genuine | progressive | advocates seasonal commissioning presented by: andrew thompson, p.e., hbdp,...
TRANSCRIPT
GENUINE | PROGRESSIVE | ADVOCATES
SEASONAL COMMISSIONING
Presented By: Andrew Thompson, P.E., HBDP, CxA, CEM, LEED-APPrincipal
Ryan Tushner, P.E., CxA, LEED-AP BD+CSenior Cx Agent
High Performance Building Design ConsultantsSERVICES:• 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
LOCAL NEBRASKA PROJECTS• Ehrling Bergquist Hospital, Offutt AFB, Bellevue, NE LEED Silver Certified• Bergan Mercy Medical Center, Omaha, NE• Pender Community Hospital, Pender, NE
CURRENT/RECENT PROJECTS
NATIONAL PROJECTS• Colorado Springs Outpatient Clinic, Colorado Springs, CO• San Antonio Military Medical Center, San Antonio, TX• Eglin AFB Hospital Realignment, Eglin AFB, FL Pursuing LEED Certification
HEALTHCARE PROJECTS• 85+ Healthcare Projects• 40+ Healthcare Commissioning Projects• 15 LEED Certified/Pursuing
Recent Healthcare Experience
• 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
What’s your flavor?
Let’s Rank them:
Operating Costs System Reliability Patient Satisfaction Code
Requirements / Certifications
Other
What are your pressure points?
Energy Savings Comfort Reliability Relieves pressure points Small adjustments with big impacts
The value of seasonal Cx?
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
• 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
Adjust for Use Changes
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
Optimizing Systems
• Air Terminal Boxes– Minimum flow settings– Occupied / Unoccupied Schedules– Temperature Deadband
Figure 1 Figure 2
* ASHRAE Journal May 2010
• 180,000 SF Hospital resulted in $100,000 energy savings / yr
Optimizing Systems
• Outside Air– Flow quantity verification– Control sequences (verify damper operation)– Economizer
• High and Low limit pressure safeties– Simple process– Mag Pressure Gauge – Air pressure
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?
System Reliability Checks
• 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)
Functional Performance Test
• 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
Cost