Recent content by LauriRauhala

Thanks for these tips! I quickly went to their webpage, its not the easiest to navigate :) will have to reserve some hours to dig deeper into that.

Thanks for the welcome. The impeller diameter is about 400 mm, and we use labyrinth seals, either axial or radial. The gas is a refrigerant, properties close to ideal gas.

Hello, I am designing a centrifugal heat pump, which compresses air. I'm considering making the impeller from aluminum, probably from 7075, since the stresses rise to about 385 MPa when rotating at high speeds. The input temperature of the air is 85 degrees Celcius and output 125 degrees...