Daikin VRV-WIII Service Manual download pdf (Page 10)

• Water-cooled design guide

• VRV Systems • Water-cooled design guide

3 Water piping elements

3 - 1 Heat rejection equipment

3 - 1 - 1 Cooling towers types

3 - 1 - 1 - 1 Open cooling towers

a Forced Draught Tower

Forward curved centrifugal fans on the air inlet will force/push the air in either a counter flow or cross flow pattern. Centrifugal fans use more power

but generate enough static pressure to overcome any problems associated with internally located cooling towers or those fitted with sound

dampers. These towers are quieter than others and are particularly useful for low noise applications. The cross flow tower offers the benefit of a lower

profile unit where aesthetics or plant room height may be restricted. On the other hand, the power input is approximately double that of an induced

draught tower.

Typical air/water temperatures for an open cooling tower operating in a temperate climatic region:

Water

out

Air

out

Air

Water

sprays

35°C

35°CWB

35°DB/25°CWB

30°C

Air

Cooling

tower

Cooled water

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Daikin VRV-WIII Service Manual Page 10

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