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[EnergyPlus_Support] Re: baseboard : radiant convective :water

do you know how energyplus calculate capacity of baseboard ?

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Tooran T <t.t111ir@...> wrote:
>
> yes i think you are right
> thanks for your replying
> 
> 
> ________________________________
> From: fokus55555 <michael.dahl.knudsen@...>
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx 
> Sent: Thursday, May 3, 2012 1:22 PM
> Subject: [EnergyPlus_Support] Re: baseboard : radiant convective :water
> 
> 
>   
> I previously had the same problem where I wanted a temperature difference between water inlet and water outlet on 30 degree when water inlet temperature was 70 C. I never found a way to do it but I think I know the reason why the temperature difference is almost constant.
> I think E+ assumes that the air mass flow through the baseboard is about 1,25 times the water mass flow (even though the Engineering Documentation says 2 times).
> This means that if the water mass flow gets smaller because of reduced heat load in the zone then the air mass flow also gets smaller accordingly. This has the effect that the temperature difference is the same.
> 
> Best regards
> Michael
> 
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, M�¡rio <mneves32@> wrote:
> >
> > Hello, 
> > 
> > Doesn´t the tempreture diference dependo on oyur heating load?
> > 
> > What are your water plant setpoint tempretures?
> > 
> > MN
> > 
> > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Tooran" <t.t111ir@> wrote:
> > >
> > > Dear members ,
> > > i use baseboard : radiant convective :water in my model ,
> > > and i want to have difference between inletwater temperature and outletwater temperature is around 10-15 C in the baseboard,
> > > i dont know in which parameter i can do this ?
> > > i changed different parameter in this field ( baseboard : radiant convective :water )but in result always there is 10-11C difference
> > > could anybody help me?
> > > thanks
> > >
> >
>




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