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Solar dynamic power module designStudies have shown that use of solar dynamic (SD) power for the growth eras of the Space Station Freedom program will result in life cycle cost savings when compared to power supplied by photovoltaic sources. In the SD power module, a concentrator collects and focuses solar energy into a heat receiver which has integral thermal energy storage. A power conversion unit (PCU) based on the closed Brayton thermodynamic cycle removes thermal energy from the receiver and converts that energy to electrical energy. Since the closed Brayton cycle is a single phase gas cycle, the conversion hardware (heat exchangers, turbine, compressor, etc.) can be designed for operation in low earth orbit, and tested with confidence in test facilities on earth before launch into space. The concentrator subassemblies will be aligned and the receiver/PCU/radiator combination completely assembled and charged with gas and cooling liquid on earth before launch to, and assembly on orbit.
Document ID
Document Type
Conference Paper
Secunde, Richard R.
(NASA Lewis Research Center Cleveland, OH, United States)
Labus, Thomas L.
(NASA Lewis Research Center Cleveland, OH, United States)
Lovely, Ronald G.
(Rockwell International Corp. Canoga Park, CA., United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1989
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
NAS 1.15:102055
Meeting Information
Intersociety Energy Conversion Engineering Conference(Washington, DC)
Accession Number
Funding Number(s)
PROJECT: RTOP 474-52-10
Distribution Limits
Work of the US Gov. Public Use Permitted.
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