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Cooling Tower Processes

Cooling Towers

Efficient cooling of water or other liquids or condensation of steam or other vapours with atmospheric air following the principles of the evaporative cooling or of the dry cooling.

Dry air cooling – closed cooling circuit
no water consumption
no plume dissipation
low pump power consumption

Evaporative cooling – open cooling circuit
small installed foot print
lower plant costs
low fan power consumption

Evaporative cooling – closed cooling circuit
more efficient and less costs-intensive than dry cooling
higher operating and plant costs than open circuit evaporative cooling
switch to dry cooling at lower air temperatures

Water distribution

Distribution inside the cooling tower
closed water distribution (channels & pipes)
open water distribution (channels & troughs)
Distribution above fill
innovative low-pressure nozzle

Cooling fill

film fill (honeycomb, foil fill type) as
low fouling or high performance installation
droplet fill (trickle grid, grate, splash bars and laths)

Drift eliminator

For minimization of drift loss, i.e. reduction of the water loss
and environmental impacts
honeycomb structure
lamellar structure

Heat exchanger
Finned tube heat exchanger for heat transfer to the ambient air inside the cooling tower
finned tubes & non finned, bare tubes
round tubes & oval tubes
header box type & serpentine type

Plate heat exchanger

For separation of the open cooling circuit susceptible to pollution from the fluid flow to be cooled

Construction type and material

Cooling towers are distinguished in principle of their construction type:
cell type construction (square and rectangular)
circular construction (hyperbolic, cylindrical, conical or pyramidal)

Large round cooling towers have a supporting shell of reinforced concrete. The load supporting structures of cell type cooling towers consist of:

reinforced concrete

glass fibre reinforced plastic (GRP)
hot dip galvanized steel
treated timber

Standardized GRP-profiles are more commonly applied. Profiled plastic plates are
preferred for the casing.

Noise protection = Environmental protection

Cooling tower operation generates noise from the rotating machinery and the falling water. Our solutions offer an effective noise reduction at the source of emission:

low noise fans, motors & gears
water droplet absorbers

Additional structural measurements may be necessary in case of very high noise reduction requirements involving:

sound absorbers at air inlet and outlet
sound absorbing casing walls
sound absorbing walls next to the cooling tower