[TRNSYS-users] Equation Problem

[David BRADLEY via TRNSYS-users]

Hsein,

  Without seeing the project file it is not really possible to know what 
the problem might be. The problem might not be P_LOAD; you might look at 
how the other variables (Q_heating, Q_DHW, Q_cooling, m_H2, and LHV) are 
defined. If there are not connections to those variables or if those 
variables are not defined in other equations then you'd get the attached 
error.

kind regards,

  David



On 05/24/2016 05:05, Hsein Moussawi via TRNSYS-users wrote:
>
> Hi everyone,
>
>
> I am trying to calculate the following equation:
>
>
> Eff_energy = (P_net+Q_heating+Q_DHW+Q_cooling)/(Max(0.000001,m_H2)*LHV)
>
>
> I made a link between P_load (which is being calculated in different 
> equation) and P_net, but I am still getting this problem:
>
>
> [
>
> *TRNSYS Message     20 : The referenced variable used in this equation 
> has not been defined in the TRNSYS input file. The equation begins 
> with the string in "reported information"*
> *Reported information  : EFF_ENERGY = (P_LOAD*
> ]
>
> In fact I supposed another equation : kkkk = P_load and it gave me the 
> output correctly without any problems, so I am wondering what is the 
> problem!!!
>
> Please HELP!!! Any hint would be appreciated...
>
>
>
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> TRNSYS-users at lists.onebuilding.org
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI  53703 USA

P:+1.608.274.2577
F:+1.608.278.1475
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com

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