Abstract:
The thermo-hydraulic performance of a 300W
concentric annular ohmic heater was investigated. To
minimize possible electrochemical reactions and corrosion,
a higher frequency was applied and factors of field strength
and frequency were studied. 2D computer simulation
solving momentum, thermal and electrical energy was
performed using the FlexPDE software. A good agreement
between experimental and analytical analysis of static
heating was obtained. There were significant differences
between calculated and measured wall temperature near the
entrance. The calculated outlet temperature was however in
reasonable agreement with the experiment value.
