All Activity - Engineer Boards
Engineer Boards

# All Activity

1. Today
2. ## EB Mafia

So who saved who I feel like JayKay prob saved rb and rb tracked me or txj?
3. ## EB Mafia

No one was killed during the night. Remaining players: @jean15paul_PE @RBHeadge PE @DuranDuran @tj_PE @MadamPirate PE @JayKay PE @txjennah PE @LyceeFruit PE
4. ## When is Steam not an Ideal gas?

No. Just never use ideal gas assumptions for steam. It’s safer that way. Use tables or a Mollier diagram. For this particular problem: If you start at 3 psia and compress, there is some liquid present at the “inlet” therefore that liquid-vapor mixture is far from being an ideal gas. So that’s a huge no-no. Even if you start with saturated or slightly superheated vapor at 3 psia (a condition in which the steam arguably behaves like an ideal gas) you are taking it to a condition of pressure high enough so the deviation from ideal gas behavior is significant, so whatever it is you’re calculating is likely to be wrong. Just please drop this idea of wanting to use Pv=RT for steam in power problems. Regarding psychrometrics: in typical HVAC applications, the partial pressure of water vapor is very small so moist air is modeled as a mixture of two ideal gases: dry air and water vapor. If you read in a thermo book the derivation of the equations used to plot the psychrometric chart you will see they model the water vapor as an ideal gas. But, you don’t have to worry about this, just use your psychrometric chart. So let me repeat: become familiar with the Mollier diagram and the steam tables. Use those for steam power problems.
5. ## EB Mafia

Dr evil owns Starbucks
6. ## EB Mafia

Lol knowing who it is is fantastic. 👻

TRIPLE.
8. ## EB Mafia

Love the shenanigans with y’alls and VERY pleased I contributed...absolutely nothing.
9. ## EB Mafia

I *TOLD* you I wasn’t maf...until I said I was and wasn’t. Told you I was kamikaze.
10. ## When is Steam not an Ideal gas?

Thank you for the explanation. The use of psychometrics to check for ideal gas is new to me, thanks. If I swap the inlet/outlet conditions and replace the turbine with a compressor, will the constant entropy for ideal gas model work?. Since the inlet condition can now be approximated as an ideal gas? I guess my follow-up question is, if the inlet condition can be modeled as an ideal gas, then I can use the constant entropy equations for ideal gas to calculate the outlet condition.

@txjennah PE
12. ## EB Mafia

I coulda told you that was a bad choice.
13. ## EB Mafia

The suspense!!!

15. ## Horse is to stable

Animal 😬, I don't even play!
16. ## EB Mafia

If I remember I'll comment after the game's done. I'm currently dead will not comment. 👻
17. ## EB Mafia

I wouldn't say that. The choice was down to three people. Maybe two people if you go by TJ's priors. Too few people to analyze that days votes, and too late in the day to try to figure stuff out. Maybe if we had this info midday we could have divined something, but really it was a down to chance. No matter, the town wins tomorrow night.

Crossing
19. ## EB Mafia

Oh, if I was mafia, today I absolutely would have come out with a lie about being JoaT. Town is closing in on you. Nothing to lose. Also with no PMs, it's MUCH easier to tell a lie that fits in with all the known facts.
20. ## EB Mafia

Double post.

Assessment matrix
22. ## EB Mafia

i know. i hate this game so much but also love it when i dont go with my gut feelings i regret it when i do i regret it lmao

We suck!
24. ## EB Mafia

sorry @squaretaper LIT AF PE i definitely didn't help you not get dedded
25. ## EB Mafia

but yes pls investigate me or whatever so jaykay can be sure i'm not maf finally
26. ## EB Mafia

it jennah. againnnnn lol

×
×
• Create New...