[EnergyPlus_Support] Re: CAV with VAV

["atmostten" <bryce.luna@xxxxxxxxx>]

Jason,

Thank you for taking the time to respond to my question. I tried something similar to your suggestion awhile ago but ran into an error I couldn't get past. To make sure I didn't miss anything I'll attempt exactly your suggestion this time.

Thanks,
Bryce

 

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Jason Kirkpatrick <jason.alan.kirkpatrick@...> wrote:
>
> Bryce,
> 
> this setup should be possible. Start with this:
> 
> For packaged variable air volume systems using direct-expansion cooling
> include:
> HVACTemplate:Thermostat
> HVACTemplate:Zone:VAV:FanPowered  (one per zone)
> HVACTemplate:System:PackagedVAV   (one per AHU)
> HVACTemplate:Plant:HotWaterLoop (if HW Reheat Coils are used)
> HVACTemplate:Plant:Boiler (If HW Reheat Coils are used)
> 
> this will give you a variable volume dx system with parallel or series fan
> powered vavs at the zone level
> 
> run this simulation... EnergyPlus will create an input file with the
> HVACTemplates expanded out into their component objects. This file has the
> type '.expidf'
> 
> Rename this file to be Filename_exp.idf
> 
> Now you have the expanded HVACTemplate file which you can modify like any
> other EnergyPlus input data file.
> 
> Now Remove the Fan:VariableVolume object for the AHU Supply Fan and replace
> it with a Fan:ConstantVolume one
> 
> Also be sure to change the minimum system air flow ratio in the
> 'Sizing:System' object to 1.0
> 
> be sure to search the file for any instances of Fan:VariableVolume and
> replace them with Fan:ConstantVolume. This also occurs in the main branch
> of the AHU.
> 
> Hope this helps.
> 
> Jason
>




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