[EnergyPlus_Support] Re: User Design Load

["sm278424" <shaunmartin@xxxxxxx>]

Hi, thanks,

Unfortunately, that's not the problem.  I set every sizing factor to 1.0. (The template generates the Sizing:Zone object using the Sizing:Parameters object.)

Any other possibilities?

Shaun 


--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "James V Dirkes II, PE" <jim@...> wrote:
>
> Dear Shaun,
> 
>  
> 
> It sounds as though you've got a very large Heating Sizing Factor in
> Sizing:Parameters or Sizing:Zone.  When the User Design Load is larger than
> the Calculated, it means that you've manually sized something instead of
> autosized or used a large Sizing Factor.
> 
>  
> 
> The Building Performance Team
> James V. Dirkes II, P.E., LEED AP, BEMP
> 1631 Acacia Drive NW
> Grand Rapids, MI 49504
> 616 450 8653
> 
>  
> 
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx
> [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of sm278424
> Sent: Thursday, April 14, 2011 4:39 PM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: [EnergyPlus_Support] User Design Load
> 
>  
> 
>   
> 
> Hi,
> 
> In my model I am using HVACTemplate:Zone:WaterToAirHeatPump, and have
> autosized the cooling and heating coil rated capacity.
> 
> The "Zone Heating" output report states that my 
> 
> Calculated Design Load [W] = 14,903 W (which is about right)
> 
> and 
> 
> User Design Load [W] = 208,084 W (which is about 186 kW too high)
> 
> Because the program seems to use the "User Design Load" for total heating
> load on the plant, can you please tell me where this number is entered in
> the input file or how I control its calculation. 
> 
> The documentation is mute on this.
> 
> Thanks,
> Shaun Martin
>




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