BWR equation of state
BWR equation of state
(OP)
Does anyone know where I might find a worked example using this specific EOS? I have made a spreadsheet for using it to calculate thermodynamic data (I am not a thermo guy, by the way) but the answers it gives me don't appear to make sense. I'm only really hunting for a mistake in my spreadsheet, but I'm struggling to do so without something to compare it against. I have had a good google at it, but can't find anything!





RE: BWR equation of state
Also, since you state you're wanting to check for a mistake in your spreadsheet you might want to (1) provide the equation you're using (in Step 2, Process TGML will give you codes for including various symbols), (2) provide your input conditions, and (3) provide your answer.
Or you could just upload the spreadsheet by using the link to Engineering.com (see Step 3: Attachment)
Patricia Lougheed
Please see FAQ731-376: Eng-Tips.com Forum Policies: Eng-Tips.com Forum Policies for tips on how to make the best use of the Eng-Tips Forums.
RE: BWR equation of state
Sorry for the lack of information.
I am trying to use the Benedict-Webb-Rubin equation of state to work out properties for n-Pentane.
My reasoning for thinking that my spreadsheet is wrong is as follows:-
* Density of air @ 20 deg C and 1 atmosphere is approximately 1.2 kg/m3.
* Specific gravity of n-Pentane is 2.49 (so density = 2.49 x that of air = 3kg/m3?).
* If I enter 3 kg/m3 as the density and 20 deg C as the temperature (293.15 Kelvin) for n-Pentane, shouldn't I expect the pressure to be 1 atmosphere? Instead I get 11.69 bar absolute.
Apologies if I've done something really stupid folks!
RE: BWR equation of state
Patricia Lougheed
Please see FAQ731-376: Eng-Tips.com Forum Policies: Eng-Tips.com Forum Policies for tips on how to make the best use of the Eng-Tips Forums.
RE: BWR equation of state
RE: BWR equation of state
I'll have a good look through that.
RE: BWR equation of state
Good luck,
Latexman
RE: BWR equation of state
I used constants for n-pentane from the same text and I'm pretty sure now that one or more of these must be wrong in the text.
(Hopefully) I can use the info dcasto gave me and convert it to mass rather than mol basis, and then SI rather than English units.