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@BOOK{Brckerhoff:31748,
      author       = {Bröckerhoff, Peter},
      title        = {{H}eißgasisolierungen},
      volume       = {3911},
      issn         = {0944-2952},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {PreJuSER-31748, Juel-3911},
      series       = {Berichte des Forschungszentrums Jülich},
      pages        = {152 p.},
      year         = {2001},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {The inner surfaces of pressure vessels and hot gas ducts of
                      gas-cooled nuclear power stations need internal insulation
                      because of the high operating pressures and temperatures.
                      They have to protect the pressure bearing walls from high
                      temperatures. In addition, the thermal fluxes of the power
                      stations should be low. Because of the high pressure the
                      insulatiog systems have to be installed an the inner
                      surfaces of the walls and not an the outer surfaces as in
                      case of conventional stations. Therefore gas movement may
                      occur within the insulation due to the elevated pressures
                      and local axial pressure gradients thus decreasing their
                      effectiveness. Consequently gas movements, e. g. natural or
                      forced convection, must be excluded or reduced in any Gase
                      by means of flow barriers within the insulation. By these
                      means the flow resistance inside the thermal barriers will
                      be increased. In case of rapid depressurization, however,
                      the flow barriers must not hinder the gas to escape easily
                      from the interior. Otherwise the inner parts of the
                      insulation could be damaged by over-pressures. Therefore
                      breather holes are provided. Their diameters must be
                      optimized with respect to the depressurization rates. In the
                      following at first the requirements for duct insulations and
                      some designs will be described. After that test facilities
                      and experimental results including thermal fluxes, effective
                      thermal conductivities, temperatures and pressure loadings
                      will be intensively discussed. As far as available in
                      literature also thermal barriers for pressure vessels and
                      ducts of reactors in Great Britain and France will be
                      described.},
      cin          = {ISR-2},
      cid          = {I:(DE-Juel1)ISR-2-20090406},
      pnm          = {Sicherheitsanalysen},
      pid          = {G:(DE-Juel1)FUEK28},
      typ          = {PUB:(DE-HGF)3},
      url          = {https://juser.fz-juelich.de/record/31748},
}