Design and analysis of a free-piston stirling engine for space nuclear power reactor

Zhiwen Dai; Chenglong Wang; Dalin Zhang; Wenxi Tian; Suizheng Qiu; G.H. Su

doi:https://doi.org/10.1016/j.net.2020.07.011

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자료유형: 학술저널

저자정보: Zhiwen Dai (Xi'an Jiaotong University) Chenglong Wang (Xi'an Jiaotong University) Dalin Zhang (Xi'an Jiaotong University) Wenxi Tian (Xi'an Jiaotong University) Suizheng Qiu (Xi'an Jiaotong University) G.H. Su (Xi'an Jiaotong University)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제53권 제2호

발행연도: 2021.2

수록면: 637 - 646 (10page)

DOI: https://doi.org/10.1016/j.net.2020.07.011

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The free-piston Stirling engine (FPSE) has been widely used in aerospace owing to its advantages of highefficiency, high reliability, and self-starting ability. In this paper, a 20-kW FPSE is proposed by analyzingthe requirements of space nuclear power reactor. A code was developed based on an improved simpleanalysis method to evaluate the performance of the proposed FPSE. The code is benchmarked withexperimental data, and the maximum relative error of the output power is 17.1%. Numerical results showthat the output power is 21 kW, which satisfies the design requirements. The results show that: a)reducing the pressure shell’s thickness can improve the output power significantly; b) the system efficiencyincreases with the wire porosity, while the growth of system efficiency decreases when theporosity is higher than 80%, and system efficiency exhibits a linear relationship with the temperatures ofthe cold and hot sides; c) the system efficiency increases with the compression ratio; the compressionratio increases by 16.7% while the system efficiency increases by 42%. This study can provide valuabletheoretical support for the design and analysis of FPSEs for space nuclear power reactors.

#Space nuclear power reactor #Free-piston #Stirling engine #Improved simple adiabatic analysis #Design and analysis

참고문헌 (23)

참고문헌 신청

Weichao Li / 2019 / Investigation on steam contact condensation injected vertically at low mass flux : Part I pure steam experiment / Int. J. Heat Mass Tran 131:301~312

Weichao Li / 2019 / Investigation on thermal stratification induced by steam-air mixture vertical injection with shallow submergence depth / Prog. Nucl. Energy 115:52~61

Weichao Li / 2019 / Experimental investigation on thermal stratification induced by steam direct contact condensation with non-condensable gas / Appl. Therm. Eng 154:628~636

Zhiwen Dai / 2019 / Thermoelectric characteristics analysis of thermionic space nuclear power reactor / International Journal of Energy Research 44(2):855~868

G. Dochat / 1993 / SPDE/SPRE Final Summary Report

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