OpenStudio Increasing Load Convergence [closed]

asked 2015-12-21 09:02:47 -0600

Dustin
1065 ●3 ●16

Having troubles with my model and believe the run time is being increased by the errors that are being written. Is there any way in OpenStudio to increase the "Load Convergence Tolerance Value"? It seems that when I increase it the value didn't actually increase.

* Warning * ControlCompOutput: Maximum iterations exceeded for ZoneHVAC:Baseboard:RadiantConvective:Water = CEILING 5NW * ~~~ * ... Load met = 3002.90162 W. * ~~~ * ... Load requested = 3007.63750 W. * ~~~ * ... Error = 0.15746170 %. * ~~~ * ... Tolerance = 0.10000000 %. * ~~~ * ... Error = (Load met - Load requested) / MAXIMUM(Load requested, 100) * ~~~ * ... Actuated Node Mass Flow Rate =4.441897944E-002 kg/s * ~~~ * Environment=RUN PERIOD 1, at Simulation time=01/01 00:00 - 00:15

I would expect the tolerance value to increase from .1% because I have changed the "Load Convergence Tolerance Value" in simulation settings multiple times with no change. Any pointers towards what I can do to slightly increase this value would be awesome.

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Closed for the following reason the question is answered, right answer was accepted by Dustin
close date 2015-12-21 09:53:23.648438

Comments

I did confirm that we write "Load Convergence Tolerance Value" To the "OS:SimulationControl" object in the OSM file (if you change the default value) and that in turn is written to the "Building" object in the IDF. You may want to confirm the value in your IDF. There may be another tolerance setting that relates to your error?