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Re: [TRNSYS-users] Pond component
Kent,
I have experienced exactly the same problem with the Type 230 pond
component as you describe in your previous mail to this list (error
regarding the psychrometrics subroutine), but did not quite understand
Davids suggestion. I am curious if you have found a solution to the problem
by now.
Kind regards,
Knut Erik
trnsys-users-requ
est@engr.wisc.edu
To
03/19/2008 06:03 trnsys-users@engr.wisc.edu
PM cc
Subject
Please respond to TRNSYS-users Digest, Vol 39, Issue
trnsys-users@engr 24
.wisc.edu
----- Message from David Bradley <bradley@tess-inc.com> on Wed, 19 Mar 2008
08:49:07 -0500 -----
To: Kent Beason <kbeason@schlitterbahn.com>
cc: trnsys-users@engr.wisc.edu
Subject: Re: [TRNSYS-users] FW: Pond component
Kent,
I think that the DLL you are running and the Fortran code that you
attached are not quite the same. I had to make a few changes in the source
code before I was able to run the project that you sent. When I did run the
project, I got an error when the variable PRPIPEFILM got set to a negative
number, then got raised to a non integer power during the Type's iteration.
The offending equation is:
NUPIPEFILM=(0.6+0.387*RAPIPEFILM**(1./6.)/(1+(0.559/PRPIPEFILM)**(9./16.))**(8./27.))**2.
I hope that helps...
David
Kent Beason wrote:
I am having trouble with a pond component, Type 230. I keep getting
an error regarding the psychrometrics subroutine, that the subroutine
has been called with a wet bulb temp above the max wet bulb temp for
the given pressure right after the sim starts. Any suggestions on
where the problem may be?
From: Kent Beason
Sent: Monday, February 25, 2008 5:21 PM
To: David Bradley
Subject: Pond component
David,
Attached are the studio file, list file, and source code file of the
pond component. The "replace" command which we last discussed did
eliminate the 2 errors at that time, but now there is 1 error
regarding the Psychrometrics utility routine and the simulation
crashes at .13hour.
Thanks for taking a look at this, and see you tomorrow.
Kent
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