2.4 Introduction to Demand-Controlled Ventilation (DCV)

This is course 2.4 of the Common Advanced Control Strategies module.

Demand-Controlled Ventilation (DCV) uses the building automation system (BAS) to adjust outdoor airflow to match building occupancy and saves energy. It is required by the International Energy Conservation Code (IECC) and ASHRAE 90.1 for spaces over 500 square feet with occupant density of 10 people per 1,000 square feet. In this session, we will introduce occupancy-based DCV and CO2-based DCV concepts, and describe DCV components, controls setup, and control sequences recommended in ASHRAE Guideline 36 High-Performance Sequences of Operation for HVAC Systems for single-zone systems. Multi-zone system DCV and DCV common issues will also be briefly discussed in this course.

Speakers

Xiaohui “Joe” Zhou, PhD, PE, CEM, Principal Engineer, Slipstream

Kevin Frost, PE, Energy Engineer, Slipstream

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