Mass optimization of a supercritical CO2 Brayton cycle with a direct cooled nuclear reactor for space surface power
نویسندگان
چکیده
منابع مشابه
Analysis of a High Temperature Supercritical Brayton Cycle for Space Exploration
This paper provides a preliminary analysis of the supercritical Brayton cycle, a power generation system for space exploration. Supercritical working fluids increase efficiency due to increased compressibility at the critical point but have not been investigated at the high temperatures necessary for space power generation. Through computer simulation, the viability of the supercritical Brayton...
متن کاملVariable Electricity with Base-load Reactor Operations Fluoride-salt-cooled High-temperature Reactor (FHR) with Nuclear Air-Brayton Combined Cycle (NACC) and Firebrick Resistance-Heated Energy Storage
In this century man will transition to a low-carbon energy future—either in first half of the century because of concerns about global climate and ocean pH (acidity) changes or in the second half of the century because of depletion of fossil resources in a world of 10 billion people. Since the caveman discovered fire, our energy policy has been to have a storable supply of a carbon fuel (wood, ...
متن کاملClosed-Brayton-Cycle Heat Exchangers in 100-kWe Nuclear Space Power Systems
Performance expectations of closed-Brayton-cycle heat exchangers to be used in 100-kWe nuclear space power systems were forecast. Proposed cycle state points for a system supporting a mission to three of Jupiter’s moons required effectiveness values for the heat-source exchanger, recuperator and rejection exchanger (gas cooler) of 0.98, 0.95, and 0.97, respectively. Performance parameters such ...
متن کاملExergoeconomic analysis and genetic algorithm power optimization of an irreversible regenerative Brayton cycle
In this study, the performance of an irreversible regenerative Brayton cycle is sought through power maximizations using finite-time thermodynamic concept in finite-size components. Optimizations are performed using a genetic algorithm. In order to take into account the finite-time and finite-size concepts in the current problem, a dimensionless mass-flow rate parameter is used to deploy ti...
متن کاملPerformance and Mass Modeling Subtleties in Closed-Brayton-Cycle Space Power Systems
A number of potential NASA missions could benefit from closed-Brayton-cycle (CBC) power conversion systems. The human and robotic mission power applications include spacecraft, surface base, and rover scenarios. Modeling of CBC subsystems allows system engineers, mission planners and project managers to make informed decisions regarding power conversion system characteristics and capabilities. ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied Thermal Engineering
سال: 2019
ISSN: 1359-4311
DOI: 10.1016/j.applthermaleng.2019.114299