Demand-Controlled Ventilation with VFD
Demand-Controlled Ventilation with Variable Frequency Drive involves a series of upgrades to your HVAC systems, which will reduce the amount of energy being used to cool and ventilate your building. This enhancement is accomplished while continuing to provide you with an optimal comfort level in regard to both airflow and temperature.
Over-Ventilation Wastes Money
A typical HVAC unit simply has the damper fixed in an open position. It constantly ventilates air at levels only truly necessary when your building is at full occupancy. There is no way to control and regulate the ventilation rate, this causes your HVAC unit to waste a lot of energy on conditioning outside air that never needed to enter the duct work to begin with. In an ideal situation your HVAC unit will only ventilate your building in a manner that minimizes non-necessary usage while maintaining optimal comfort and ventilation to meet the current demand.
Demand-Controlled Ventilation Saves Money
Demand-controlled ventilation (DCV) is an add-on to your HVAC system that puts an end to wasteful over-ventilation. DCV components keep the damper open only minimally except when greater ventilation is needed. A carbon dioxide sensor detects high occupancy levels and causes the damper to open to the appropriate degree. A variable frequency drive (VFD) is automatically adjusts the speed at which the supply air fan rotates. The rate is reduced significantly at times when no indoor air is being conditioned, saving you much energy and money. In fact, a VFD can reduce the energy used by your supply fan by as much as 60 to 80 percent.
The Benefits of DCV with VFD
Some of the most notable benefits that accrue to a business owner when they upgrade to a DCV with VFD system are:
- More efficient ventilation that operates on an as-needed basis.
- Lower energy bills.
- More reliable HVAC operation.
- Better-quality indoor air.
- Access to incentive programs with participating local contractors.