Link to document:
Status
Electronic Resource
Call number
Publication
GA A15743; Report; November 1981.
Language
Library's review
ABSTRACT:
The objectives of the work being reported were to design, fabricate, and operate a molten salt heat transfer loop in conjunction with a distributed solar concentrator. The work was supported by the Department of Energy and General Atomic Company and monitored by the Jet Propulsion
The collector consists of a fixed mirror solar concentrator with an aperture width of 2.13 m (7 ft) and a length of 22.86 m (75 ft). The heat transfer loop consists of a heated tank, heat-traced piping, and a special pump for fluid circulation. The heat transfer medium is a molten salt marketed under the trade name Hitec.
Startup problems were identified and resolved, and the system generally performed as expected. The system was successfully demonstrated up to a salt temperature of 844 K (1059°F), which is high enough to produce modern steam conditions. The heat collection efficiency of the fixed mirror solar collector was determined to be 30.3% for a test that reached a salt temperature of 812 K (1002°F). This was for a concentration ratio of 34 and a heat receiver without a glass cover and without a solar-selective absorber coating.
The molten salt facility should be useful for conducting future materials corrosion testing and component testing.
The objectives of the work being reported were to design, fabricate, and operate a molten salt heat transfer loop in conjunction with a distributed solar concentrator. The work was supported by the Department of Energy and General Atomic Company and monitored by the Jet Propulsion
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Laboratory.The collector consists of a fixed mirror solar concentrator with an aperture width of 2.13 m (7 ft) and a length of 22.86 m (75 ft). The heat transfer loop consists of a heated tank, heat-traced piping, and a special pump for fluid circulation. The heat transfer medium is a molten salt marketed under the trade name Hitec.
Startup problems were identified and resolved, and the system generally performed as expected. The system was successfully demonstrated up to a salt temperature of 844 K (1059°F), which is high enough to produce modern steam conditions. The heat collection efficiency of the fixed mirror solar collector was determined to be 30.3% for a test that reached a salt temperature of 812 K (1002°F). This was for a concentration ratio of 34 and a heat receiver without a glass cover and without a solar-selective absorber coating.
The molten salt facility should be useful for conducting future materials corrosion testing and component testing.
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