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Re: [EnergyPlus_Support] Heat balance model: Zone air mass
Equation 2 is the heat balance equation without the impact of HVAC
equipment. So this equation is not impacted by airflow through
inlet/outlet nodes in the zone. The actual air mass flow rates used are
shown in the equation as Mi (interzone mixing caused by mixing and
cross-mixing objects) and Minf (infiltration). Each of these mass flow
rate terms represent the mass flow rate of air "entering" each zone and
are specified by the user. The impact of the zone inlet node mass flow
rate on the heat balance is shown in Equation 5 as Msys. This is the
actual mass flow rate "entering" the zone through the zone inlet node
and is a result of HVAC system operation.
anarui.oliveira wrote:
>
> Hi.
>
> A question about E+ heat balance model:
> - What is the actual air mass (I believe it is hidden in "Cz" in Eq.
> (2)?) E+ considers for each zone? Is it constant? Is it affected by any
> of the airflows that use inlet/outlet nodes or zones nodes?
>
> Regards,
> Ana.
>
>
--
Richard A. Raustad
Senior Research Engineer
Florida Solar Energy Center
University of Central Florida
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