modular helium temperature
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The modular high-temperature gas-cooled reactor (MHTGR) is an advanced power plant concept that has been under design definition since 1984. The MHTGR design utilizes basic high-temperature gas-cooled reactor features of ceramic fuel, helium coolant, and a graphite moderator.
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Next Generation Nuclear Plant (NGNP) Prismatic HTGR …
One of the reactor system concepts, the Very High Temperature Reactor (VHTR), with helium as the coolant, has been identified as uniquely suited for producing …
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Deep Burn Modular High Temperature Reactors
Deep Burn Modular High Temperature Reactors Project Summary Report For period November 1, 2006 to October 31, 2007 Submitted to General Atomics La-Jolla, California ... MCNP Model for the Deep Burn Modular Helium-Cooled Reactor 5 2.1 Geometry 5 2.2 Materials 10 ...
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Advanced Reactors | General Atomics
EM 2 is a helium-cooled fast reactor with a core outlet temperature of 850°C. It is designed as a modular, grid-capable power source with a net unit output of 265 MWe. The reactor employs a "convert and burn" core design which converts fertile isotopes to fissile and burns them in situ over a 30-year core life.
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Modular HTGR Safety Basis and Approach
SC-MHR Steam-Cycle Modular Helium Reactor SG Steam Generator THTR Thorium High-Temperature Reactor TLRC Top-Level Regulatory Criteria TRISO Tri-structural Isotropic ... Modular High Temperature Gas-Cooled Reactor (MHTGR) using an annular prismatic block core arrangement. Licensing activities included preapplication interaction with the …
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Modular Helium Reactor
Very high temperature reactor (VHTR) is a graphite moderated helium-cooled reactor, like GT-MHR and PBMR, but the coolant temperature is significantly increased to 1000°C and beyond. These high temperatures enable very high electric efficiency greater than 50% …
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Frontiers | CFD Investigation of MHTGR Natural Circulation and …
One of the key postulated accidents in a high-temperature gas-cooled reactor (HTGR) is the pressurized loss of forced cooling (P-LOFC) of the primary loop, which can be triggered by its primary helium circulator trip or turbine trip. If the reactor shutdown cooling system (SCS) fails during a P-LOFC accident, part of the reactor decay heat is absorbed by the …
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Steady-state thermal fluids analysis for the HTR-PM equilibrium core
The modular high temperature reactor (HTR) is characterized by its salient advantages, including inherent safety features, ... primary mass flow rate, and helium inlet/outlet temperature. Other parameters used as the boundary condition include: 1) the atmosphere outside the reactor concrete cavity is set as a fluid boundary of 35 °C; ...
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Preliminary studies of compact Brayton cycle
This system is consisted with a gas-cooled Modular Helium Reactor (MHR) and a helium Gas Turbine (GT) system which has one turbine, two compressors and heat exchangers such as a recuperator, a precooler and an intercooler (LaBar, 2002). Gas Turbine High Temperature Reactor (GT-HTR) that has been developed by Japan …
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The Modular Helium Reactor for Hydrogen Production
For electricity and hydrogen production, an advanced reactor technology receiving considerable international interest is a modular, passively-safe version of the …
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A Review of Helium Gas Turbine Technology for High-temperature Gas
For instance, the helium turbomachinery can be applied to the modular high-temperature gas-cooled reactors (MHTGR) power generation system [1] [2] [3][4], propulsion system for precooled ...
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USE OF THE MODULAR HELIUM REACTOR FOR HYDROGEN …
The author has recently completed a three-year project for the US Department of Energy (DOE) whose objective was to ''define an economically feasible concept for production of hydrogen, using an advanced high-temperature nuclear reactor as the energy source''. Thermochemical water-slitting, a chemical process that accomplishes the …
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China Starts Up First Fourth-Generation Nuclear Reactor
The first of two units at China's much-watched high-temperature gas-cooled modular pebble bed (HTR-PM) demonstration project was successfully connected to the grid on Dec. 20. ... and a helium ...
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The gas-turbine modular helium reactor | Request PDF
[6] China and Japan have built more recently smaller experimental reactors (high temperature engineering test reactor (HTTR), HTR-10) of the 10-30 MWt class, …
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The Modular Helium Reactor for Hydrogen Production
The Modular Helium Reactor (MHR) is one of the advanced reactor concepts within the internationally-supported Generation IV program. ... For electricity production, the MHR operates with an outlet helium temperature of 850 C to drive a direct, Brayton-cycle power-conversion system with a thermal-to-electrical conversion efficiency of 48 percent ...
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600-MWe high-temperature gas-cooled reactor nuclear power …
The pebble-bed high-temperature gas-cooled reactor (HTGR) originated with the invention of Schulton R in Germany. Two pebble-bed HTGRs, namely the 45-MWt AVR pebble high-temperature gas-cooled experimental reactor and 750-MWt THTR high-temperature gas-cooled reactor demonstration power station [], were successively …
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The Gas Turbine – Modular Helium Reactor: A Promising …
technologies due to the high operating temperature of the gas-cooled reactor, high thermal efficiency of the Brayton cycle power conversion system, high fuel burnup (>100,000 MWd/MT), and low operation and maintenance requirements. I. INTRODUCTION The Gas Turbine – Modular Helium Reactor (GT MHR) is an advanced gas-cooled reactor …
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Transient Study on the HTR-PM with TINTE-vPower Coupling Code
The decrease in the SG inlet helium temperature will also cause the decrease in outlet helium temperature after it transfers the heat to the water ... Z. Chen, and L. Shi, "Study on the DLOFC and PLOFC accidents of the 200 MWe pebble-bed modular high temperature gas-cooled reactor with TINTE and SPECTRA codes," …
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Framatome and GA team up on fast modular reactor
The EM2 employs a 500 MWt, 265 MWe helium-cooled fast-neutron high-temperature reactor operating at 850 degrees Celsius. This would be factory manufactured and transported to the plant site by truck. …
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High Temperature Gas-Cooled Reactors Lessons Learned Applicable to …
@article{osti_1023461, title = {High Temperature Gas-Cooled Reactors Lessons Learned Applicable to the Next Generation Nuclear Plant}, author = {Beck, J M and Pincock, L F}, abstractNote = {The purpose of this report is to identify possible issues highlighted by these lessons learned that could apply to the NGNP in reducing technical …
ادامه مطلبA load following control strategy for Chinese Modular High-Temperature
Chinese Modular High-Temperature Gas-Cooled Reactor HTR-PM is a promising energy source for comprehensive utilization. The original coordinated control strategy of HTR-PM is a "turbine following reactor" strategy, which is not able to perform load following operation. ... Besides, as the reactor outlet hot helium temperature can reach …
ادامه مطلبThe Gas-Turbine Modular Helium Reactor
with potential for still higher temperature), the modular helium reactor system can also efficiently produce hydrogen by high temperature electrolysis or thermochemical water splitting. The technology embodied in the GT-MHR concept has high potential, with modest further development work, to meet the requirements for the Next Generation
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High Temperature Gas-Cooled Reactors Lessons Learned …
vessel rather than prestressed concrete found in Fort St. Vrain; and the use of helium as a primary coolant rather than CO 2. Other lessons learned, 68 in total, are documented in Sections 2 through 6 and will be ... 1.4.9 Modular High-Temperature Gas-Cooled Reactor (United States) ..... 14 1.4.10 Gas Turbine-Modular Helium Reactor (United ...
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30599T00005, Revision 2, Fast Modular Reactor Principal …
Fast Modular Reactor Principal Design Criteria Number: 30599T00005 Revision: 2 1 Use or disclosure subject to restrictions on title page of this document. 1 INTRODUCTION General Atomics Electromagnetic Systems (GA-EMS) is developing a 50 MWe helium-cooled Fast Modular Reactor (FMR) [1]. The project has been selected by the U.S. Department of
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General Aspects of High-Temperature Reactors | SpringerLink
The helium temperature of 750 °C allows the production of hot steam with a temperature of 530–600 °C and steam pressures of 10–30 MPa. These are conditions of modern steam cycle plants with total net efficiencies of 40–44%. ... Design aspects of the Chinese modular high-temperature gas-cooled reactor HTR-PM, Nuclear Engineering …
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Power conversion system considerations for a high
1. Introduction. Following the proposal in 1979 by German researchers [1], [2] of a modular high temperature helium cooled reactor, with the major components installed in steel pressure vessels, and embodying passive decay heat removal and inherent safety features, many plant design studies have been undertaken worldwide on steam cycle …
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MHTGR (Modular High-Temperature Gas-Cooled Reactor) …
The Modular High-Temperature Gas-Cooled Reactor (MHTGR) is an advanced power plant concept which has been under design definition since 1984. The design utilizes basic high-temperature gas-cooled reactor features of ceramic fuel, helium coolant and a graphite moderator which have been under development for 30 years.
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Session 5
Design Process for Modular Helium-Cooled Reactor Plants – A revision of the current standard is being initiated. – The revision will focus on making the standard more inclusive of other high temperature gas reactor types. This will include a broader range of fuel particle designs and coatings, and different types of gas coolants.
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Xe-100 — High-Temperature Gas Cooled Nuclear …
Flexible application – electricity and/or process heat. Base load or load following. Online refueling (95% plant availability) High burn-up fuel cycle (160 GWd/tHM) 200 MW …
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Pebble Bed Modular Reactors
2.4.2 South Africa: PBMR-CG design. The Pebble Bed Modular Reactor (PBMR) design began in 1996 as a 400 MWt annular core design with an outlet temperature of 900 °C coupled to a direct Brayton power conversion cycle. Currently, it is a 250 MWt cylindrical core design with an outlet temperature of 750 °C coupled to an …
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