Power cycle assessment of nuclear high temperature gas-cooled reactors

Herranz, L.E.; Linares, J. I. Vico; Moratilla, B.Y.

doi:10.1016/j.applthermaleng.2008.08.006

Cited by 53 publications

(12 citation statements)

References 10 publications

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“…Based on previous experience on power cycles for innovative fission reactors [3][4][5], He and CO 2 Brayton cycles have been adapted to the fusion energy sources. Initial results were summarized and published elsewhere [6].…”

Section: Introductionmentioning

confidence: 99%

Power conversion systems based on Brayton cycles for fusion reactors

Linares

Herranz²,

Moratilla

et al. 2011

Fusion Engineering and Design

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Section: Introductionmentioning

confidence: 99%

Power conversion systems based on Brayton cycles for fusion reactors

Linares

Herranz²,

Moratilla

et al. 2011

Fusion Engineering and Design

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“…Helium Brayton cycles are promising candidates for the power conversion in future fission (Generation IV: HTGRs and SFR) [1][2][3][4][5] and fusion reactors [6][7][8][9]. Results show high thermal efficiencies, higher than those obtained with the Rankine cycle of current nuclear plants.…”

Section: Introductionmentioning

confidence: 91%

Design and analysis of helium Brayton power cycles for HiPER reactor

Sánchez

Juárez

Sanz

et al. 2013

Fusion Engineering and Design

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HIGHLIGHTS• A helium Brayton cycle has been designed integrating the two energy sources of HiPER.• The Brayton cycle has intercooling stages and a recovery process.• The low temperature of HiPER heat sources results in low cycle efficiency (35.2%).• Two inter-cooling stages and a reheating process increases efficiency to over 37%.• Helium Brayton cycles are to be considered as candidates for HiPER power cycles. ABSTRACTHelium Brayton cycles have been studied as power cycles for both fission and fusion reactors obtaining high thermal efficiency. This paper studies several technological schemes of helium Brayton cycles applied for the HiPER reactor proposal. Since HiPER integrates technologies available at short term, its working conditions results in a very low maximum temperature of the energy sources, something that limits the thermal performance of the cycle. The aim of this work is to analyze the potential of the helium Brayton cycles as power cycles for HiPER. Several helium Brayton cycle configurations have been investigated with the purpose of raising the cycle thermal efficiency under the working conditions of HiPER. The effects of inter-cooling and reheating have specifically been studied. Sensitivity analyses of the key cycle parameters and component performances on the maximum thermal efficiency have also been carried out. The addition of several inter-cooling stages in a helium Brayton cycle has allowed obtaining a maximum thermal efficiency of over 36%, and the inclusion of a reheating process may also yield an added increase of nearly 1 percentage point to reach 37%. These results confirm that helium Brayton cycles are to be considered among the power cycle candidates for HiPER.

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“…Because the aim of this paper is to evaluate the effect of AWM cycle on the thermodynamic and economic performances of the combined cycle, the HTGR plant (closed Brayton cycle) specific cost is assumed to be 1073$/kW [21]. A cost of 8$/MWh is assumed for nuclear fuel [22]. Then, the capital investment of AWM cycle is calculated.…”

Section: Economic Modelingmentioning

confidence: 99%

Parametric Investigation and Thermoeconomic Optimization of a Combined Cycle for Recovering the Waste Heat from Nuclear Closed Brayton Cycle

Luo

Hong

Liu

et al. 2016

Science and Technology of Nuclear Installations

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A combined cycle that combines AWM cycle with a nuclear closed Brayton cycle is proposed to recover the waste heat rejected from the precooler of a nuclear closed Brayton cycle in this paper. The detailed thermodynamic and economic analyses are carried out for the combined cycle. The effects of several important parameters, such as the absorber pressure, the turbine inlet pressure, the turbine inlet temperature, the ammonia mass fraction, and the ambient temperature, are investigated. The combined cycle performance is also optimized based on a multiobjective function. Compared with the closed Brayton cycle, the optimized power output and overall efficiency of the combined cycle are higher by 2.41% and 2.43%, respectively. The optimized LEC of the combined cycle is 0.73% lower than that of the closed Brayton cycle.

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Power cycle assessment of nuclear high temperature gas-cooled reactors

Cited by 53 publications

References 10 publications

Power conversion systems based on Brayton cycles for fusion reactors

Power conversion systems based on Brayton cycles for fusion reactors

Design and analysis of helium Brayton power cycles for HiPER reactor

Parametric Investigation and Thermoeconomic Optimization of a Combined Cycle for Recovering the Waste Heat from Nuclear Closed Brayton Cycle

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