[TRNSYS-users] Problem with type 683 ( Rotary Dehumidifier)

David Bradley bradley at tess-inc.com
Tue Oct 30 08:09:23 PDT 2007

Dear Hindoliya,
   Type683 uses an internal iteration scheme that can sometimes get 
into physically impossible parts of the psychrometrics chart. This 
happens particularly if you are trying to use too low a regeneration 
air temperature. The error that you are getting (MATH DOMAIN) is 
likely the result of Type683 trying to take the log of a negative 
number. I have recently fixed some problems in that component and 
added some more error checking to try and avoid problems like the one 
that you have encountered. Could you please send me the *tpf project 
that you are trying to run (and any other files that I would need in 
order to run the project) so that I can check it?

At 02:24 10/30/2007, hindoliya dev anand wrote:

>Dear Sir
>The componet TYPE 683(Rotary Dehumidifier)of HVAC
>group is not working. It gives run time errors even
>with some simplest project.
>Following Message appeares while running the
>Run time error M 6201:MATH:DOMAIN error
>Kindly suggest the solution of this
>Dr. D. A. Hindoliya
>Do You Yahoo!?
>Tired of spam?  Yahoo! Mail has the best spam protection around
>TRNSYS-users mailing list
>TRNSYS-users at engr.wisc.edu

Thermal Energy System Specialists (TESS), LLC
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E-mail: bradley at tess-inc.com
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