[TRNSYS-users] Problems in using the Creating Equation

[David Bradley [SEL]]

Dear Chun Kwong,
  Edward Halawa's reply that you need to make sure that the variables 
To, Ta, period, and phase need to be defined above the equation for Tin 
is correct for TRNSYS 15. In TRNSYS 16, this is no longer the case. From 
the format of the error message that you included, I believe that you 
are indeed using TRNSYS 15 but in case the above does not solve your 
problem, the "Unrecognized Variable Name..." error comes when TRNSYS 
found one thing when it was expecting another. For example, if you told 
it to expect 14 parameters but then only gave it 8 before starting to 
specify the inputs. We changed a lot of those error messages with TRNSYS 
16 to make them more specific and to give some more information than you 
get in TRNSYS 15.
Kind regards,
  David

h8304506 at hkusua.hku.hk wrote:

>I want to generate a time dependent signal using the "Equa".  However, I get the
>following error message:
>
>
>* Equa:Tin ->Inlet fluid temperature [íu]                                       
>                                                   
>
> ***** ERROR *****        TRNSYS ERROR #  98
> UNRECOGNIZED VARIABLE NAME OR BAD DATA CARD
> TIN                                                                            
>                                                                              I
>am using some intermediate valuables to generate Tin
>(Tin=To+Ta*sin(360*time/period+phase)).  There is no input for the "Equa".  All
>the intermediate valuables are set to some values in the "Equa".  Is there
>anything wrong?  Please advise.  Thank you!
>
>Yours sincerely,
>LEE, Chun Kwong
>PhD Student
>University of Hong Kong
>Department of Mechanical Engineering 
>
>
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>  
>

-- 
David BRADLEY
TRNSYS Engineer
Solar Energy Laboratory - University of Wisconsin, Madison
1500 Engineering Drive
Madison, WI  53706  
United States

ph: +1 608 263 1589
fax: +1 608 262 8464
email: dbradley at engr.wisc.edu