The efficacy of the various demand controlled ventilation
To mitigate the increased reheat at zones when unoccupied, the use of demand controlled ventilation
in critical areas should be explored.
The measures in the package include: robust optimum start, resistance heat lockout, ventilation lockout during morning warm-up, outside air damper seals, outside air economizer, demand controlled ventilation
and either fan speed reduction or cycling off during dead-band operation.
Demand Controlled Ventilation
Technology and Application National Institute of Standards and Technology (NISTIR 6729).
Items like optimum start thermostats, economizer controls, and demand controlled ventilation
can be independently prescribed, but a package of measures provides the synergy of addressing common problems together and building installer expertise and efficiency.
According to the International Energy Agency, demand controlled ventilation
should only be used if there is unpredictable occupant demand and all other sources of contaminants are known.