The Value-Benefit of Retro-commissioning in Existing Buildings
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Transcript The Value-Benefit of Retro-commissioning in Existing Buildings
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VALUE BENEFITS - RETRO-COMMISSIONING EXISTING BUILDINGS
VALUE BENEFITS
RETRO-COMMISSIONING
EXISTING BUILDINGS
TIM CORBETT
Chair, ASHRAE Special Guideline Program Committee 0
The Commissioning Process
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VALUE BENEFITS - RETRO-COMMISSIONING - EXISTING BUILDINGS
•
UNDERSTANDING RETRO-COMMISSIONING (RETRO-Cx)
BEGINS WITH UNDERSTANDING COMMISSIONING (Cx)
• THERE ARE TWO BASIC TYPES OF Cx: TOTAL PROJECT Cx
AND SYSTEMS AND EQUIPMENT Cx
(Definition: Construction Specification Institute)
1. TOTAL PROJECT Cx (BEGINS AT PROJECT
CONCEPTION)
2. SYSTEMS AND EQUIPMENT (START-UP Cx)
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VALUE BENEFITS - RETRO-COMMISSIONING EXISTING BUILDINGS
TOTAL PROJECT (FACILITY) COMMISSIONING (Cx)
• TOTAL PROJECT (FACILITY) COMMISSIONING, ALSO
REFERRED TO AS TOTAL FACILITY COMMISSIONING, BEGINS
DURING PROJECT CONCEPTION AND CONTINUES THROUGH
FACILITY MANAGEMENT AND USE.
• TOTAL PROJECT COMMISSIONING DOCUMENTS THE
OWNER’S FACILITY CRITERIA AND VERIFIES THAT THE
CRITERIA ARE ACHIEVED AND THAT THE FACILITY IS PLACED
INTO PROPER OPERATION.
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VALUE BENEFITS - RETRO-COMMISSIONING EXISTING BUILDINGS
SYSTEM AND EQUIPMENT COMMISSIONING IS:
• A DETAILED OPERATIONAL TESTING, ADJUSTING, AND
TRAINING OF SPECIFIC SYSTEMS OR EQUIPMENT TO
ENSURE THEIR READINESS FOR USE IN THE COMPLETED
FACILITY.
• NOT IMPLEMENTED AT PROJECT CONCEPTION
• A METHOD OF DETERMINING FINAL ACCEPTANCE
• ONLY DOCUMENTS CONDITIONS AT OCCUPANCY
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VALUE BENEFITS - RETRO-COMMISSIONING EXISTING BUILDINGS
•ASHRAE DEFINITION OF THE Cx PROCESS
•A METHOD TO IMPROVE THE DELIVERY OF A PROJECT, FOCUSING
ON QUALITY, THE METHOD INCLUDES MAKING SURE THAT ALL
COMPONENTS OF THE BUILDING ARE PLANNED, INSTALLED, AND
MAINTAINED ACCORDING TO THE OWNER’S REQUIREMENTS.
• THE TOTAL PROJECT COMMISSIONING AND TOTAL BUILDING
COMMISSIONING GO BEYOND NORMAL VERIFICATION OF ALL
FACILITY SYSTEMS FOR PERFORMANCE AND INCLUDE THE ENTIRE
PROJECT OR BUILDING
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VALUE BENEFITS - RETRO-COMMISSIONING EXISTING BUILDINGS
APPLYING RETRO-COMMISSIONING (RETRO-Cx) TO EXISTING
FACILITIES
• NOT A RE-Cx OF CONDITIONS AT FACILITY FINAL ACCEPTANCE
• NOT A FACILITY TUNE-UP OR EVALUATION
• NOT LIMITED TO BUILDING MECHANICAL/ELECTRICAL SYSTEMS
• NOT LIMITED TO OPTIMIZATION OF EXISTING PROCEEDURES OR
SYSTEMS
BUT MORE
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VALUE BENEFITS - RETRO-COMMISSIONING EXISTING BUILDINGS
APPLYING RETRO-Cx TO EXISTING FACILITIES
GATHER AND ORGANIZE ALL EXISTING DOCUMENTATION
(PLANNING)
IDENTIFY CHANGES IN USE AND CURRENT FACILITY
REQUIREMENTS (DISCOVERY OF ROOT CAUSE)
BUDGET AND PUT BEST OPTIONS INTO IMPLEMENTATION PLAN
(PROJECT DELIVERY)
MEET AND ACCEPT ESTABLISHED GOALS FOCUS A METHODS TO
OPTIMIZE VALUE (PERSISTENCE)
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VALUE BENEFITS - RETRO-COMMISSIONING EXISTING BUILDINGS
COMPARING Cx METHODS IN NEW/EXISTING FACILITIES
NEW – OWNER PROJECT
REQUIREMTENTS
EXISTING – CURRENT FACILITY
REQUIREMENTS
1. PRE-DESIGN
1. PLANNING
2. DESIGN
2. INVESTIGATION
3. CONSTRUCTION
3. IMPLEMENTATION
4. POST-OCCUPANCY
4. HAND-OFF
5. PERSISTANCE
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VALUE BENEFITS - RETRO-COMMISSIONING EXISTING BUILDINGS
FACILITY OWNER’S RESPONSIBILITIES:
1. DEVELOP GOALS AND PROJECT OBJECTIVES
2. DEVELOP A SCOPE OF WORK (CURRENT FACILITIES
REQUIREMENTS)
3. HIRE OR ASSIGN THE Cx AUTHORITY
4. SUPPORT THE RETRO-Cx TEAM FINDINGS
5. CLEARLY ARTICULATE THE FACILITY’S INTENDED USE
6. PROVIDE INFORMATION AND FUNDING RESOURCES NEEDED
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VALUE BENEFITS - RETRO-COMMISSIONING EXISTING BUILDINGS
RETRO-Cx AUTHORITY RESPONSIBILITIES
THE RETRO-Cx PLAN
THE RETRO-Cx PLAN IS THE DOCUMENT DEFINING THE PROJECT’S
GOALS, SCOPE, SCHEDULE, DOCUMENTATION REQUIREMENTS,
ROLES. AND TASKS OF THE RETRO-Cx TEAM MEMBERS
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VALUE BENEFITS - RETRO-COMMISSIONING EXISTING BUILDINGS
AT A MINIMUM, THE RETRO-Cx PLAN SHOULD INCLUDE:
• GENERAL BUILDING INFORMATION AND CONTACT INFORMATION
• GOALS AND SCOPE OF THE PROJECT
• BRIEF BUILDING AND SYSTEM DESCRIPTIONS, LISTING SYSTEMS
INVESTIGATED, CONCLUSIONS, AND APPLICATIONS OF FACILITY
OWNER REQUIREMENTS
• LIST OF TEAM MEMBERS, RESPONSIBILITIES, AND DELIVERABLES
• METHODS OF COMMUNICATION, REPORTING, AND PROTOCOLS
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VALUE BENEFITS - RETRO-COMMISSIONING EXISTING BUILDINGS
AT A MINIMUM, THE RETRO- Cx PLAN SHOULD INCLUDE: (CONT)
• SCHEDULE OF PROJECT MILESTONES
• DOCUMENTATION REQUIREMENTS AND RESOURCES
• INVESTIGATION SCOPE, METHODS, AND CORRECTIVE ACTIONS
• IMPLEMENTATION OF SEASONAL VERIFICATION
• PROJECT HAND-OFF ACTIVITIES
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VALUE BENEFITS - RETRO-COMMISSIONING EXISTING BUILDINGS
RETRO-Cx AUTHORITY RESPONSIBILITIES
FINAL REPORT
THE FINAL REPORT IS A SUMMARY OF THE PROJECT AND PROVIDES
A RECORD OF THE RETRO-Cx ACTIVITIES AND RECOMMENDATIONS
FOR MONITORING AND MAINTAINING THE IMPLEMENTED MEASURES.
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VALUE BENEFITS - RETRO-COMMISSIONING EXISTING BUILDINGS
AT A MINIMUM, THE RETRO- Cx FINAL REPORT SHOULD INCLUDE:
• EXECUTIVE SUMMARY
• PROJECT BACKGROUND
• A LISTING, WITH A DESCRIPTION OF FACILITY IMPROVEMENTS
AND OPERATING PROCEDURES IMPLEMENTED
• ESTIMATES OF LIFECYCLE SAVINGS AND THE ACTUAL COSTS
FOR EACH IMPROVEMENT IMPLEMENTED (SIMPLE PAYBACK)
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VALUE BENEFITS - RETRO-COMMISSIONING EXISTING BUILDINGS
THE RETRO- Cx FINAL REPORT SHOULD INCLUDE: (CONT)
• TRENDING AND DIAGNOSTIC/MONITORING PLAN, DOCUMENTING
RESULTS
• ALL TESTING RESULTS
• RECOMMENDED RE-COMMISSIONING PLAN REFERENCING
LIFECYCLE TESTING INFORMATION FROM RETRO- Cx ACTIVITIES
• COMPLETE DOCUMENTATION OF REVISED OR NEW STRATEGIES
IMPLEMENTED
• A LIST OF CAPITAL IMPROVEMENTS RECOMMENDED FOR
FUTURE ACTION
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VALUE BENEFITS - RETRO-COMMISSIONING EXISTING BUILDINGS
AT THE CONCLUSION OF THE RETRO-CX PROGRAM
•THE FACILITY OWNER ADDS VALUE TO THE OPERATION OF
THE FACILITY BY:
• IMPLEMENTION A PROGRAM OF M&V TO CONTINUE TO TRACK
THE BENEFITS OF THE RETRO-Cx PROGRAM
• HAVE IN PLACE A FUTURE RE-COMMISSIONING PLAN FOR
MAINTAINING BENEFITS
• AQUIRE THE TOOLS FOR MAINTAINING AND TRACKING
EFFICIENT FACILITY OPERATION
• REDUCE OPERATING COSTS AND THE FACILITY CARBON
FOOTPRINT
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VALUE BENEFITS - RETRO-COMMISSIONING EXISTING BUILDINGS
QUESTIONS
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VALUE BENEFITS - RETRO-COMMISSIONING EXISTING BUILDINGS
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VALUE BENEFITS - RETRO-COMMISSIONING EXISTING BUILDINGS