[EnergyPlus_Support] Simulation Parameters, Zone Vol Capacitance Multiplier

[Linda Lawrie <linda@xxxxxxxxxx>]

What is the zone volume capacitance multiplier? What values should be
used? How this influences the results and stability of
simulation?

The zone volume capacitance multiplier should generally be 1. 
That is, 1 Zone Volume of Air will be used as the capacitance
involved.  In a system, there is also the air in the duct work and a
contribution of the ductwork itself, etc. as the real capacitance
involved in the air heat balance.  This is what the Zone Volume
Capacitance Multiplier is meant to address.  But, there has not been
instability in the zone/system solution to mandate this to be above
1.0.  The capability is still there.  Typically, the
capacitance Cz would be that of the zone air only.  However, thermal
masses assumed to be in equilibrium with the zone air could be included
in this term.

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