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[EnergyPlus_Support] Re: Extremely High Cooling Load due to Ventilation

Hi all.  I've got a similar situation.  When I look at the Results Viewer under "Average Outdoor Air During Occupied Hours", infiltration shows 286.153 ach for each of the 4 zones! (All with exterior walls and window subsurfaces.) How did that happen?  I used the Outpatient Facility schedules without modification.  Is this the result of some basic oversight on my part.  It's just a test building with ASHRAE constructions.

Thanks!
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Ng Poh Khai <ng_khai@...> wrote:
>
> 
> Dear All, I am trying to do a parametric simulation on the Window-Wall-Ratio of a semi-transparent BIPV.  I started with 90% WWR just to make sure that all the values/results make sense.  From the 90% WWR simulation run, i received a ideal cooling loads of 77555 kWh/m2 of energy consumption which is too high! From my investigation, I believe that it is due to my zone ventilation or infiltration. As my zone infiltration is only 0.1ACH, i suspect it is the zone ventilation. Without the zone ventilation, the cooling load is only 394 kWh/m2. My input fields for ZoneVentilation:DesignFlowRate are described briefly: Schedule: 0800 - 2000 hrsDesign Flow Rate Calculation Method: Flow/AreaFlow Rate per Zone Floor Area: 2.3 m3/s-m2Ventilation Type: IntakeFan Pressure Rise: nilFan Total Efficiency: 1Constant Term Coefficient: 1 The rest of the fields are default values when I created the object.  Can anyone explain to me where did I go wrong to obtain such a high cooling load? Thanks and Best Regards,Poh Khai
>




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