Dear all,
I have an atrium with
temperature controlled (on/off) natural ventilation in TRNSYS with TRNFLOW. I
use a 3stage room thermostat type 8b to control ventilation openings at the roof
and on the 1st floor. The control signal of the type 8 gives stranges results
though and tends to oscillate for no appearant reason. When I use Powells
method, the signal is okay but somewhere halfway the simulation (begin of
summer), I get error 206 at multiple times:
TRNSYS ERROR # 206
THE SOLUTION CAN NOT BE
FOUND AT TIME 2532.62
Finally resulting in
TRNSYS ERROR # 204
THE NUMBER OF
UNSUCCESSFUL TIMESTES EXCEEDS LIMITS
Does anyone have an
idea what can be wrong? Decreasing the timestep has no effect; application of a
deadband also does not help; the errors occur earlier in the simulation when I
use a larger deadband...
Kind regards
Stefan de Kool
Cauberg-Huygen Raadgevende Ingenieurs
Lokatie Rotterdam
