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[TRNSYS-users] Equation Problem



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...