국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	800 Hours of Operational Experience From a 2 kWe Solar Dynamic System
저자	Richard K. Shaltens and Lee S. Mason
Keyword	Solar power; Solar dynamic; Brayton cycle; System testing
URL	http://gltrs.grc.nasa.gov/reports/1999/TM-1999-208840.pdf
보고서번호	NASA TM-1999-208840
발행년도	1999
출처	NASA Glenn Research Center
ABSTRACT	From December 1994 to September 1998, testing with a 2 kWe Solar Dynamic power system resulted in 33 individual tests, 886 hours of solar heating, and 783 hours of power generation. Power generation ranged from 400 watts to over 2 kWe, and SD system efficiencies have been measured up to 17 per cent, during simulated low-Earth orbit operation. Further, the turbo-alternator-compressors successfully completed 100 start/stops on foil bearings. Operation was conducted in a large thermal/vacuum facility with a simulated Sun at the NASA Lewis Research Center. The Solar Dynamic system featured a closed Brayton conversion unit integrated with a solar heat receiver, which included thermal energy storage for continuous power output through a typical low-Earth orbit. Two power conversion units and three alternator configurations were used during testing. This paper will review the test program, provide operational and performance data, and review a number of technology issues.