Excel library for process calc's including distillation

[cstaff]

thanks tmander,
is that a cloud or local network ?

[tmander]

actually we have Prode Properties installed on a local server,
we have developed std. input forms for solving a range of problems as
-vapor-liquid or liquid-liquid separator sizing/rating
-PSV sizing/rating
-blowdown simulation
-pipeline sizing / rating
-compressor simulation
-other procedures are under development

I think it should be possible to install the Prode Properties library on a web server,
however that is not (at present) our case.

[cstaff]

thanks,
it seems a interesting application,
are you storing in a database (SQL) or Prode Properties files ?

[asanter]

this thread interests me, too.
Actually we have PRODE PROPERTIES on (3) stand alone computers but we plan to move to a network application.

[hans23]

I have PRODE PROPERTIES 64 bits working with EXCEL 2010 and Windows 7,
also I have MATLAB (working with PRODE PROPERTIES),
when moving from 32 to 64 bit Windows 7 I decided to update all the software so I have not many problems to report,
I would suggest the same to avoid conflicts (32 vs. 64 bit versions of the library)

[dbert]

"when moving from 32 to 64 bit Windows 7 I decided to update all the software so I have not many problems to report"

indeed, when possible, that is a good practice,
unfortunately working with 32 and 64 bit applications I have to manage both 32 and 64 bits versions of Prode Properties :-(

[carlo.stenali]

we have PRODE PROPERTIES 64 bits,
according my tests the speed is about twice the 32 bits version.

[mpor]

I have to size several PSV for two phase flow case,
procedure is based on HEM (the isentropic nozzle model included in PRODE PROPERTIES),
my question is about discharging piping,
I have calculated (with PRODE PROPERTIES) the critical speed for gas+liquid in discharging line,
my problem is that in discharging line I have values about 50% of calculated speed of sound, could that be a problem ?
Should that mean that we have to redesign the piping ?
Could you advise ?

[carlo.stenali]

with those speeds and densities you may go into troubles,
have you verified energy values in critical sections as elbows etc.?
Std. practice is to keep match number in main header below 0.5
but this is a general indication (must be verified for specific cases as said)

[mpor]

thanks,
could you suggest a criteria to calculate maximum stress in lines when a PSV discharges ?
Is the criteria to limit match number in main header below 0.5 based on maximum allowable stress on piping ?

[rense]

mpor,
perhaps you have noticed the answer by Carlo on another group, I paste here for interested readers

while a value of 0.5 may be acceptable (that depends from several factors as density etc.)
you may evaluate F on a determined section of piping as

F = p*area + dens*area*v*v/g

as you see there is a static component (p*area)
and a dynamic component (dens*area*v*v/g)

from this you can calculate the stress.

To what said by Carlo I would add that API std. is a good source of information about this topic.

[mpor]

thanks rense

"perhaps you have noticed the answer by Carlo on another group, I paste here for interested readers

while a value of 0.5 may be acceptable (that depends from several factors as density etc.)
you may evaluate F on a determined section of piping as

F = p*area + dens*area*v*v/g

as you see there is a static component (p*area)
and a dynamic component (dens*area*v*v/g)

from this you can calculate the stress.

To what said by Carlo I would add that API std. is a good source of information about this topic."