• Title/Summary/Keyword: Fuel cycle

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Optimal Design of Fuel-Rich Gas Generator for Liquid Rocket Engine (액체로켓의 농후 가스발생기 최적설계)

  • Kwon, Sun-Tak;Lee, Chang-Jin
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.32 no.5
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    • pp.91-96
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    • 2004

  • An optimal design of the gas generator for Liquid Rocket Engine (LRE) was conducted. A fuel-rich gas generator in open cycle turbopump system was designed for 10ton in thrust with RP-1/LOx propellant. The optimal design was done for maximizing specific impulse of thrust chamber with constraints of combustion temperature and for matching the power requirement of turbopump system. Design variables are total mass flow rate to gas generator, O/F ratio in gas generator, turbine injection angle, partial admission ratio, and turbine rotational speed. Results of optimal design provide length, diameter, and contraction ratio of gas generator. And the operational condition predicted by design code with resulting configuration was found to maximize the objective function and to meet the design constraints. The results of optimal design will be tested and verified with combustion experiments.

  • https://doi.org/10.5139/JKSAS.2004.32.5.091 인용 PDF KSCI

Unsteady Performance Analysis of a Simple Shaft Gas Turbine Cycle (단순 가스터빈 사이클 과도 성능해석)

  • Kim, Soo-Yong;Soudarev, B.
    • 연구논문집
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    • s.30
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    • pp.5-13
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    • 2000

  • The computation scheme of simulating gas turbine transient behavior was developed. The basic principles of this scheme and main input data required are described. Calculation results are presented in terms of whole operating regime of the cycle. The influence of main initial parameters such as starting engine power, moment of inertia of the rotor, fuel supplying schedule etc. on performance characteristics of has turbine during transient operation is studied In addition, bleeding air influence on transient behavior was also considered For validation of the developed code, comparison of present calculation with that of measurement data of the experimental data for the range of operating period studied.

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Investigation of the hydrogen production of the PACER fusion blanket integrated with Fe-Cl thermochemical water splitting cycle

  • Medine Ozkaya;Adem Acir;Senay Yalcin
    • Nuclear Engineering and Technology
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    • v.55 no.11
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    • pp.4287-4294
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    • 2023

  • In order to meet the energy demand, energy production must be done continuously. Hydrogen seems to be the best alternative for this energy production, because it is both an environmentally friendly and renewable energy source. In this study, the hydrogen fuel production of the peaceful nuclear explosives (PACER) fusion blanket as the energy source integrated with Fe-Cl thermochemical water splitting cycle have been investigated. Firstly, neutronic analyzes of the PACER fusion blanket were performed. Necessary neutronic studies were performed in the Monte Carlo calculation method. Molten salt fuel has been considered mole-fractions of heavy metal salt (ThF4, UF4 and ThF4+UF4) by 2, 6 and 12 mol. % with Flibe as the main constituent. Secondly, potential of the hydrogen fuel production as a result of the neutronic evaluations of the PACER fusion blanket integrated with Fe-Cl thermochemical cycle have been performed. In these calculations, tritium breeding (TBR), energy multiplication factor (M), thermal power ratio (1 - 𝜓), total thermal power (Phpf) and mass flow rate of hydrogen (ṁH2) have been computed. As a results, the amount of the hydrogen production (ṁH2) have been obtained in the range of 232.24x106 kg/year and 345.79 x106 kg/year for the all mole-fractions of heavy metal salts using in the blanket.

  • https://doi.org/10.1016/j.net.2023.08.007 인용 PDF