high temperature gas reactor

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My analysis indicates that breeding is a possibility in high temperature gas reactors using TRISO particle fuel, but even a very high conversion ratio may lead to extended life cores. The high temperature gas could also be used in energy-intensive processes that currently rely on fossil fuels, such as hydrogen production, desalination, district heating, petroleum refining, and ammonia production. It is a graphite-moderated, helium-cooled reactor with thermal neutron spectrum. The very-high-temperature reactor (VHTR), or high-temperature gas-cooled reactor (HTGR), is a Generation IV reactor concept that uses a graphite-moderated nuclear reactor with a once-through uranium fuel cycle. The VHTR is a next step in the evolutionary development of high-temperature gas-cooled reactors. Figure 1 : Key industrial process heat applications and operational temperature range for light water reactors ( LWR ) & high temperature reactors ( HTR ) History. November 28, 2013 at 12:50 PM. The modular high-temperature gas-cooled reactor (MHTGR) design serves as a basis for the benchmark, with some aspects having been modified for simplicity and consistency. The reactor and the nuclear heat supply system (NHSS) are comprised of three major components: the reactor vessel, the steam generator vessels and the cross vessels that routes the helium between the reactor and the steam generators. To enhance its economic benefit, the capital cost of MHTGR can be decreased by combining more reactor modules into one unit and realize the batch constructions in the concept of modularization. THE HIGH TEMPERATURE GAS COOLED REACTOR TEST MODULE CORE PHYSICS BENCHMARKS 4.1 HTR-10 GENERAL INFORMATION China has a substantial programme for the development of advanced reactors that have favorable safety features, economic competitiveness and uranium resource availability. 12. The HTR has more than 50 years of somewhat chequered history behind it. With the single phase Brayton cycle efficiencies of 48% can be easily achieved. 80% of reactor thermal power can be utilized by a cascade energy system for hydrogen production, power generation and desalination. Electron microscope image of dislocation particle interaction in Alloy 617 put under stress at 750°C. The high-temperature gas reactor also has excellent safety features and can generate heat of 900°C or higher, which is significantly higher than that of conventional light-water reactors. The very high temperature reactor is cooled by flowing gas and is designed to operate at high temperatures that can produce electricity extremely efficiently. [Photo/CNNC] A major milestone was achieved at the high-temperature gas-cooled reactor, also known as the HTGR project -- located at the Shidaowan nuclear power plant in Weihai city, in East China's Shandong province -- according to local officials. 3-4 cm ~10 ~30. From 2006 through 2009 he was the program manager for the Nuclear Hydrogen Initiative, coordinating DOE efforts to develop high temperature water-splitting technologies to take advantage of HTGR outlet temperatures. There are two competitive designs of this reactor type: (1) a German “pebble bed” system that uses spherical fuel elements, nominally… The NHSS supplies … The PBMR is a High Temperature Gas cooled Reactor (HTGR), with a closed-cycle, gas turbine or Brayton power conversion system. "Modular High-temperature Gas-cooled Reactor Power Plant" introduces the power plants driven by modular high temperature gas-cooled reactors (HTR), which are characterized by their inherent safety features and high output temperatures. LWR. The first plants were small experimental ones – a 20 MWe unit … In particular this report addresses the comments provided by INL and documented in TEV-1463 Rev. Ramana has written a useful summary of the troubled history of high-temperature gas-cooled reactors (HTGR) including the pebble-bed reactor sub-type. It was first developed for use in high-temperature gas reactors, but can also be applied to molten salt and liquid metal reactor designs. for high temperature gas reactor applications. The high-temperature gas-cooled reactor demonstration project at Shidaowan nuclear power plant. Over the past five decades, high temperature gas-cooled reactors (HTGRs) have been designed and operated throughout the world. Generation Nuclear Plant Project, the DOE initiative to develop and demonstrate a high temperature gas-cooled reactor (HTGR). Superior inherent safety. IAEA TECDOC (CD-ROM) No. APPLICATIONS UP TO 1100 °C Based on over 40 years of development, experience and success, SCHWING manufactures specific high-tempera-ture reactors based on the fluidized bed technology for the thermo-chemical treatment of powders with reaction gases in … The Japan Atomic Energy Agency (JAEA, former Japan Atomic Energy Research Institute) began research and development of high temperature gas-cooled reactors for the multi-purpose use of nuclear / thermal energy in 1969. SFR. All these reactors are primarily fuelled by TRISO (tri iso-structural) coated particles. The VHTR is a type of high-temperature reactor (HTR) that can conceptually have an outlet temperature of 1000 °C. 18.00 2013. The high-temperature gas-cooled reactor (HTGR), as mentioned above in Fuel types, is fueled by a mixture of graphite and fuel-bearing microspheres. High-temperature gas-cooled reactors (HTGRs) also known as very-high-temperature reactors (VHTR) are Generation IV reactors that can operate at very high temperatures and use gas as a coolant. High Temperature gas-cooled reactors produce thermal energy of approximately 1000°C using ceramic (such as silicon carbide) coated fuels and chemically inert helium gas coolant. Science and Technology of Nuclear Installations. English IAEA-TECDOC-CD-1674 978-92-0-186810-7. It can supply nuclear heat and electricity over a range of core outlet temperatures between 700 and 950°C, or more than 1 000°C in future. mean free path. Abstract: Nuclear energy production is a recent technology. In the past, both Germany and the United States spent large amounts of money to design and construct HTGRs, four of which fed electricity into the grid. We’re focused on Gen-IV High-Temperature Gas-cooled Reactors (HTGR) as the technology of choice, with advantages in sustainability, economics, reliability and safety. Download PDF (48.58 MB) Get citation details × Cite this content as: INTERNATIONAL ATOMIC ENERGY AGENCY, Advances in High Temperature Gas Cooled Reactor Fuel Technology, IAEA-TECDOC-CD-1674, IAEA, Vienna (2013). Gas outlet High temperature reactor Fluidized bed Product discharge Proprietary distributor plate Heating room Fluidizing gas. High-Temperature Gas Reactor, or Pebble Bed Reactors, is a method of energy generation involving Pebble Bed Reactor Core and Carbon Dioxide Heat Exchanger. Here’s How: Sized for the Future. A point design for a graphite-moderated, high-temperature, gas-cooled test reactor (HTG TR) has been developed by Idaho National Laboratory (INL) as part of a United States (U.S.) Department of Energy (DOE) initiative to explore and potentially expand the existing U.S. test reactor capabilities. Core . In 1957, a nuclear reactor produced electricity for the first time. High-Temperature Gas Reactors, Volume Five in the JSME Series on Thermal and Nuclear Power Generation, provides a detailed analysis of HTGR design features, including reactor core design, cooling tower design, pressure vessel design, I&C factors and safety design. ); xiaolu8317@126.com (L.X.) High efficiency and attractive economics are possible without compromising the high levels of passive safety expected of advanced nuclear designs. ); lanxiangyun@cqccteg.com (X.L. Our design hits a sweet spot in balancing size, cost & build time. Is characterized with the single phase Brayton cycle neutron spectrum Heating room Fluidizing gas use in high-temperature reactors... 48 % can be utilized by a cascade energy system for hydrogen production, power generation desalination. For instance both GT-MHR and PBMR use the direct gas turbine or Brayton power conversion.... 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