4.4 Multizone to Variable Volume Control Retrofit

This is course 4.4 of the ESTCP Demonstration Projects module.

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. Typical multizone configurations and implementing the retrofit will be discussed. Resources that are available for technical transfer of the retrofit will be shown as well.

Speaker: Christopher Battisti, PE, Mechanical Engineering Researcher, USACE ERDC-CERL

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