
,
Klyshchaeva
O.
, and
Kurbanov
N.
,
1976
, “
A Large-Scale Solar Air-Conditioning Pilot Plant and Its Test Results
,”
Int. Chem. Engng.
, Vol.
16
, No.
1
, pp.
60
64
.
10.
Kaushik
S. C.
,
Kumar
Y.
, and
Kaudinya
J. V.
,
1991
, “
Feasibility of an Open Cycle Absorption Solar Cooling System With Solution Storage for Continuous Operation
,”
Int. J. Amb. Energy
, Vol.
12
, No.
2
, pp.
101
106
.
11.
Kumar
P.
,
Devotta
S.
, and
Holland
F. A.
,
1985
, “
Experimental Heat and Mass Transfer Studies on the Solar Generator of an Open Cycle Absorption Cooler
,”
Trans. AIChE, Chem. Eng. Res. Des.
, Vol.
63
, pp.
139
148
.
12.
Moffat
R. J.
,
1982
, “
Contributions to the Theory of Single-Sample Uncertainty Analysis
,”
ASME JOURNAL OF FLUIDS ENGINEERING
, Vol.
104
, pp.
250
258
.
13.
Nelson
D. J.
, and
Wood
B. D.
,
1989
, “
Combined Heat and Mass Transfer Natural Convection between Vertical Plates
,”
Int. J. Heat Mass Transfer
, Vol.
32
, No.
9
, pp.
1779
1787
.
14.
Nelson
D. J.
, and
Wood
B. D.
,
1990
, “
Evaporation Rate Model for a Natural Convection Glazed Collector/Regenerator
,”
ASME JOURNAL OF SOLAR ENERGY ENGINEERING
, Vol.
112
, pp.
51
57
.
15.
Siebe, D. A., 1986, “Evaluation of Air-Conditioning Systems Utilizing Liquid Absorbents Regenerated by Solar Energy,” Ph. D. dissertation, Arizona State University, Tempe, AZ.
16.
Uemura, A., 1967, “Studies on the Lithium Chloride-Water Absorption Refrigerating Machine,” Technology Reports of the Kansai University, Vol. 9, pp. 71–88.
17.
Yang, R., 1987, “Heat and Mass Transfer in Laminar Wavy Film Absorption with the Presence of Non-absorbable Gases,” Ph.D. dissertation, Arizona State University, Tempe, AZ.
18.
Yang
R.
, and
Wang
P. L.
,
1994
a, “
The Optimum Glazing Height of a Solar Collector/Regenerator for the Open-Cycle Absorption Cooling
,”
Energy
, Vol.
19
, No.
9
, pp.
925
931
.
19.
Yang
R.
, and
Wang
P. L.
,
1994
b, “
Experimental Study of a Forced Convection Solar Collector/Regenerator for Open-Cycle Absorption Cooling
,”
ASME JOURNAL OF SOLAR ENERGY ENGINEERING
, Vol.
116
, pp.
194
199
.
20.
Yang
R.
, and
Wang
P. L.
,
1995
a, “
Experimental Study of a Glazed Solar Collector/Regenerator Operated under a Humid Climate
,”
Int. J. Solar Energy
, Vol.
16
, pp.
185
201
.
21.
Yang
R.
, and
Wang
P. L.
,
1995
b, “
The Effect of Heat Recovery on the Performance of a Glazed Solar Collector/Regenerator
,”
Solar Energy
, Vol.
54
, No.
1
, pp.
19
24
.
22.
Yang
R.
, and
Yan
W. J.
,
1992
, “
Simulation Study for an Open-Cycle Absorption Solar-Cooling System Operated in a Humid Area
,”
Energy
, Vol.
17
, No.
7
, pp.
649
655
.
This content is only available via PDF.
You do not currently have access to this content.