1

**General Science / How to calculate fan power - formula?**

« **on:**05/05/2018 08:30:56 »

How can I calculate fan power in these two cases?

The first case is direct wind speed of 10 m/sec.

The fan diameter is 40 cm. The fan housing is shown in the figure.

How to calculate a number 'rpm per second'.

The other case is when the housing is a cone and the fan is 20 cm in diameter.

How to calculate the rotational strength?

In which case is the power of rotate higher?

Is there any formula in the calculation?

I found some formula P=1/2*p*a*V3

[ Invalid Attachment ]

The first case is direct wind speed of 10 m/sec.

The fan diameter is 40 cm. The fan housing is shown in the figure.

How to calculate a number 'rpm per second'.

The other case is when the housing is a cone and the fan is 20 cm in diameter.

How to calculate the rotational strength?

In which case is the power of rotate higher?

Is there any formula in the calculation?

I found some formula P=1/2*p*a*V3

[ Invalid Attachment ]