Rendering courtesy of Bohlin Cywinski Jackson Architects Integrating Energy Conservation and Occupant Safety John Duffy, PE Principal Affiliated Engineers Bryan Schanely, PE Project Engineer Duke University I2SL Conference 2019 Session E1 Tuesday, October 22, 1019 Courtesy of BCJ
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Integrating Energy Conservation and Occupant Safety I2SL ...
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Rendering courtesy of Bohlin Cywinski Jackson Architects
Integrating Energy Conservation and Occupant SafetyJohn Duffy, PE Principal
Affiliated Engineers
Bryan Schanely, PE Project Engineer
Duke University
I2SL Conference 2019
Session E1
Tuesday, October 22, 1019
Courtesy of BCJ
Learning Objectives
• Understand the value of wind wake studies.
• Identify strategies for reducing ventilation rates and responding to adverse air quality events.
• Identify opportunities to extend redundancy to electrical systems.
• Understand how to integrate high performance buildings and occupant safety.
2
Duke University Pratt Engineering Building
• 3 Research Neighborhoods• Health Innovation
• Computing & Intelligent Systems
• Environmental Health
• Campus Utilities• 40ºF / 60ºF Chilled Water
• 120 PSIG Steam
• 12.47 KV Normal Power
• 12.47 KV Emergency Power
3Courtesy of BCJ
Courtesy of BCJ
Building Organization
4
Building Organization
5
Building Organization
6
Maintenance Safety Design Elements
• N+1 Redundancy• Fan Wall AHUs
• Exhaust Fans
• Heat Exchangers
• Steam• Dedicated Service Entrance Room
• 2 Exits
• Second PRV Room
• Electric Autoclaves
• Heat Recovery Bypass
• Push Button Hand Stops at AHUs
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Decoupled HVAC System
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Decoupled HVAC System
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Energy Recovery
10
• Exhaust Air• Preheat
• Precool
• Combined Pre & Reheat• Lower DP
• Wrap Around Heat Pipe• Refrigerant Phase Change
• Heat Recovery Redundancy• Pumps
• Heat Exchangers
Electrical Distribution Redundancy
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Health & Safety Design Elements
• Redundant (A & B) Primary Service• 2 Indoor Transformers• Main-Tie-Main Service Entrance Switchgear
• 12.47 KV Campus Central Generator• 2 Plants• 6.5 MW, 9.75 MW, 13 MW• Looped Distribution
• Redundant Distribution• Dual 4 Pole Breakers• A & B Electrical Risers• Split M & P Power
• Electrical Maintenance• No Work on Energized Primary Equipment• Managed Shutdowns at Individual Panels 12