# Calculating power of a Turbocharger

1. Jan 23, 2010

### b_dobro

Hi. My question is about the turbocharger itself and not about the resulting power increase from the added air in the combustion chamber.

Can you calculate the power of a turbo if you have the change in pressure (atmospheric VS. Intake Manifold), and the change in temperature (outside air to intake manifold temp).?

For example, you know the outside temperature is 25 C, the temperature after compression is 120 C. The initial pressure is atmospheric 14.7Psi, and after compression it is 24.7Psi. Volume is constant. Is there a way to find the power of the turbo if it is able to deliver this pressure change at a constant rate?

I'm just looking for a ballpark number, no need to be exact.

2. Jan 24, 2010

### Lsos

I'm sure there's a way to do it although I'm not in a position to figure it out right now, but, are you sure the volume is constant...during compression?

3. Jan 24, 2010

### b_dobro

I'm guessing the system would be the air intake side of the engine, so volume should remain the same throughout. I don't think the outside volume should be part of the system.

4. Jan 25, 2010