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Convective Air Flows from Typical Heat Sources

Convective air flows from typical heat sources like people, computers, radiators and more.

The table below indicates the convective heat flow generated by some common heat sources.

Convective Air Flows from Typical Heat Sources
SourceConvective Air Flow
(liter/sec)
1.1 m (3.5 ft) above floor1.8 m(6 ft) above floor
Room with
height < 3 m
People, sitting relaxed 15 - 20 40 - 50
People, sitting working 15 - 20 40 - 50
People, standing working 15 - 20 40 - 50
Fax 15 - 20 30 - 40
Table lamp, fluorescent tube 3 - 5 10 - 15
Table lamp, bulb 10 - 15 25 - 30
PC 15 - 20 40 - 50
Copy machine 15 - 30 40 - 70
Window /m2 3 - 5 3 - 5
Radiator 5 - 10 5 - 10
Room with
height > 3 m
People, sitting relaxed 15 - 20 40 - 50
People, sitting working 15 - 20 40 - 50
People, standing working 15 - 20 40 - 50
Over head projector 20 - 30 60 - 70
TV and video 20 - 30 50 - 60
Window /m2 3 - 5 3 - 5
Radiator 5 - 10 5 - 10
Industry People, moderate work 40 - 50
People, heavy work 40 - 50
Welding machine 100 - 150

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