VERMONT TECHNICAL COLLEGE
RENOVATIONS FOR THE DENTAL TRAINING BUILDING
BLAIR PARK CAMPUS, BURLINGTON, VERMONT

Dufresne & Associates provided mechanical engineering design services to Northern Architects for a new heating, ventilation and air conditioning system for a 8,600 square foot renovation of an office building for use as a dental teaching clinic. The design consists of two air handling units coupled with variable air volume (VAV) units. These units vary the amount of air flow to each zone for optimal temperature control of different spaces during different periods of use to match the demand for the building. This reduces the electrical power required during periods of minimal building demand.

In addition to saving electricity by varying the fan speed, the two air handling units also have an energy recovery feature that recovers heat for the exhaust stream during the winter months, reducing the demand for fossil fuel.

Completion of the renovation project is scheduled for September of 2005.

HVAC System Features:

• Exclusive use of premium efficient variable speed motors.
   

• Heat recovery that reduces outside air heating costs by 80%.
   

• Heat recovery that reduces cooling costs by 25% and provides application equipment Energy Efficiency Ration (EER) of 12.7.
   

• Outside air controlled through CO2 sensors allowing building occupants to vary ventilation to building occupancy.