Northern State Correctional Facility Mechanical System Upgrades

Newport, Vermont

Design of energy efficiency measures to lower operating costs in six of the facility’s eight buildings totaling 156,000 sf. Renovated five variable air volume (VAV) heating/cooling systems including premium efficiency motors and variable speed drives. Secondary heating hot water loops were converted to variable flow with premium efficiency pump motors and variable speed drives. Control upgrades included a dual temperature comparison sequence to control the economizer mode for 23 air handling units, so that zones are not overcooled and require additional reheat capacity. Added control capacity to introduce demand control ventilation sequences for three air handling units. Variable air flow capacity was provided for the largest air handling unit.