Re: [EnergyPlus_Support] How exactly EnergyPlus calculates the primary airflow rate in cooling mode for series PIU

["Jean Marais jeannieboef@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>]

Normally, maximum rates for massflows through damper or valve type equipment are set by the maximum rates required during the design day simulations + the user specified sizing factor. The airflow rates are, of course, quite dependent on the user specified delivery air temperature and humidity (because an ideal air system is used for this part of the sizing simulations, not the detailed equipment specified).

On 24 Sep 2015 11:55 pm, "Solomon Yin solomonyp@xxxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

 

Hi guys,

I have a question on the calculation of primary airflow rate for series PIU when the cooling is required. A brief calculation procedure is introduced in the engineering manual page 406. My question is what are the other constrains that regulate the primary airflow rate besides the zone load and the minimum primary air fraction that you manually set?

Thanks

Solomon

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Posted by: Jean Marais <jeannieboef@xxxxxxxxx>

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