Facility Management  Subscribe to RSS - Facility Management


The Pacific Northwest National Laboratory (PNNL) has developed a building Re-tuning approach to detect energy savings opportunities and implement improvements. The purpose of the building Re-tuning course is to enable you to reduce operating cost and provide energy savings to the building you are responsible for. The knowledge and skills learned here are highly valued in the energy, controls, heating, ventilation, and air conditioning (HVAC), green, and sustainability industries and help make our planet healthier.

Multizone to Variable Volume Control Retrofit

Multizone air handling units are older units that are still prevalent in the DoD. This retrofit converts a pre-existing constant volume multizone system to a variable volume (MZ-VV) multizone. The technique makes changes in instrumentation and uses a novel control scheme to reduce energy consumption by reducing simultaneous heating and cooling and excess airflow to satisfied spaces. The retrofit is significantly less expensive and less disruptive than a full system change-out (to VAV) that would require demolition and installation of ductwork and terminal units.