Molten nitrate salt solar central receiver of low cycle fatigue

Details Molten nitrate salt solar central receiver of low cycle fatigue Molten nitrate salt solar central receiver of low cycle fatigue

1996-09-27

1999-01-26

Jones, Larry

Stoves and furnaces

Solar heat collector

Energy concentrator with support for material heated

126651, 126655, 126663, 126677, F24J 202

Patent

active

058628002

ABSTRACT:
This invention provides a molten salt, solar central smooth tube receiver that is able to effectively absorb a peak solar flux of 1.42 MW/M.sup.2 by constructing the receiver from low cycle fatigue 625 alloy. Although higher flux levels are attainable for a smooth tube receiver by reducing the tube diameter to increase the salt's heat transfer coefficient, the receiver's size is optimized at this flux level to minimize capital and performance costs. Analogously, material provides substantial performance and capital cost improvements for receivers constructed with internally enhanced film coefficient tubes. The receiver's cost is minimized by utilizing autogenously welded and drawn tubing with the weld located at the tube's neutral axis to provide minimal strain at the weld.

REFERENCES:
patent: 4512336 (1985-04-01), Wiener
patent: 4525620 (1985-06-01), Deverell et al.
patent: 4714498 (1987-12-01), Khare
patent: 4765956 (1988-08-01), Smith et al.
patent: 5417052 (1995-05-01), Bharathan et al.
SAE AMS 5879A, Issued Jan. 1991, Revised Jan. 1996; Nickel Alloy, Corrosion and Heat Resistant, Sheet, Strip, and Foil 62Ni--21.5Cr--9.0Mo--3.7Cb, Cold Rolled and Annealed from Inco Alloys Tech.
Inco Alloys International technical information on INCONEL alloy 625LCF, Publication No. IAI-83-L.
High Temperature Optical Properties of Alloys for Central-Solar Receiver Solar Power Systems, Optical Sciences Center University of Arizona, Final Report to Doe Under Contract E(29-2)-3673 Apr. 1978, P. 9, H. S. Gurev, K. D. Masterson.

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