Air-Handling Systems, Energy, and IAQ - Trane
Air-Handling Systems, Energy, and IAQ - Trane
Air-Handling Systems, Energy, and IAQ - Trane
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ventilation optimization<br />
System Level: Ventilation Reset<br />
49<br />
© 2009 <strong>Trane</strong><br />
SA RA<br />
OA<br />
air-h<strong>and</strong>ling unit with<br />
flow-measuring OA damper<br />
• Reset outdoor airflow<br />
CO2 TOD OCC TOD OCC<br />
communicating BAS<br />
•New OA setpoint<br />
…per ASHRAE 62<br />
ventilation optimization<br />
Benefits<br />
50<br />
© 2009 <strong>Trane</strong><br />
CO 2<br />
DDC VAV controllers<br />
• Required ventilation (TOD, OCC, CO2 )<br />
• Actual primary airflow (flow ring)<br />
� Saves energy during partial occupancy<br />
� Lower installed cost, less maintenance, <strong>and</strong> more<br />
reliable than installing a CO 2 sensor in every zone<br />
• Use zone-level DCV approaches where they best fit<br />
(CO 2 sensor, occupancy sensor, time-of-day schedule)<br />
• Combine with ventilation reset at the system level<br />
� Earn LEED EQc1: Outdoor <strong>Air</strong> Delivery Monitoring<br />
© <strong>Trane</strong>, a business of Ingersoll R<strong>and</strong> 27
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