[EnergyPlus_Support] Re: Manual HVAC Sizing Error

["energy.partners" <energy.partners@xxxxxxxxx>]

Jean,

Thanks so much for your assistance regarding this - we really do have ourselves in a pickle with our Client wanting to submit their building proposal before Christmas and we're quite a bit out of our depth here.

You suggestions have worked regarding setting the sizes of the zone (cooling) coils.  Our HVAC designer has sent us the sizing of the HVAC equipment and as much as we fiddle E+ still spits out the same HVAC sizing, with the coils sizes as per our input.  We suspect the designer has oversized the equipment as it is almost twice the size that E+ calculates but that's OK.  But we'd like to input this specified sized equipment.

Regards,

Andrew Bell

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "jeannieboef" <jeannieboef@...> wrote:
>
> you'll find that at a delivery air temperature of 22 degrees, you won't achieve much more than 2 W/m2 of cooling at normal room air change rates lower than 4 ach. So either increase the air flow rates tremendeously or decrease the "off-coil" temperature or delivery temperature to something more in the lines of a standard fan-coil, say 14 degrees C. The default sensible heat removal ratio for your problem coil may also be adjusted, meaning you say that more heat is removed in the condensing or latent heat removal potencial of your coil.
> 
> Do is this cooling coil in your central AHU or in a zone equipment?
>




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