DEMAND CONTROL VENTILATION WITH CENTRALIZED AIR QUALITY SENSORS

Category: 
Gov't / Institutional Facilities
Project Number: 
ET11SDGE0016
Start Year: 
2011
End Year: 
2013
Markets Segments: 
Commercial
Educational Facilities
Government - Institutional Facilities
High Technology
Project Type: 
Demand Savings
Demonstration
Electric Energy Savings
Product Evaluation
Type of Technology: 
Building Controls
Energy Conservation
HVAC, Commercial
Organization: 
San Diego Gas and Electric (SDG&E - a Sempra utility)
Project Status: 
Completed
Savings Type: 
Industry

In many cases, buildings lack automatic ventilation feedback and are consequently over-ventilated. This report investigates the potential energy savings for a demand control ventilation (DCV) system with centralized air quality sensors. This technology aims to maintain or improve building comfort, verify with continuous measurements that ventilation codes are satisfied, improve environmental air quality, and reduce overall energy consumption. To accomplish such a strategy the technology generally gathers the following data:
- Space Temperature
- Dew Point Temperature
- Carbon Dioxide (CO₂)
- Carbon Monoxide (CO)
- Total Volatile Organic Compounds (TVOC)
- Airborne Particulates

The main focus of this project was to document the energy savings at one particular college laboratory facility where this system was installed. The calculation strategy included a pre- and post-retrofit weather bin analysis of supply fans, exhaust fans, chilled water usage, and heating hot water usage.

PDF Report: 
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