[TRNSYS-users] (no subject)

[Jason Glazer]

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Jason

On 11/20/2014 9:23 AM, haydar kepekçi wrote:
> Dont send me e- mail !! I dont want to see ur words about
>  trnsys !!!
>
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> <https://cloudmagic.com/k/d/mailapp?ct=pa&cv=5.1.6.5&pv=4.3>
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>
> On Per, Kas 20, 2014 at 4:32 PM, Ben Heymer
> <bheymer at gmail.com <mailto:bheymer at 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 at 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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-- 
Jason Glazer, P.E., GARD Analytics, 90.1 ECB chair
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