The Radiant Heat Transfer in the High Temperature Reactor Core after Failure of the Afterheat Removal Systems

Breitbach, G.; Barthels, H.

doi:10.13182/nt80-a17687

Cited by 83 publications

(46 citation statements)

References 2 publications

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“…Studies confirming this behavior are well documented [25] [30] and will not be discussed here. However, the robust characteristics of the fuel and core design also allow for rapid and reasonably accurate evaluation of passive safety during the design process itself.…”

Section: Peak Accident Temperaturesupporting

confidence: 59%

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Advanced Core Design And Fuel Management For Pebble-Bed Reactors

Gougar¹,

Ougouag²,

Terry³

2004

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A method for designing and optimizing recirculating pebble-bed reactor cores is presented. At the heart of the method is a new reactor physics computer code, PEBBED, which accurately and efficiently computes the neutronic and material properties of the asymptotic (equilibrium) fuel cycle. This core state is shown to be unique for a given core geometry, power level, discharge burnup, and fuel circulation policy. Fuel circulation in the pebble-bed can be described in terms of a few well-defined parameters and expressed as a recirculation matrix. The implementation of a few heat-transfer relations suitable for high-temperature gas-cooled reactors allows for the rapid estimation of thermal properties critical for safe operation. Thus, modeling and design optimization of a given pebble-bed core can be performed quickly and efficiently via the manipulation of a limited number key parameters. Automation of the optimization process is achieved by manipulation of these parameters using a genetic algorithm. The end result is an economical, passively safe, proliferation-resistant nuclear power plant. iv

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Section: Peak Accident Temperaturesupporting

confidence: 59%

“…The active core of the pebble-bed is much larger than a LWR of the same power. The confirm that fuel failure temperatures are avoided in these extreme cases [25], [26], [27],…”

Section: Core Safetymentioning

confidence: 55%

Advanced Core Design And Fuel Management For Pebble-Bed Reactors

Gougar¹,

Ougouag²,

Terry³

2004

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“…In the pebble bed reactor core, there are usually two reactivity control systems -the control rod system and the small absorber ball system, as shown in Figure 2.3 [14,15,16]. The control rod system consists of several control rods and the same number of drive mechanisms.…”

Section: Reactor Controlmentioning

confidence: 99%

“…Zehner and Schlunder used a cell model to determine the effective thermal conductivity taking into account heat conduction and radiation. Breitbach and Barthels developed a modified Zehner-Schlunder model which had been validated with experimental date [16]. Their relation of effective thermal conductivity depends on the temperature and neutron fluence.…”

Section: Pebble Bed Effective Thermal Conductivitymentioning

confidence: 99%

Balance of Plant System Analysis and Component Design of Turbo-Machinery for High Temperature Gas Reactor Systems

Ballinger

Wang

Kadak

et al. 2004

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“…When a loss-of-coolant accident happens, the residual heat must be removed from the core in time, which directly depends on the effective thermal conductivity of the pebble bed [6][7][8][9]. A relevant experiment named SANA-1 [1][2][3][4][5][6][7][8][9][10][11][12] designed by the Research Center Juelich has historically been carried out for validation of the afterheat removal capacity of HTR. The size of the pebble bed and the highest test temperature (below 1000 • C) in SANA-1 were limited.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Analysis of Effective Thermal Conductivity for the Chinese HTR-PM Heat Transfer Test Facility

et al. 2017

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Abstract:The Chinese high temperature gas-cooled reactor pebble bed module (HTR-PM) demonstration project has attracted increasing attention. In order to support the project, a large-scale heat transfer test facility has been constructed for pebble bed effective thermal conductivity measurement over the whole temperature range (0~1600 • C). Based on different heat transfer mechanisms in the randomly packed pebble bed, three different types of effective thermal conductivity have been theoretically evaluated. A prediction of the total effective thermal conductivity of the pebble bed over the whole temperature range is provided for the optimization of the test facility and guidance of further experiments.

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The Radiant Heat Transfer in the High Temperature Reactor Core after Failure of the Afterheat Removal Systems

Cited by 83 publications

References 2 publications

Advanced Core Design And Fuel Management For Pebble-Bed Reactors

Advanced Core Design And Fuel Management For Pebble-Bed Reactors

Balance of Plant System Analysis and Component Design of Turbo-Machinery for High Temperature Gas Reactor Systems

Theoretical Analysis of Effective Thermal Conductivity for the Chinese HTR-PM Heat Transfer Test Facility

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