exhaust fan and wind direction
Asked by prassana | 14th Jan, 2010, 03:07: PM
There is a slight bend in fan blqades. Because of the bend, blade pushes the air depends on blade moving direction.
If you want to fee it, Take a writing pad into your hand streach your hand away from dody and tilt the pad approximately 450 to horizontal plane. try to move your hand (as if you are asking for lift) fastly. You will feel force in one direction when you are moving your hand in upward direction and the force will be in oppositr direction when movind the hand down.
Answered by | 15th Jan, 2010, 09:57: AM
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