Computer Simulation of Thermal and Hydraulic Processes in NPP Steam Generator Channels on the Basis of Interval-Iterative Method

Yefimov, О.V.; Pylypenko, M.M.; Potanina, Т.V.; Kavertsev, Valerii; Harkusha, Tetyana; Yesipenko, Tetyana

doi:10.46813/2022-137-173

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…The mathematical model of the steam generator includes the following dependencies [5][6][7][8][9][10][11][12][13][14][15]: a) the equation of heat balance of the steam generator:…”

Section: The Goal Of the Workmentioning

confidence: 99%

Design Characteristics of the Horizontal Steam Generator PGV-1000

Yefimov¹,

Tiutiunyk²,

Tetyana³

et al. 2023

ІДНРС

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The materials of the article consider the design characteristics of horizontal steam generators PGV-1000 for WWER NPPs. The NPP steam generator, in particular the PGV-1000 steam generator, is a specific heat exchange unit. This unit, together with a nuclear reactor and a steam turbine, is one of the main equipment of multi-circuit (double-circuit) steam turbine NPPs. The steam generator produces working steam using heat dissipated from the reactor core by the cooling medium and sent to the heat exchange surface of the steam generator. NPP steam generators, connecting the contours of the coolant and the working substance, equally belong to each of them. The heat-absorbing medium in the steam generator is the working substance (water, steam). PGV-1000 type NPP steam generators with pressurized water reactors produce dry saturated steam. The requirement to maintain high purity of the coolant is due to the heat transfer surfaces of such steam generators made of austenitic stainless steel with electropolished surfaces. WWER reactors do not allow the coolant to boil in the core, so the temperature of the coolant at the outlet of the reactor (at the inlet to the steam generator) is always lower than the saturation temperature corresponding to the water pressure in the coolant circuit. Underheating of the coolant to the saturation temperature (approximately 25 ÷ 30 °С) guarantees the exclusion of vaporization even in the most loaded reactor channels. The design characteristics of modern horizontal steam generators such as PGV-1000 of various modifications provide high technical and economic performance of NPP units with WWER-1000 and high maintainability, which allows to extend the service life of domestic NPPs.

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“…The mathematical model of the steam generator includes the following dependencies [5][6][7][8][9][10][11][12][13][14][15]: a) the equation of heat balance of the steam generator:…”

Section: The Goal Of the Workmentioning

confidence: 99%

Design Characteristics of the Horizontal Steam Generator PGV-1000

Yefimov¹,

Tiutiunyk²,

Tetyana³

et al. 2023

ІДНРС

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“…1 The object of research is power units of nuclear power plants. 2 The relevance of the problem is the task of optimizing the planning and organization of repair work on power units of power plants and calculating their availability coefficients based on the results of diagnostics of the technical condition of the equipment. 3 The purpose of the research is to optimize the parameters and characteristics of the equipment of NPP power units.…”

mentioning

confidence: 99%

Optimization of Operating Modes of Power Units of Nuclear Power Plants

Yefimov,

Kavertsev,

Tiutiunyk

et al. 2023

ІДНРС

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The materials of the article consider the main methodological provisions of calculations and optimization of NPP power unit equipment parameters using mathematical modeling methods. For the effective implementation of tasks related to determining the optimal parameters and structures of NPP power unit equipment using mathematical modeling and well-developed multifactor optimization methods, it is necessary to fulfill a number of requirements at their productions. Practice shows that it is impractical to optimize with the help of a single mathematical (simulation) model the entire set of parameters characterizing a given power unit, because with such a formulation, the optimization tasks are often mutually incorrect due to a significant discrepancy in the accuracy of various source information, unequal influence of parameters on the target function, specific differences in the mathematical description of various units and elements of the power unit. In order to effectively optimize the parameters of NPP power units, it is necessary to create a system of interconnected mathematical models, which include: a group of detailed mathematical models of individual units and elements of power unit equipment; more generalized mathematical models for the main equipment of power units built on their basis; complete mathematical model of power units.

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Computer Simulation of Thermal and Hydraulic Processes in NPP Steam Generator Channels on the Basis of Interval-Iterative Method

Cited by 2 publications

References 3 publications

Design Characteristics of the Horizontal Steam Generator PGV-1000

Design Characteristics of the Horizontal Steam Generator PGV-1000

Optimization of Operating Modes of Power Units of Nuclear Power Plants

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