Light-weight heat pipe wall elements that incorporate a thermal storage sub assembly within the vapor space are being developed as part of the Organic Rankine Cycle Solar Dynamic Power System (ORC-SDPS) receiver for the space station application. The operating temperature of the heat pipe elements is in the 770 to 810 K range with a design power throughput of 4.8 kW per pipe. The total heat pipe length is 1.9 M. The Rankine cycle boiler heat transfer surfaces are positioned within the heat pipe vapor space, providing a relatively constant temperature input to the vaporizer. The heat pipe design employs axial arteries and distribution wicked thermal storage units with potassium as the containment tube and screen material. Performance predictions for this configuration have been conducted and the design characterized as a function of artery geometry, distribution wick thickness, porosity, pore size, and permeability. Details of the analysis and of fabrication and assembly procedures are presented.
An integrated heat pipe-thermal storage design for a solar receiver
Eine integrierte Waermerohr-Waermespeicher-Anordnung fuer einen Solarreceiver
1986
7 Seiten, 8 Bilder, 2 Quellen
Aufsatz (Konferenz)
Englisch
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