I am modeling a 40-story residential building located in Miami and I am following the Energy star “Multifamily high rise program, Version 1.0, Revision 03” simulation guidelines. The designed outdoor air rate is 60% higher than the OA required by ASHRAE 62.1 2010.
The guideline specifies:
“126.96.36.199 Whole-unit ventilation the baseline building design whole-unit ventilation rates in all dwelling units shall be modeled using the same rates as the Proposed Design, without exceeding ASHRAE 62.2-2007 recommended rates by more than 50%. If the whole-unit ventilation in the Proposed Design exceeds ASHRAE 62.2-2007 rates by less than 50%, the Baseline shall be modeled the same as the Proposed Design. However, if the ventilation in the Proposed Design exceeds ASHRAE 62.2-2007 by more than 50%, the Baseline shall be modeled at rates that are no more than 50% greater than the rates recommended by ASHRAE 62.2-2007.”
“188.8.131.52 Mechanical Ventilation Rates. The mechanical ventilation rates may differ between Baseline Building Design and Proposed Design if the Proposed Design has specified rates more than 50% greater than ASHRAE 62 recommendations, resulting in the energy penalty associated with over-ventilating.”
Do these statements apply to my project? Can I model the baseline with OA supply 50% higher than the specified in ASHRAE 62.1 2010?