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[EnergyPlus_Support] Natural Ventilation: Surface convective heat transfer coefficient or algorithm

Dear all,

I am looking for advice on if there is a right bild-in convection algorithm (inside surface) to utilize for naturally ventilated rooms including thermal mass (e.g. concrete ceiling) im summer for durinal cooling. I think non of the algorithms take into account the increased air change rates for this strategy (lets say 5-15 ACH) and are modelled as naturally covection rooms with no external airflow? If I use the Adaptive Convection Algorithm the floor at night is arround 1,7 W/m2,K and the ceiling is 0,5 W/m2,K, which seems low.

If there is no such algorithm, may be a reference or formula on how to calculate them (for EMS application)?

Thank You



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