Simple pressure/temp eq
Simple pressure/temp eq
(OP)
I'm trying to figure out the temperature of air when it expands out of an orifice I have air at -30deg C and 2.5MPa, what temperature will it be when it expands to atmosphere? I presume if I can run it past a turbine it will become even cooler. The only equations I have - also take volume into account - u know p1.v1/t1=p2.v2/t2, would appreciate if anyone could give me a suitable formula for figuring this out, cheers





RE: Simple pressure/temp eq
RE: Simple pressure/temp eq
If the air is initially at rest (large pipe or vessel) and it flows to an ideal isentropic nozzle (adiabatic and frictionless), I estimate the air at the nozzle exit is about -72 C and 1.26 MPa and at sonic velocity.
Good luck,
Latexman
RE: Simple pressure/temp eq
I just have this stream of high pressure low temp air in large volumes and want to get as much cooling capacity that I can from it - turbine or vortex tube be best? I am thinking a turbine as you would have a larger throughput of air as the vortex you lose half your air.
RE: Simple pressure/temp eq
Good luck,
Latexman