Reference : Condensation in horizontal heat exchanger tubes
Scientific congresses, symposiums and conference proceedings : Paper published in a journal
Engineering, computing & technology : Mechanical engineering
http://hdl.handle.net/10993/27047
Condensation in horizontal heat exchanger tubes
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Leyer, Stephan mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit]
Zacharias, T. [AREVA NP GmbH, Paul-Gossen-Straße 100, Erlangen, 91052, Germany]
Maisberger, F. [AREVA NP GmbH, Paul-Gossen-Straße 100, Erlangen, 91052, Germany]
Lamm, M. [AREVA NP GmbH, Paul-Gossen-Straße 100, Erlangen, 91052, Germany]
Vallee, C. [Helmholtz-Zentrum Dresden-Rossendorf e.V., Bautzner Landstraße 400, Dresden, 01328, Germany]
Beyer, M. [Helmholtz-Zentrum Dresden-Rossendorf e.V., Bautzner Landstraße 400, Dresden, 01328, Germany]
Hampel, U. [Helmholtz-Zentrum Dresden-Rossendorf e.V., Bautzner Landstraße 400, Dresden, 01328, Germany]
2012
International Congress on Advances in Nuclear Power Plants 2012, ICAPP 2012
4
2280-2285
No
International Congress on Advances in Nuclear Power Plants 2012, ICAPP 2012
24 June 2012 through 28 June 2012
Chicago, IL
[en] Computer codes ; Density difference ; Emergency condensers ; Heat exchanger tube ; Heat transfer and pressure drop ; Horizontal heat exchanger ; Innovative reactor concept ; Mass content ; Mass flow ; Operational modes ; Parameter range ; Passive safety ; Passive systems ; Residual heat ; State of the art ; Strong link ; Structure measurement ; Test rigs ; Test setups ; Transfer capacities ; Two-phase natural circulation ; Water cooling ; X-ray tomography ; Flow structure ; Heat transfer ; Mass transfer ; Nuclear power plants ; Numerical models ; Pressure drop ; Two phase flow ; Tubes (components)
[en] Many innovative reactor concepts for Generation III nuclear power plants use passive safety equipment for residual heat removal. These systems use two phase natural circulation. Heat transfer to the coolant results in a density difference providing the driving head for the required mass flow. By balancing the pressure drop the system finds its operational mode. Therefore the systems depend on a strong link between heat transfer and pressure drop determining the mass flow through the system. In order to be able to analyze these kind of systems with the help of state of the art computer codes the implemented numerical models for heat transfer, pressure drop or two phase flow structure must be able to predict the system performance in a wide parameter range. Goal of the program is to optimize the numerical models and therefore the performance of computer codes analyzing passive systems. Within the project the heat transfer capacity of a heat exchanger tube will be investigated. Therefore the tube will be equipped with detectors, both temperature and pressure, in several directions perpendicular to the tube axis to be able to resolve the angular heat transfer. In parallel the flow structure of a two phase flow inside and along the tube will be detected with the help of x-ray tomography. The water cooling outside of the tube will be realized by forced convection. It will be possible to combine the flow structure measurement with an angular resolved heat transfer for a wide parameter range. The test rig is set up at the TOPLFOW facility at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR), so that it will be possible to vary the pressure between 5 and 70 bar. The steam mass content will be varied between 0 and 100 percent. The results will be compared to the large scaled Emergency Condenser Tests performed at the INKA test facility in Karlstein (Germany). The paper will explain the test setup and the status of the project will be presented.
American Nuclear Society (ANS);French Nuclear Society (SFEN);Korean Nuclear Society (KNS);Atomic Energy Society of Japan (AESJ)
http://hdl.handle.net/10993/27047
93719
9781622762101

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