Re: Water tank

[David Bradley <bradley@xxxxxxxxxxxx>]

Eileen,
  Most of the tank models in TRNSYS are "constant
volume" tanks meaning that whenever fluid is drawn out of the tank,
an equal amount is drawn into the tank so that the volume of liquid
remains constant. If you need a variable volume tank model, then you
might consider Type39 in which the inlet and outlet flows are not
necessarily matched.
Kind regards,
  David

At 10:54 PM 4/24/2004 +0200, you wrote:
> Dear
> trnsys users,
> I'm working on a water pumping system, and I'm
> trying to model a simple water tank.
>  
> It must have:   INPUT - Water pumped
> to the tank
>                      
> INPUT - Requested water by a load ( and so water from the
> tank)
>                      
> PARAM - Tank Capacity
>                      
> OUTPUT - Quantity of water in tank
>  
> My problem is: how can I handle the increase
> and the decrease of water in the tank in trnsys time
> iterations?
> I mean, in a given moment there will be some
> water to the tank, some water from the tank and a quantity of water wich
> already was in the tank at the simulation previous time.
> Have I to use some subroutine call's array like
> INFO(10) or ICNTRL?
>  
> Thank you, Eileen.

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