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[EnergyPlus_Support] Re: Time Setpoint Not Met and Zone Multiplier

Hello, 

Acording to the IOR:

"Field: Multiplier
Zone Multiplier is designed as a "multiplier" for zone loads. It takes the calculated load for the
inputted zone and multiplies it and sends the multiplied load to the attached system to meet
the demand. The system will have to be specified to meet the entire multiplied zone load and
will report the amount of the load it can meet in the Zone/Sys Sensible Heating or Cooling
Energy/Rate report variable. The default is 1."

So are you sure you don´t have any individual, field restricted to responde only to a single zone?

MN

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Carolina Galeazzi <caro_poa@...> wrote:
>
> Dear All, 
>  I am simulating
> an existing building, with 14 floors in total but 8 of them are identical
> floors. For these, I have modeled one typical floor and used a multiplier of 8 in each zone to represent
> all floors. However, I was having huge time setpoint not met (I am autosizing
> all capacities and flow rates). I simulated the building again without the
> multiplier, this has decreased the setpoint to below 300 unmet hours, as it
> should be regarding ASHRAE 90.1.
>  Please
> correct me if I am wrong, but I understand that only the zones were multiplied,
> not the AHU that I have for each floor, because the multiplier was defined
> within the zone.
>  My question
> is: Is there a way that I could use the multiplier also for the AHUs that are
> connected to these multiplied zones, to have a correct result of total load? Or
> should I not use multiplier and multiply the load of the typical floors by 8 â??by
> handâ?? (not sure if this is acceptable though)?
> Thank you in
> advance for your feedback and suggestions,
> Carolina
>




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