- #1
jason.bourne
- 82
- 1
air enters an adaibatic nozzle steadily at 300 kPa, 200 degree celcius and 30m/s and leaves at 100 kPa and 180 m/s.
find the exit temperature?
when m using energy balance equation: h1 + [ (v1)^2 / 2 ] = h2 + [(v2)^2 / 2 ]
i get the answer 184 degree celcius.
but when i use the other relation i.e, pressure temperature relation
[ T1 / T2 ] = [ P1 / p2 ]^ ((k-1)/k) (i used k = 1.4)
i get very different values of temperature. is this equation not valid?
why m i getting different answers?
is this pressure temperature relation only valid for reversible processes?
find the exit temperature?
when m using energy balance equation: h1 + [ (v1)^2 / 2 ] = h2 + [(v2)^2 / 2 ]
i get the answer 184 degree celcius.
but when i use the other relation i.e, pressure temperature relation
[ T1 / T2 ] = [ P1 / p2 ]^ ((k-1)/k) (i used k = 1.4)
i get very different values of temperature. is this equation not valid?
why m i getting different answers?
is this pressure temperature relation only valid for reversible processes?