Phoenix Convention Center • Phoenix, Arizona Existing Building Commissioning (EBCx): A Strategy for Improving Your Building Performance Track: Building Performance Session: O&M Strategies for Improved Building Performance Liz Fischer Building Commissioning Association August 13, 2015
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Phoenix Convention Center Phoenix, Arizona Existing Building Commissioning (EBCx): A Strategy for Improving Your Building Performance Track: Building Performance.
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Phoenix Convention Center • Phoenix, Arizona
Existing Building Commissioning (EBCx): A Strategy for Improving Your Building Performance
Track: Building Performance
Session: O&M Strategies for Improved Building Performance
Liz FischerBuilding Commissioning Association
August 13, 2015
Energy Exchange: Federal Sustainability for the Next Decade2
The All-Encompassing Definition of EBCx
• Existing Building Commissioning• Retro-Commissioning• Re-Commissioning• Ongoing Commissioning• Monitoring-Based Commissioning
Energy Exchange: Federal Sustainability for the Next Decade3
EBCx Process for Improved Performance
Investigation Phase
Implementation Phase
Hand-Off
Planning Phase
Ongoing Cx
Development of Existing Building Commissioning goals, facility requirements, and a commissioning plan.
Field inspections, data gathering, testing and analysis to accurately assess system performance and identify improvement opportunities.
Desired facility improvements are completed and the results and performance are verified.
Systematic transition from a commissioning activity and the commissioning team to standard operating practice and the operations and maintenance team.
Implementation of systems and tools to support persistence benefits and continuous performance improvement over time.
Source: Building Commissioning Association – Existing Building Commissioning Best Practices
Energy Exchange: Federal Sustainability for the Next Decade4
The All-Encompassing Definition of EBCx
What it is not:• Auditing• Energy Auditing• Any Level of ASHRAE Auditing• Building Assessments• Building Tune-ups
Energy Exchange: Federal Sustainability for the Next Decade5
EBCx AuditWalkthrough X XDocument Review (As built, Tenant Interviews, TAB reports, CFR, Submittals, Previous System Manuals, review O&M work request, Energy Audits/Facility Assessment documents, etc. )
X
Utility Bill Analysis X X*O&M Practices: Interviews & Reviews X X*Facility Improvement Measurements (FIM) Identified
X X*
Identifying Capital Improvement Opportunities XSystem Sequence Testing XSystem Functional Testing XData & Trend Logging & Analysis X
EBCx vs. Audit
* ASHRAE Level II or Higher
Energy Exchange: Federal Sustainability for the Next Decade6
MUST HAVE: Functioning Building Automation System (BAS)
Higher Than Expected Energy Use
Mechanical Cooling
Complex HVAC Systems
Owner Support with Funding Available
Is Your Building a Candidate for EBCx?
NICE TO HAVE: Existing Metering a Plus
Available Documentation
Known Problems
Relationships with Established Contractors
Knowledgeable, Motivated and Available Building Staff
Energy Exchange: Federal Sustainability for the Next Decade7
Sample Goals Developed by the Owner
How EBCx Improves Operations
• Resolve O&M Issues• Improve IAQ• Identify Staff Training Needs