[BLDG-SIM] static pressure reset control

[Fred Porter]

It would be the same for PIU or any VAV systems in DOE2.x:

I use a spreadsheet programmed with the algorithms of Englander and
Norford, outlined most clearly in an ACEEE paper (VSDs: Improving
Analysis...) in mid '90s. This is used to create custom fan curves
(FAN-EIR-FPLR = ) based on the total and static setpoints. The
baseline curve produced will calculate power at varying flow for
constant total and static setpoints. Then assume some reset in static
setpoints at lower flow rates.The evaluation of this curve will
produce comparatively lower power at partial flow rates. The reset of
the setpoint at patial flows is just a SWAG that depends on your
opinion of the sizing of the critical boxes.

This method doesn't use any feedback from the zones, which would be
needed to explicitly model this strategy, but the only way to do that
would be a function and DOE2.2 doesn't have functions, and accuracy
might not increase anyway. Note that in real, as opposed to virtual,
buildings, some engineers have said it is difficult to integrate this
with "warmest" zone SAT reset, and that SAT reset should be scheduled
if zone flow static pressure reset control is enabled. (Trane claims
they can do this however, and have some nice info on their website.)


olivier dosiere wrote:

>   Hi, I don't know how to model in powerdoeSTATIC PRESSURE RESET
> CONTROLusing PIU.(  HVAC system : POWER INDUCTION UNIT, zone
> terminal : parallel PIU ) Do you have an idea? Thanks, Olivier
> Dosiere
> Project engineer
> DMI - 450 lexigton street
> Newton, MA 02466
> 617-527-1525 x 102
>
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--
Fred W. Porter
Senior Engineer
Architectural Energy Corp.
2540 Frontier Ave. Suite 201
Boulder CO 80301
email: fporter at archenergy.com
phone: 303-444-4149
fax: 303-444-4304


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