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SEASONAL COMMISSIONING

SEASONAL COMMISSIONING. Presented By: Andrew Thompson, P.E., HBDP, CxA , CEM, LEED-AP Principal Ryan Tushner, P.E., CxA , LEED-AP BD+C Senior Cx Agent. High Performance Building Design Consultants. SERVICES: High-Performance Engineering Commissioning & Energy Consulting

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SEASONAL COMMISSIONING

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  1. SEASONAL COMMISSIONING Presented By: Andrew Thompson, P.E., HBDP, CxA, CEM, LEED-AP Principal Ryan Tushner, P.E., CxA, LEED-AP BD+C Senior Cx Agent

  2. High Performance Building Design Consultants • SERVICES: • High-Performance Engineering • Commissioning & Energy Consulting • Green Building Consulting • Building Simulation & Analysis • Human Inquiry • Design Build • QUALIFICATIONS: • 60 Staff Members and 6 Offices • 21 Professional Engineers • 14 Commissioning Professionals • 3 High-Performance Building Design Professionals

  3. HEALTHCARE PROJECTS • 85+ Healthcare Projects • 40+ Healthcare Commissioning Projects • 15 LEED Certified/Pursuing Recent Healthcare Experience • LOCAL NEBRASKA PROJECTS • Ehrling Bergquist Hospital, Offutt AFB, Bellevue, NELEED Silver Certified • Bergan Mercy Medical Center, Omaha, NE • Pender Community Hospital, Pender, NE • NATIONAL PROJECTS • Colorado Springs Outpatient Clinic, Colorado Springs, CO • San Antonio Military Medical Center, San Antonio, TX • Eglin AFB Hospital Realignment, Eglin AFB, FLPursuing LEED Certification CURRENT/RECENT PROJECTS

  4. What’s your flavor? • New Building Cx • Verify that everything works the way it was intended • Re-Cx • Re-align building systems with current use • Systematically check system performance • Retro-Cx • Actively reduce energy use through system tuning • Implement Facility Improvement Measures • Seasonal Cx • Combination of many flavors but in small scoops

  5. What are your pressure points? Let’s Rank them: • Operating Costs • System Reliability • Patient Satisfaction • Code Requirements / Certifications • Other

  6. The value of seasonal Cx? • Energy Savings • Comfort • Reliability • Relieves pressure points • Small adjustments with big impacts

  7. What is Seasonal Cx? • Simple Cx activities with big impacts • Adjust for use changes • Control point check • Optimizing systems • System reliability checks • Functional performance test a system

  8. Adjust for Use Changes • Don’t hit the reset button • Review department moves over the past year • Update occupancy schedule • Review exhaust requirements • Review ventilation air requirements • Review pressure relationship requirements • Example: • Medical offices move into therapy gym • 1000 CFM exhaust runs year round • This equates to 5 Dallas Stadiums

  9. Control Point Check • Impact of a bad sensor or incorrect control point can be huge • Incorporate sensor checks into daily activities with the use of trending

  10. Optimizing Systems • Air Terminal Boxes • Minimum flow settings • Occupied / Unoccupied Schedules • Temperature Deadband Figure 1 Figure 2 • 180,000 SF Hospital resulted in $100,000 energy savings / yr * ASHRAE Journal May 2010

  11. Optimizing Systems • Outside Air • Flow quantity verification • Control sequences (verify damper operation) • Economizer

  12. System Reliability Checks • High and Low limit pressure safeties • Simple process • Mag Pressure Gauge • Air pressure

  13. System Reliability Checks • Freeze-stat checks • Mitigate significant risk • Simple process • Ice bucket with a wet rag • Control System UPS • Is there a UPS? • Is the UPS functional?

  14. Functional Performance Test • Pick a system of concern to focus on that year • Seasonal choices may be hot or chilled water systems • Example of Air Handling Unit FPT (link to FPT)

  15. Cost • Look at what can be accomplished in-house first (? /SF) • Contracted Seasonal Cx = $0.15 - $0.60 / SF • Contracted Re-Cx = $0.30 - $0.90 / SF

  16. Questions

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