Results 1 to 10 of about 1,562 (254)

Implementation of the hierarchical approach in the mathematical modelling of once-through steam generators

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2020
A comprehensive system analysis of a once-through steam generator was carried out as well as a multilevel structure of its model was developed. The application of the procedure of decomposition of a complex object at the initial stages of modeling made ...
Надія Володимирівна Ложечнікова
doaj   +6 more sources

Design of digital nuclear power small reactor once-through steam generator control system

open access: yesNuclear Engineering and Technology, 2022
The once-through steam generator used in the small modular reactor needs to consider the stability of the outlet steam pressure and steam superheat of the secondary circuit to achieve better operating efficiency.
Hong Qian, Mingyao Zou
doaj   +3 more sources

Three-Dimensional CFD Model Development and Validation for Once-Through Steam Generator (OTSG): Coupling Combustion, Heat Transfer and Steam Generation

open access: yesChemEngineering, 2022
The current research studies the coupled combustion inside the furnace and the steam generation inside the radiant and convection tubes through a typical Once-Through Steam Generator (OTSG).
Ehsan Askari Mahvelati   +3 more
doaj   +3 more sources

Model Predictive Control of Once Through Steam Generator Steam Quality

open access: yesIFAC-PapersOnLine, 2015
Abstract Steam quality is a critical process variable in the once through steam generator (OTSG) operation. However, the lack of online measurement and closed loop control of steam quality limits the efficient operation of OTSGs. To resolve this problem, this paper presents a model predictive control (MPC) solution based on soft sensor measurement ...
Fei Qi, Eliyya Shukeir, Ramesh Kadali
openaire   +3 more sources

The impact of tube bundle layout on the thermal and fluidic behaviour of liquid lead–bismuth eutectic in a helical-coiled once-through steam generator [PDF]

open access: yesHeliyon
This study introduces a numerical model to assess the thermal and frictional properties of LBE crossflow over tube bundles on the shell side of a Helical-coiled Once-Through Steam Generator (H-OTSG) considering different arrangements, including inline ...
Mashrur Muntasir Nuhash   +2 more
doaj   +2 more sources

Experiment and Verification Test of the Once-through Steam Generator of the 10 MW High-temperature Gas-cooled Reactor Flow Stability of the Once-through Steam Generator [PDF]

open access: yesJournal of Nuclear Science and Technology, 2004
In January 2003, the 10MW High-temperature Gas-cooled Reactor (HTR-10) reached its full power for continuous operation of seventy-two hours in the Institute of Nuclear Energy Technology, Tsinghua University. The reactor operated smoothlyqbthe design parameters were successfully attained. The once-through steam generator (SG) is one of key equipments of
Huaiming JU   +5 more
openaire   +3 more sources

A three-region movable-boundary helical coil once-through steam generator model for dynamic simulation and controller design

open access: yesNuclear Engineering and Technology, 2023
A simple but accurate mathematical model is crucial for dynamic simulations and controller design of helical coil once-through steam generator (OTSG). This paper presents a three-region movable boundary dynamic model of the helical coil OTSG.
Shifa Wu   +4 more
doaj   +1 more source

Enhancing hydraulic stability in once-through steam generators of small nuclear power plants: A novel approach using throttling baffles and feed pipes.

open access: yesJournal of Radiation Research and Applied Sciences, 2023
Given the increasing global interest in small nuclear power plants (SNPPs), the proposed research aims to investigate the design of once-through steam generators (OTSGs) used in SNPPs, with a particular focus on ensuring hydraulic stability in the heat ...
Xiaolong Zhou, Vladimir Kravchenko
doaj   +1 more source

Fault-tolerant control system for once-through steam generator based on reinforcement learning algorithm

open access: yesNuclear Engineering and Technology, 2022
Based on the Deep Q-Network(DQN) algorithm of reinforcement learning, an active fault-tolerance method with incremental action is proposed for the control system with sensor faults of the once-through steam generator(OTSG).
Cheng Li   +3 more
doaj   +1 more source

Method and results of hydraulic calculation of the heat exchange surface of the once-through steam generator

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2021
Ukraine with her developed machine-building potential can take the deserving place in the production of small modular reactors. One of basic elements of small modular reactors equipment is steam generator.
Володимир Петрович Кравченко   +1 more
doaj   +5 more sources

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