Commissioning for Sustained Building Performance Building Performance Heifer Village Little Rock, AR 09/17/10 Retrocommissioning | RCx (Existing Building

Comm

issioning for Sustained Building Perform

ance

Heifer Village Little Rock, AR

09/17/10

Retrocommissioning | RCx(Existing Building Commissioning | EBCx)

University of IllinoisChampaign, IL

Damon McFall, PE, LEED APwww.fs.illinois.edu/retro

http://www.fs.illinois.edu/retro

Commissioning for Sustained Building Performance

2

State Budget Gaps as of 7/15/10

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http://www.cbpp.org/cms/?fa=view&id=711


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State Troubles = Public University Troubles


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Current Financial Woes @ Universities

10%

How Are Public Institutions to React?

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16%


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32%


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• “I have never seen such a difficult time for colleges and universities in my 40 years as an educator.” - SIU Pres. Mr. Glenn Poshard http://www.universitybusiness.com/newssummary.aspx?news_date=2009-09-25&news_id=20490


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Institutional Commitments to Fulfill

“…achieving energy independence for the U.S. as quickly as possible.”http://www2.presidentsclimatecommitment.org/html/commitment.pdf

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http://www.presidentsclimatecommitment.org/


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Reduce Energy UseChilled Water and Steam Meter Projects

Steam Trap ReplacementsLEED NC Silver Rating (NEW & REMODELS)

Lighting RetrofitsEnergy RetrofitsThermal Storage

Energy Service Companies (ESCO)

Retrocommissioning (RCx)Existing Building Commissioning (EBCx)


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Retrocommissioning @ Illinois

H V A C


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Retrocommissioning @ Illinois

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“40% to 60%” - U.S. D.O.E.

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Effective Institutional RCx Teams

• Optimal Solution– HVAC & Controls Expertise as Leaders– Experienced Control Programmers

Helmink McFall O’Brien NiebuhrMessman


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Effective Institutional RCx Teams

• Optimal Solution– HVAC & Controls Expertise as Leaders– Experienced Control Programmers– Dedicated & Skilled Composite Crews

Helmink McFall


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Funding in a Deficit Environment

• Students

• Energy Cost Avoidance

• State of Illinois Grants

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http://developers.face.com/examples/tagger-widget/


15

Creating Synergy: Essential

• Encouraging Positive Working Relationships– Friendly staff – Weekly meetings – Immediate response

• Develop Team Environment– Team Responsibility– Team Decisions– Team Benefits


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Succeeding One Building at a Time

“A great team to work with…” – Elizabeth Dennison, Coordinated Sciences Lab

“An excellent team to work with…” – Janet Kane, Physics

“One of the few areas of good news…” – Terry Ruprecht, Director of Energy

Campus Energy Use Index reduced 17.3% in part due to Retrocommissioning Efforts


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RCx @ Illinois: History 101

3 years18 people

27 buildings$2,600,000 spent$3,100,000 saved

378,821,000,000 BTUs avoided


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The Journey

Krannert Center for the Performing ArtsACES Library and Alumni CenterAnimal Sciences LaboratorySiebel Center for Computer Science


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Shared Commonalities

19 of

Chilled Water Electrical Steam


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Krannert Center for the Performing Arts

196720 of


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Pneumatic Controls


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24/7$1,200,000


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Strategy: Occupancy Schedules

50%

100%

OFF

5 pm11 pm

7 am


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Strategy: Control System Upgrades


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35% $300,000

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$190,000


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ACES Library & Alumni Center


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14,000 CFM


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24/7$475,000


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ACES Library & Alumni Center• Strategy: Occupancy Schedules

– (3) Distinct Calendar Periods• Spring / Fall Semesters: 8am to 11pm• Summer Semester: 8am to 9pm• Summer, Winter, Spring, Thanks Breaks: 8am to 5pm

– What Happens?• Exhaust Fans Stop• OA Dampers Close• Static Pressure Reduced 100%

100%100%


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ACES Library & Alumni CenterStrategy: Control System Analysis

– Pneumatic Review– Confidence in thermostats– Faulty Humidity Sensor– Reheat System Schedule– Reduced the minimum VAV CFM


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42% $110,000

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$70,000


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Animal Science Laboratory


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Animal Science Laboratory


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Animal Sciences Laboratory

24/7$571,000


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Animal Sciences LaboratoryStrategy: Occupancy Schedules Where PossibleStrategy: Review Lab Exhaust System


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Animal Sciences Laboratory

25% $60,000

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$102,000


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Siebel Center for Computer Science


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• Reheat Coil Issues• Control Sequences

– Occupancy Sensor– “Night Setback” / Unoccupied– Lack of dead band



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24/7$1,300,000


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• Connected occupancy sensors to HVAC• Modified DDC programming

• Night Setback Sequence• Increased dead band ranges on thermostats

• Recommended system cleanup• Recommended 100+ HW reheat valves



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Re-balanced entire building• Minimum VAV CFMs• Maximum VAV CFMs


Lecture Hall Zone• VFDs• CO2 Monitoring• Scheduling


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42% $290,000

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$277,000


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• Install required DDC Controls• Implement Occupancy Schedules• Reduce / Eliminate EA & OA• CO2 and RH feedback• Improve Sequences of Operation• Continuous commissioning by

temperature control graphics• Support & Encourage Occupant &

Mechanic Behavioral Change

Strategies Frequently Used

Comm

issioning for Sustained Building Perform

ance

Heifer Village Little Rock, AR

09/17/10

Thank you!

University of IllinoisChampaign, IL

Damon McFall, PE, LEED [email protected]

www.fs.illinois.edu/retro

© Damon McFall, PE, LEED AP – August 2010Copy or distribution of this presentation is strictly permitted without direct written consent.

http://www.fs.illinois.edu/retro

Documents

Commissioning for Sustained Building Performance Building Performance Heifer Village Little Rock, AR 09/17/10 Retrocommissioning | RCx (Existing Building