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2018
The development of HTR is characterized by the use of coated particle fuel, graphite fuel elements and core structure and helium as coolant. For the fuel elements, different types have been developed: prismatic blocks in the USA, spherical fuel elements in Germany, modified prismatic blocks in Japan, and rod-type elements in Great Britain/OECD.
Kurt Kugeler, Zuoyi Zhang
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The development of HTR is characterized by the use of coated particle fuel, graphite fuel elements and core structure and helium as coolant. For the fuel elements, different types have been developed: prismatic blocks in the USA, spherical fuel elements in Germany, modified prismatic blocks in Japan, and rod-type elements in Great Britain/OECD.
Kurt Kugeler, Zuoyi Zhang
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Revisiting the Concept of HTR Wallpaper Fuel
Fourth International Topical Meeting on High Temperature Reactor Technology, Volume 1, 2008Good safety characteristics are an outstanding feature of High Temperature Reactors (HTR): • The high graphite inventory in the core provides significant thermal inertia. Graphite also has a high thermal conductivity, which facilitates the transfer of heat to the reflector, and it can withstand high temperatures; • The strongly negative Doppler ...
A. Marmier +5 more
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Annals of Nuclear Energy, 1978
Abstract New forms of energy are required to solve the future problems of the world energy market, especially as regards substitutes for petroleum. High temperature reactors can make an important contribution toward this goal. The prerequisite is a temperature availability at approximately 950C, which has been demonstrated in the AVR reactor at ...
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Abstract New forms of energy are required to solve the future problems of the world energy market, especially as regards substitutes for petroleum. High temperature reactors can make an important contribution toward this goal. The prerequisite is a temperature availability at approximately 950C, which has been demonstrated in the AVR reactor at ...
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2023
Entre as folhas manuscritas, maioritárias nos processos inquisitoriais, encontram-se frequentemente documentos impressos. O presente trabalho debruça-se sobre este fenómeno ainda pouco estudado no quadro dos estudos inquisitoriais portugueses. Limitado ainda aos processos da Inquisição de Lisboa, este artigo estabelece uma tipologia, classificando e ...
Baudry, Hervé +1 more
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Entre as folhas manuscritas, maioritárias nos processos inquisitoriais, encontram-se frequentemente documentos impressos. O presente trabalho debruça-se sobre este fenómeno ainda pouco estudado no quadro dos estudos inquisitoriais portugueses. Limitado ainda aos processos da Inquisição de Lisboa, este artigo estabelece uma tipologia, classificando e ...
Baudry, Hervé +1 more
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An additional performance of HTRS: the waste radiotoxicity minimisation
Radiation Protection Dosimetry, 2005The management of radioactive waste is a key issue for the present and future use of nuclear energy. In this frame, high temperature reactors (HTRs) have, among others, the capability to burn actinides. After a short introduction on HTRs, the performances of two MC-based burnup codes (Monte Carlo continuous energy burnup and MONTEBURNS) in assessing ...
CERULLO, NICOLA +5 more
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1989
Der Reaktorkern eines HTR, hier sei speziell der des THTR-300 betrachtet, besteht aus einer statistischen Schuttung von Graphitkugeln mit 6 cm Durchmesser (siehe Abb. 4.1 und Abb. 4.2). Im THTR wird so in einem Reaktorvolumen von 125 m3 (Durchmesser des Kerns = 5,6 m, mittlere Hohe des Kerns = 5,1 m) eine thermische Leistung von 750 MW bereitgestellt ...
Kurt Kugeler, Rudolf Schulten
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Der Reaktorkern eines HTR, hier sei speziell der des THTR-300 betrachtet, besteht aus einer statistischen Schuttung von Graphitkugeln mit 6 cm Durchmesser (siehe Abb. 4.1 und Abb. 4.2). Im THTR wird so in einem Reaktorvolumen von 125 m3 (Durchmesser des Kerns = 5,6 m, mittlere Hohe des Kerns = 5,1 m) eine thermische Leistung von 750 MW bereitgestellt ...
Kurt Kugeler, Rudolf Schulten
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Japan's future HTR—the GTHTR300
Nuclear Engineering and Design, 2004JAERI started design and development of the high temperature gas cooled reactor with a gas turbine electric generation system, the GTHTR300, in April 2001. The GTHTR300 is expected to be a new electric generation system in the early 2010s. Design originalities of the GTHTR300 are a horizontally mounted highly efficient gas turbine system and an ...
Kazuhiko Kunitomi +4 more
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Nuclear Engineering and Design, 1993
Abstract The HTR in future can be realized with inherent safety. Low power density of the core, high heat capacity as a heat sink and high temperature stable ceramic fuel elements exclude the serious release of fission products in all accident situations. By a new development of SiC-envelopes on the surface of the spherical fuel elements, a promising
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Abstract The HTR in future can be realized with inherent safety. Low power density of the core, high heat capacity as a heat sink and high temperature stable ceramic fuel elements exclude the serious release of fission products in all accident situations. By a new development of SiC-envelopes on the surface of the spherical fuel elements, a promising
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Advantages of going modular in HTRs
Nuclear Engineering and Design, 1984Abstract A multitude of problems that are encountered in large HTR power plans, constructively as well as concerning plant safety, can be related to the mere physical size of a large reactor core. In limiting the thermal power of an HTR-module to approximately 200 MW an inherent limitation of the fuel element temperature below critical values can be
H. Reutler, G.H. Lohnert
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Nuclear Engineering and Design, 2014
Abstract High temperature nuclear reactors will address mainly the industrial cogeneration market and compete with gas cogeneration, the current reference technology. The key question for HTR is therefore: how far are HTRs competitive against gas technologies? This simple question demands a complex response.
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Abstract High temperature nuclear reactors will address mainly the industrial cogeneration market and compete with gas cogeneration, the current reference technology. The key question for HTR is therefore: how far are HTRs competitive against gas technologies? This simple question demands a complex response.
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