Jump to content



Featured Articles

Check out the latest featured articles.

File Library

Check out the latest downloads available in the File Library.

New Article

Product Viscosity vs. Shear

Featured File

Vertical Tank Selection

New Blog Entry

Low Flow in Pipes- posted in Ankur's blog

Latent Heat For Multi Component Mixture


This topic has been archived. This means that you cannot reply to this topic.
6 replies to this topic
Share this topic:
| More

#1 rajprocess

rajprocess

    Veteran Member

  • Members
  • 34 posts

Posted 05 October 2013 - 06:11 AM

how can we caluculate latent heat for a multi component mixture.....

Is there any soft ware available for getting latent heat for multi component mixture....

 

please explain in detail..

 

Thanking you inadvance ,

rajeev



#2 PaoloPemi

PaoloPemi

    Gold Member

  • Members
  • 482 posts

Posted 05 October 2013 - 08:48 AM

you can calculate latent heat as

 

SUM(xi*hvi)

where xi is weight fraction of component i

and hvi is latent heat of component i

 

hvi can be found in tables or calculated for example from a specific correlation (see DIPPR)

or by differentiation of a vapor pressure correlation

 

most simulators calculate latent heat as difference

H(dew point) - H(bubble point)

 

where a EOS or equivalent model calculates departure (for H) from ideal condition,

 

for wide boiling mixtures this method returns average values

different from dQ/dw

(where dw is a small fraction of liquid which vaporizes)

to calculate dQ/dw there are different procedures,

for example you can add a little amount of heat,

solve phase equilibria and calculate dQ/dw

from difference in vapor and liquid enthalpies.

 

You may calculate these values with a simulator,

I use PRODE PROPERTIES but any equivalent

sofware can be useful.



#3 rajprocess

rajprocess

    Veteran Member

  • Members
  • 34 posts

Posted 05 October 2013 - 12:13 PM

thankyou paolo...

i will go with SUM(xi*hvi)



#4 abbasek23

abbasek23

    Brand New Member

  • Members
  • 9 posts

Posted 06 May 2014 - 07:02 PM

is hysys use DIPPR Equations



#5 Padmakar Katre

Padmakar Katre

    Gold Member

  • ChE Plus Subscriber
  • 987 posts

Posted 09 May 2014 - 01:49 AM

how can we caluculate latent heat for a multi component mixture.....

Is there any soft ware available for getting latent heat for multi component mixture....

 

please explain in detail..

 

Thanking you inadvance ,

rajeev

Any commercial simulator will do this for you at given P,T conditions for defined composition.



#6 hakeemniyas

hakeemniyas

    Brand New Member

  • Members
  • 1 posts

Posted 19 November 2014 - 09:35 PM

Whether this will be applicable to both latent heat of fusion & evaporation?



#7 serra

serra

    Gold Member

  • Members
  • 310 posts

Posted 20 November 2014 - 02:52 AM

yes,

if you know the heat of fusion of individual components,

solid models such as those included in Prode Properties

adopt those values (when available).






Similar Topics