27 replies to this topic

[IllusionistXY]

PingPong:

 

I guess you are right cause I used a software that calculated the dew point but wasn't able to calculate the bubble point. It gave an error.  Is it possible to explain why a bubble point wouldn't exist?  is it because when speaking about bubble point, one should have a mixture of liquid components?!  in other words, H2 also need to be in a liquid state? 

 

It would be great if you could  recommend a reference so that I can better understand this.  I am not expert in thermodynamics unfortunately and I need to finish these calculations.

 

And last thing, say that I know that outlet temperature of the condenser.  Do I  use this temperature to calculate the enthalpy of condensation or do I use the dew point temperature? 

 

Thank you in advance .. 

[breizh]

hi,

you may find answer using this link .

http://www.questcons..._and_dew_points

 

Hope this is helping you

 

Breizh

[PaoloPemi]

you should open a different thread when introducing a new problem :-)

 

anyway, I agree with PingPong and others, many solutions available, you can, for example,  solve a flash operation with a specified amount of a component in vapor or liquid or solid phase...

or you can (as suggested by Breitzh) calculate a VLL (three phases)  phase envelope / diagram to identify the point of incipient condensation / evaporation of third (water) phase,  see for example

 

https://www.prode.co...aseenvelope.htm

 

but there are many other examples at cheresources.com ...

 

you should first determine the problem, then we can help to solve it...