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[TRNSYS-users] TRNSYS Message 441 and 437



Dear TRNSYS users,

 

I made a project of a solar cooling system and it seems to correctly run during a yearly simulation, but in the list file appear a lot of warnings like the following:

 

TRNSYS Message    441 : The inputs to the listed units have not converged at this timestep. The values at the last iteration will be used and the simulation will proceed.

    Reported information  : UNITS: 40  24  23  25  41  27  52

If I modify the simulation start and stop time in order to a have a shorter period of time, the simulation give a enormous but different numbers of warnings and the following error:

*** Warning at time       :      4144.000000

    Generated by Unit     :    45

    Generated by Type     :    16

    TRNSYS Message    437 : The total radiation calculated for one of the surfaces has exceeded the solar constant. The component solar quantities (beam and diffuse) have been adjusted such that the sum is equal to the solar constant

    Reported information  : Sloped Surface Radiation Error

  

*** Fatal Error at time   :      4144.000000

    Generated by Unit     : Not applicable or not available

    Generated by Type     : Not applicable or not available

    TRNSYS Message    450 : The maximum number of warnings allowed per simulation has been exceeded. Please fix these warnings or increase the limit on the number of warnings allowed per simulation (LIMITS command)

    Reported information  : Not available

 

I’m not able to locate the problem. I think it has no sense to increase the maximum number of warnings allowed per simulation..

Thanks to all,

 

--------------------------------------------------------------
Pietro Finocchiaro
Dipartimento di Ricerche Energetiche ed Ambientali
Università di Palermo
Tel: +39 (0)91 236277
E-mail: finocchiaro@dream.unipa.it