[Bldg-sim] ASHRAE system 8 baseline heating sizing ratio

[yizhao1 at vt.edu]

Hi -
ASHRAE 90.1-2004 requires heating capacity sized with 1.25 ratio in the
baseline. For the system #8, VAV w/PFP, there is no air-side heating sizing
ratio input in eQuest (heat
source is installed at zone level).
How did you model this?

Thanks in advance,

Yu


Quoting Xavier García Casals <xavier.garcia at aiguasol.coop>:

> Hello,
> Which is the best way to deal with a mechanical ventilation system (with
> economizer and heat recovery options) independent from the air cooling
> system?
> To reproduce the physical system, two air systems should be defined for
> each zone, one for cooling (for example split system single zone DX),
> and another for ventilation (each one with its own fans). Would it be
> possible to define two air systems for a zone?
> The other option is to trying to include the ventilation system effects
> into the air cooling system, but it won't lead to a precise treatment of
> both fans.
> What do you think?
> Regards,
>
>
>
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