Whitepapers

Heat exchanger modelling for generator ventilation systems

The cooling of the generator’s stators and rotors is accomplished by circulating water, hydrogen or both through stator coils/core and rotor field windings. The gas coolant is circulated by means of a blower which is an integral part of the rotor assembly.  This paper discusses how the heat exchanger/cooler is modelled using CFD (computational Fluid Dynamics) as a porous medium and the associated boundary conditions. The results are validated from the benchmark pressure drops observed in similar generators.

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