Recent content by dries

Yes I mean 1/10000 of atmospheric pressure, the accuracy is needed to determine the flow from a fan curve.

I wondered how you can measure (static) pressure, with an as high as possible accuracy. Could you share your experience about which sensor and setup you allready used? I would like to measure the static pressure before and after a fan with an accuracy of 10[Pa]. Do you think this is possible?

Thanks a loth for the valuable reply!

P or V don't have to be constants as shown in previous formule of isentropic change, they can be dependent of each other. Imagine a compressor, both volume and pressure changes when the air is being compressed.

using the isentropic equation pV^k = constant = p1V1^k you can write V in function of p so you get another integral int (p1/p)^(1/k)*V1 dp = p1^(1/k)*V1 * int p^(-1/k) dp An analog conversion is possible for the pdV, but i found both as methode to calculate the required energy. Now I...

the process is isentropical (so yes)

If you have to calculate the amount of energy needed to perform a compression of the amount of energy is gained by expanding. Then I don't know when to use the integral W = int pdV and when W = int Vdp thanks in advance