期刊
FRONTIERS IN ENERGY RESEARCH
卷 9, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fenrg.2021.817373
关键词
high temperature gas-cooled reactor; power conversion unit; combined cycle; matching characteristics; progressive optimization
资金
- National Key R&D Program of China [2018YFB1900500]
- National Science and Technology Major Project [ZX069]
- Youth Talent Project of China National Nuclear Corporation
Due to the serious environmental and climate problems, the energy industry is required to focus on energy utilization rates. High-temperature gas-cooled reactors (HTGRs) coupled with combined cycles show advantages in efficient energy conversion. In this study, the optimization characteristics of the combined cycle coupled with HTGRs are revealed, with two extreme values of combined cycle efficiency for subcritical steam parameters.
Owing to the current serious environmental and climate problems, the energy industry must focus on the problem of energy utilization rates. High-temperature gas-cooled reactors (HTGRs) are fourth-generation reactors, characterized by high outlet temperatures. The combined cycle is composed of the gas turbine and steam turbine cycles, and it can realize the cascade utilization of high-quality energy. It is a highly competitive power conversion scheme for HTGRs. In this study, the matching characteristics of the combined cycle coupled with HTGRs are revealed through the progressive optimization method. In the combined cycle coupled with HTGRs, the topping and bottoming cycle are both closed cycles, therefore, the optimization for cycle efficiency is to match the topping and bottoming cycles. For a combined cycle with subcritical steam parameters, there are two extreme values of the combined cycle efficiency that have different power ratios. The characteristics revealed in this study are unique to closed combined cycle coupled with HTGRs.
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