Custom/Home made intercooler
05-23-2004, 01:21 AM
#16
If you reduce the temperature the pressure will drop. PV=nrT. Drop the constant (what is an ideal gas any way) and it is PV=T.
Temp drops, pressure drops...can't get around it.
Temp drops, pressure drops...can't get around it.
05-23-2004, 06:47 AM
#17
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If you reduce the temperature the pressure will drop. PV=nrT. Drop the constant (what is an ideal gas any way) and it is PV=T.
The pressure drops because we are pumping air through a restrictor (the IC), the only effect that the (edit) temperature (/edit) drop has is that the turbo has to pump more air to compensate for the reduced volume of the gas.
The turbo is controlled by the wastegate to deliver a certain pressure, not a certain volume.
If the above were true then we would have a pressure drop at appr 5 psi at 15 psi boost and it would not matter how big the intercooler was, we would still have the same pressure drop. This is obviously not true.
Tomas
Edit: Changed the word "pressure" to "temperature".
Last edited by Tomas L; 05-23-2004 at 07:24 PM.
05-23-2004, 07:31 PM
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To confuse the situation further...
If you somehow got better cooling in your otherwise unchanged IC, then you will see a little bit more pressure drop. The reason for this is that, in order to compensate for the reduced volume after the IC, the turbo has to pump more air past the restrictor (the IC) and the pressure drop increases.
Tomas
If you somehow got better cooling in your otherwise unchanged IC, then you will see a little bit more pressure drop. The reason for this is that, in order to compensate for the reduced volume after the IC, the turbo has to pump more air past the restrictor (the IC) and the pressure drop increases.
Tomas