18-20 June, 2003, Budapest, Hungary OSSKI Center (Törley Palace) | 
with Exhibition and Pre-Session on Thermal Energy in Hungarian
"THERMO-BRIDGE"
between East and West for technology transfer and
information exchange
| Scientific Society of
Measurement, Automation and Informatics (MATE)
Branch of Thermal Engineering and Thermogrammetry (TE and TGM)
Méréstechnikai, Automatizálási és
Informatikai Tudományos Egyesület
Hőtechnikai és Termogrammetriai (HT és TGM) Szakosztály
MATE Secretariat: H-1372 Budapest, POB. 451.,Hungary
House of Technology, Budapest
V.,Kossuth Lajos tér 6-8.III.318.
Phone: +361-332-9571, Fax:+361-353-1406
E-mail: mate@mtesz.hu benko@energia.bme.hu |
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Thermotechnics/Hőtechnika |
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56/5 |
Pulsating heat pipes: study on a
two-phase loop
S. Khandekar, M. Groll
IKE, Univ. of Stuttgart, Germany |
S8T07 |
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A pulsating heat pipe (PHP) is a complex
heat transfer device with a strong thermo-hydraulic coupling. To better
understand its operational characteristics, a two-phase loop, heated at one
end and cooled at the other and having no internal wick structure is
constructed (ID: 2.0 mm, working fluid: ethanol). It is concluded that the
loop does essentially represent the thermo-fluidic characteristics of real
multi-turn PHP. Dynamic two-phase instabilities are also present; although the
number of turns in a real PHP increase the perturbations. Existence of an
optimum number of turns for a given heat input is explained. Also, it is shown
that classical thermodynamics seems not to be sufficient for system analysis.
The performance is strongly related to two-phase flow patterns. The role of
gravity in the operation is clarified.
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Contact details: Sameer Khandekar,
Prof. Dr. Manfred Groll
Institut für Kernenergetik und Energiesysteme
Universität Stuttgart, Pfaffenwaldring 31
70569 Stuttgart, Germany.
Tel: (+49)-711-685-2142 / 2481,
Fax: (+49)-711-685-2010
E-mail: khandekar@ike.uni-stuttgart.de,
groll@ike.uni-stuttgart.de |
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| 18-20 June, 2003, Budapest,Hungary |
OSSKI
Center (Törley Palace)
"Fodor
József" National Center of Public Heath
"Frédéric Joliot-Curie"
National Research Institute for
Radiobiology and Radiohygiene. (OKK-OSSKI)
www.osski.hu |
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