doesn't that formula depend on absolute temperature
like kelvin or so? where zero degree is minus 459 degree F or minus 273
Celsius.
the ratio of expansion should be something like:
inlet air: 20
degree Celsius (68F) or 293 Kelvin
outlet air: 50 degree celsius (122F) or
323 Kelvin
then
323 over 293 for a change in temperature gives
then
the Volume change of more like 1.2
there is some additional expansion due to the pressure
difference.
Regards
Marko
Marko;
You got me
there. You’re right, it needs to be the ratio of absolute temp.
That gives a ratio of inlet to outlet for the 80 F in and 135 F out of
about 1.1. Also for the case you give; 323/293 is 1.1; not 1.2, or did
you factor in some additional volume change for pressure.
Gees .. you mean
now I have to go back and rework my rad outlets?
Al