국내 최대 기계 및 로봇 연구정보

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타이틀	Summary of Test Results From a 1 kWe-Class Free-Piston Stirling Power Convertor Integrated With a Pumped NaK Loop
저자	Briggs, Maxwell H.;; Geng, Steven M.;; Pearson, J. Boise;; Godfroy, Thomas J.
Keyword	FISSION;; FREE-PISTON ENGINES;; LIQUID METALS;; LIQUID SODIUM;; SPACECRAFT POWER SUPPLIES;; STIRLING CYCLE;; STIRLING ENGINES;; TECHNOLOGY ASSESSMENT
URL	http://hdl.handle.net/2060/20110003104
보고서번호	NASA/TM-2010-216934
발행년도	2010
출처	NTRS (NASA Technical Report Server)
ABSTRACT	As a step towards development of Stirling power conversion for potential use in Fission Surface Power (FSP) systems, a pair of commercially available 1 kW class free-piston Stirling convertors was modified to operate with a NaK liquid metal pumped loop for thermal energy input. This was the first-ever attempt at powering a free-piston Stirling engine with a pumped liquid metal heat source and is a major FSP project milestone towards demonstrating technical feasibility. The tests included performance mapping the convertors over various hot and cold-end temperatures, piston amplitudes and NaK flow rates;; and transient test conditions to simulate various start-up and fault scenarios. Performance maps of the convertors generated using the pumped NaK loop for thermal input show increases in power output over those measured during baseline testing using electric heating. Transient testing showed that the Stirling convertors can be successfully started in a variety of different scenarios and that the convertors can recover from a variety of fault scenarios.