Dont send me e- mail !! I dont want to see ur words about
trnsys !!!
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On Per, Kas 20, 2014 at 4:32 PM, Ben Heymer
<bheymer@gmail.com <mailto:bheymer@gmail.com>> wrote:
You should look through your "Result" file for the
source of the error.
A common cause of errors of this type is convergence.
Make sure you
have enough volume in your water loop for at least 1
timestep of water
flow. Sometimes it's also helpful to connect the mass
flow output of
the pump right back to the mass flow input.
As a last resort, you can relax the convergence
parameters and error
thresholds in the control cards.
Ben Heymer, PE
On Thu, Nov 20, 2014 at 3:52 AM, Michael Stochniol
<stochnio@mail.hs-ulm.de> wrote:
> Hallo everyone,
>
> im trying to create a control function using
equations with logic operators for the control of a
variable speed pump, in order to adjust the massflow
trough the pump. I wrote a control funktion and plotted
it without connecting it to the pump and it seemed to
work right. But if i am conecting it to the pump my
simulation freezes after around 700 timesteps or less. I
am trying to create solar domestic hot water system. The
question is, is it possible to create this kind of
control circuit with equations ? I have similar problems
with every control loop i am trying to create this way.
The math should work but implemented in TRNSYS (TRNSYS
17) the simulation stick somewhere.
>
> I am no experienced user so maybe someone could give
my some advise how to implement this kind of control
functions right?
>
> i am very grateful for any help or ideas.
>
> thanks in advance
>
> Michael Stochniol
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> TRNSYS-users@lists.onebuilding.org
>
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