Still can't figure this out, how do you properly manage your setpoint?
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, jeannieboef wrote:
>
> Fan Pressure should have zero bearing on unmet loads. Its only
> function is to calculate electricity consumption. even though the
> motor heat will enter the airstream if it is designated as being in
> the airstream, I doubt this is your problem.
>
> That being said, your method for baseline fan power sizing by
> adjustment of the pressure rise looks right.
>
> You are allowed 300 hours unmet load, as long as the design case also
> has 250 or more but less than 300 (deviation of 50), though proper
> setpoint management should keep you under 50 for a good model.
>
> Sent from my iPhone
>> On 17.01.2013, at 10:15, "JFCS" wrote:
>
> > My model gains unmet load hours or time set point not met during
> > cooling operations, when even i increased fan pressure rise of my
> > fans.
> >
> > First I autosized a working model with complete hvac system for my
> > Baseline case as per "G3.1.2.8 Design Airflow Rates". Then I need to
> > adjust my VAV's fan power as "G3.1.2.9 System Fan Power" therefore I
> > need to increase the pressure rise of my fans. Thought i got the
> > correct fan power but the unmet load hours is below 300hours...
> >
> > Any suggestions?
> >
> >
>
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