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Similar to Labs21 CDCV 9.8.2010
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Labs21 CDCV 9.8.2010
- 1. UC Irvine Centralized Demand Controlled Ventilation The Commissioning, Lab Safety, and Energy Savings Tool
- 3. Laboratory Ventilation Performance: Comparing Centralized Demand Control and Zone-Occupancy Control Systems Implementation and Testing Problems Abound Centralized Demand Controlled Ventilation: The Commissioning, Lab Safety, and Energy Savings Tool The intention of our testing was to determine whether occupancy based controls could be as effective at saving energy as a full CDCV system. Changes to the HVAC system resulted in unintended excessive air flows that were difficult to troubleshoot but yielded a wealth of information, energy savings, and the conclusion to our original question.
- 13. Laboratory Ventilation Performance: Comparing Centralized Demand Control and Zone-Occupancy Control Systems Implementation and Testing Problems Abound Centralized Demand Controlled Ventilation: The Commissioning, Lab Safety, and Energy Savings Tool The intention of our testing was to determine whether occupancy based controls could be as effective at saving energy as a full CDCV system. Changes to the HVAC system resulted in unintended excessive air flows that were difficult to troubleshoot but yielded a wealth of information, energy savings, and the conclusion to our original question.
- 15. Diagnosis is not always simple
- 18. Control Diagram
- 20. Room 2213 is an example that can be repeated for all but 2 labs. There are multiple zones overlapping and fighting each other. This issue has been occurring since the building was built. Air delivery rates in 2213 are far from balanced. The zones are totally independent. Simultaneous heating and cooling
- 21. The re-zoned lab Eliminated the thermostats fighting each other. Created a balanced air delivery throughout the lab.
- 22. Before After
- 23. Before After
- 26. What does energy savings look like? Using the CDCV system we can see room, time, and CFM savings. UC Irvine not only uses the system as an MBCx tool but we validate our savings as well
- 27. QUESTIONS ?
Editor's Notes
- This CDCV system begins with: room sensors to measure the quality of the air in many locations of a building An air router pulls the air sample to the Sensor suite that analyzes the air sample for… An information management server tells the VAV controller to increase or decrease air flow All this data is logged into a computer for analysis