Paper presented at the 8th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Mauritius, 11-13 July, 2011.
Ambient winds may bring on poor fan performance and
deteriorated heat rejection of the air-cooled condensers in a
power plant. The disadvantageous wind impacts can be
weakened thanks to the flow field leading of the wind. By
introducing a radiator model to the fin-tube bundles, the airside
fluid and heat flow in air-cooled condensers with a flow
guiding device in a representative 2 × 600MW direct dry
cooling power plant are modeled and calculated. The flow rate
and heat rejection of the individual condenser cells and the aircooled
condensers with flow guiding devices at different slat
obliquities are obtained and compared. The results show that
the flow rate and heat rejection of the air-cooled condensers
both increase owing to the setup of the flow guiding device.
The low flow guiding slats obliquity is superior to the high one
for the thermo-flow performances. For the upwind condenser
cells, the flow and heat transfer rates vary widely due to the
flow field leading of the ambient winds by the flow guiding
device especially at the lowered obliquity. It can be of use for
the optimal design and operation of air-cooled condensers in a
power plant.
