Experimental study for a double glazed forced-convection solar collector/regenerator for open-cycle absorption cooling system

Book · Tue Dec 31 04:00:00 EST 1996

OSTI ID:435584

Yang, R ^[1]; Wang, P L ^[2]

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1. National Sun Yat-Sen Univ., Kaohsiung (Taiwan, Province of China). Inst. of Mechanical Engineering
2. Chung-Shan Inst. of Science and Technology, Lungtan (Taiwan, Province of China). Materials Research and Development Center

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{degree} slope is located at Kaohsiung, Taiwan at 120{degree}18minuteE longitude and 22{degree}34minuteN latitude. The size of the collector is 1m wide and 7m long. 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%. In order to raise the system performance, a double-glazed collector/regenerator is constructed such that air can be pre-heated in the upper channel flow. The pre-heated air is then conducted into the lower channel where it contacts with the film flow of solar heated lithium-chloride solutions and regenerates the solution by carrying out the evaporated water vapor. Since the preheated air has lower relative humidity ratio, the regeneration driving potential is increased. The present study shows that the best day-average efficiency can reach 20% 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.

• OSTI ID: 435584
• Report Number(s): CONF-960805--
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ABSORPTION REFRIGERATION CYCLE
DESIGN
DOUBLE GLAZING
EXPERIMENTAL DATA
LITHIUM CHLORIDES
PERFORMANCE
SOLAR AIR CONDITIONERS
SOLAR COLLECTORS
SOLAR REGENERATORS