6 replies to this topic

[azahexane]

Can someone show the solution of this problem, need it much. Thank you.

[Dacs]

I'd say try to solve it yourself and ask the particulars that you might not fully understand with your solution

[azahexane]

i'm just new in this subject, i'd try like 4 hours to solve this, i need it much. please

[Dacs]

Just to nudge you in the right direction:
1. What does adiabatic process imply in throttling? It means you don't lose/gain energy from surroundings.
2. You have upstream conditions (689 kPa / 171.1°C)
3. You have downstream pressure (359 kPa)
4. What's your enthalpy upstream and downstream your valve considering adiabatic process?
5. Use your steam table

Good luck!

[azahexane]

throttling;
T1, P1 ----> H1=H2 ---> T2, P2

calculated n got 169.2 C .. well, steam table does varies bit
thanks for the "nudge"

[Dacs]

You're welcome

Try to do linear interpolation by the way. Maybe it'll give you a better approximation.

[azahexane]

ya ya
really appreciate your help. thanks