Savings from Demand Control ventilation in eQuest

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John,

78% savings in fan energy and 64% in heating seems high to me. Sounds like your base building is cranking ventilation air pretty hard.

Vikram Sami, LEED AP

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A Minimum air schedule on the Baseline system will ensure no OA is being
supplied in the night when the fans should only be recirculating.

MIN-AIR-SCH
Takes the U-name of a SCHEDULE that contains hourly values of the ratio of
minimum outside air flow to supply air flow. Values in the MIN-AIR-SCH vary
from 0.0 (no outside air flow; economizer inactive if specified) to 1.0
(100% outside air flow). A value of 0.001 actives the economizer. A value
of -999 returns the hourly value to MIN-OUTSIDE-AIR or to the program's
calculated minimum outside air value (found on report SV-A for the SYSTEM
or for each zone for zonal systems). During a warmup period, this schedule
is normally set to zero and can then be set to -999 during other hours to
allow the specified or calculated ventilation minimum damper position to be
used. Note that schedules are ignored in the design routines; therefore,
the minimum ventilation air desired for design must be specified either at
the zone or system level.

Madhav Munshi

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Thank you, Sir !!

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