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[EnergyPlus_Support] Re: open expansion tank

There is not such component in Energyplus. Pressure simulation is secondary in E+ and much based in input data for losses in components. 
I also agree in that you should define the objective of including that object (thermal losses, pressure simulation, circuit volume capacitance...) so that you may define a equivalent model. I am not sure what kind of result you are looking for. Those tank are intended to absorb water thermal expansion. In a typical E+ simulation, those effects are not accounted...

Regards,

Germán.

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Tooran T <t.t111ir@...> wrote:
>
> sorry what do you mean?
> i modeld two loops that these loop have water heater , 
> one for DHW and another for  hot water for radaitor .
> but i need to simulate open expansion tank.
> 
> 
> ________________________________
> From: M�¡rio <mneves32@...>
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx 
> Sent: Friday, May 11, 2012 3:20 PM
> Subject: [EnergyPlus_Support] Re: open expansion tank
> 
> 
>   
> what is your objective?
> 
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Tooran" <t.t111ir@> wrote:
> >
> > Dear team
> > I want to model a building that have an "open expansion tank". As you know, an "open expansion tank" is a storage tank at the roof of buildings that is at atmosphere pressure and is used to adjust the pressure of the central heating systems. It means when water became hot its volume increases, and this increased volume go to" the open expansion tank" to prevent from increase of the loop pressure and when water became cold and it's volume decreased, the water leave the "open expansion tank" to ncrease the pressure and prevent from the minus pressure.
> > Could you please help me and say which object is good for simulation of "open expansion tank" as described above?
> > Regards
> >
>




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