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Kapileshwari and Robison- Gulf Coast Green 2010

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Big Dreams, Tight Budgets: UH Retro-Commissioning to Reduce Carbon Footprint

Authors: Sameer Kapileshwari, University of Houston Facilities and Cole Robison, Controls Unlimited

Published in: Design
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Kapileshwari and Robison- Gulf Coast Green 2010

  1. 1. Big Dreams Tight Budgets: UH retro-commissioning to reduce Carbon footprint Presented at Gulf Coast Green - 2010 April 15, 2010 University of Houston Houston, TX
  2. 2. Big Dreams Tight Budgets: UH retro-commissioning to reduce Carbon footprint <ul><li>Agenda </li></ul><ul><li>Retro-commissioning Implementation, Cost, Operational Savings </li></ul><ul><li>Retro-commissioning and Improved Occupant Comfort </li></ul><ul><li>Project Planning and Coordination </li></ul><ul><li>Measurement and Verification </li></ul>
  3. 3. Commissioning (CX)
  4. 4. CX and RCX <ul><li>Commercial buildings >25,000 sq ft pay $50 billion/yr for energy </li></ul><ul><li>Cx energy savings range: 6% - 9% </li></ul><ul><li>– California Market Characterization Study (2000) </li></ul><ul><li>RCx energy savings range: 7% - 30% </li></ul><ul><li>– LBNL study: The Cost-Effectiveness of Commissioning New and Existing Commercial Buildings: Lessons from 224 Buildings (2005) </li></ul><ul><li>Most projects see a 5 - 25% reduction in utility cost as the result of low-cost RCx efforts </li></ul><ul><li>– Retrocommissioning’s Greatest Hits; www.peci.org </li></ul>
  5. 5. Retro-Commissioning (RCX) <ul><li>Systematic investigation process for improving or optimizing a building’s operation and maintenance </li></ul><ul><li> Reducing energy waste, obtaining energy cost savings, and identifying and fixing existing problems </li></ul>
  6. 6. Retro-Commissioning (RCX) <ul><li>Primary objectives for retro-commissioning a project: </li></ul><ul><li>Bring equipment to its proper operational state </li></ul><ul><li>Reduce complaints </li></ul><ul><li>Reduce energy and demand costs </li></ul><ul><li>Increase equipment life </li></ul><ul><li>Improve indoor air quality </li></ul><ul><li>Increase tenant satisfaction </li></ul><ul><li>Improve facility operation and maintenance </li></ul><ul><li>Reduce staff time spent on emergency calls </li></ul>
  7. 7. UH RCX Projects <ul><li>Program Manager - CenterPoint Energy </li></ul><ul><li>Program Administrator – Nexant </li></ul><ul><li>Engineer/Technical Audit – ACR Engineering </li></ul><ul><li>Installing Contractor – Controls Unlimited </li></ul><ul><li>Host/Owner – University of Houston </li></ul>
  8. 8. Buildings Implemented on Campus
  9. 9. UH RCX Project - 2009 <ul><li>Buildings Selected </li></ul><ul><li>Isabel Cameron </li></ul><ul><li>Technology-1 </li></ul><ul><li>Engineering </li></ul><ul><li>Communications </li></ul><ul><li>Wortham Theater </li></ul>
  10. 10. UH RCX Project - 2009 <ul><li>Change Preheat Setpoint for Cameron OAHU 1 </li></ul><ul><li>Communications OAHU Schedule </li></ul><ul><li>Wortham OAHU Schedule </li></ul><ul><li>Communications Exterior Lights </li></ul>
  11. 11. UH RCX Project - 2009 <ul><li>Engineering Lighting </li></ul><ul><li>Add ceiling fans to Wortham theater </li></ul><ul><li>Reduce Engineering OA </li></ul>
  12. 12. UH RCX Project - 2009 <ul><li>DCV for Cameron </li></ul><ul><li>Reset VFDs to automatic </li></ul><ul><li>Technology DDC </li></ul><ul><li>Cameron DDC </li></ul>
  13. 13. UH RCX Project - 2009
  14. 14. Retro-Commissioning (RCX) <ul><ul><li>Participated in CenterPoint’s Standard Offer Program (CISOP) and Pilot RCX program (with 3 buildings) Total Gross area = 285,000 sf </li></ul></ul><ul><ul><li>Established in-house RCX program (Total gross area audited = 990,000 sf) </li></ul></ul><ul><ul><li>Reinvested $575,000 energy grant received through CI SOP to implement measures identified in RCX programs </li></ul></ul><ul><ul><li>Participated in CenterPoint RCX program with 8 more buildings Total gross area = 810,000 sf </li></ul></ul><ul><ul><li>Future participation with auxiliary buildings </li></ul></ul>
  15. 15. Energy Efficiency & Sustainability Milestones
  16. 16. Sustainability Task Force <ul><li>FY 2009 </li></ul><ul><ul><li>Continue Energy conservation/retro-commissioning efforts </li></ul></ul><ul><ul><li>University’s Carbon Footprint calculation </li></ul></ul><ul><ul><li>Scored 84/99 points in Princeton Review Sustainability study and grade B in 2010 College sustainability report card </li></ul></ul>
  17. 17. Project Coordination Planning <ul><li>Project Scope </li></ul><ul><li>Project Components </li></ul><ul><li>Pre-Implementation planning </li></ul><ul><li>Implementation </li></ul><ul><li>Commissioning Process </li></ul><ul><li>Evaluation Period / Trending </li></ul><ul><ul><li>Building Operation Observations </li></ul></ul><ul><ul><li>Power </li></ul></ul><ul><ul><li>Adjustments </li></ul></ul>
  18. 18. Project Coordination Planning <ul><li>Pre-Implementation planning </li></ul><ul><ul><li>Building usage and scheduling </li></ul></ul><ul><ul><li>Long Term Considerations </li></ul></ul><ul><ul><ul><li>Controls Network Plan </li></ul></ul></ul><ul><ul><ul><li>Network Structure </li></ul></ul></ul><ul><ul><ul><li>Device ID Number Scheme </li></ul></ul></ul>
  19. 19. Measurement and Verification <ul><li>Commissioning Process </li></ul><ul><ul><li>Process Development </li></ul></ul><ul><ul><li>Commissioning </li></ul></ul><ul><ul><ul><li>Every Point </li></ul></ul></ul><ul><ul><ul><ul><li>System Value </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Field Value </li></ul></ul></ul></ul><ul><ul><ul><li>Program Operation </li></ul></ul></ul><ul><ul><ul><ul><li>PID Loop Tuning </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Program Evaluation </li></ul></ul></ul></ul><ul><ul><li>Repair </li></ul></ul><ul><ul><li>Redevelopment </li></ul></ul><ul><ul><li>Seasonal Change Evaluation </li></ul></ul><ul><ul><ul><li>Program Adjustment </li></ul></ul></ul><ul><ul><ul><li>Occupant Comfort – Hot/Cold Calls </li></ul></ul></ul><ul><ul><ul><li>PID Loop Tuning </li></ul></ul></ul>
  20. 20. Measurement and Verification <ul><li>Evaluation Period / Trending </li></ul><ul><ul><li>Temperatures </li></ul></ul><ul><ul><li>Plant Chilled Water </li></ul></ul><ul><ul><li>Power </li></ul></ul><ul><ul><ul><li>Utility Metering </li></ul></ul></ul><ul><ul><ul><li>Building Operation Observations </li></ul></ul></ul><ul><ul><li>Data Samples and Adjustments </li></ul></ul>
  21. 21. Evaluation Period / Temperature
  22. 22. Measurement and Verification <ul><li>Evaluation Period / Trending </li></ul><ul><ul><li>Temperatures </li></ul></ul><ul><ul><li>Plant Chilled Water </li></ul></ul><ul><ul><li>Power </li></ul></ul><ul><ul><ul><li>Utility Metering </li></ul></ul></ul><ul><ul><ul><li>Building Operation Observations </li></ul></ul></ul><ul><ul><li>Data Samples and Adjustments </li></ul></ul>
  23. 23. Evaluation Period / Chilled Water
  24. 24. Measurement and Verification <ul><li>Evaluation Period / Trending </li></ul><ul><ul><li>Temperatures </li></ul></ul><ul><ul><li>Plant Chilled Water </li></ul></ul><ul><ul><li>Power </li></ul></ul><ul><ul><ul><li>Utility Metering </li></ul></ul></ul><ul><ul><ul><li>Building Operation Observations </li></ul></ul></ul><ul><ul><li>Data Samples and Adjustments </li></ul></ul>
  25. 25. Evaluation Period / Electrical
  26. 26. Evaluation Period / Trending Review
  27. 27. Trended Energy Data Sample
  28. 28. <ul><li>Hilton Hotel at The University of Houston </li></ul><ul><li>Change Dual Ducts to VAV </li></ul><ul><ul><li>Retrofit Controls </li></ul></ul><ul><ul><li>Install VFD’s </li></ul></ul><ul><ul><li>Install Dampers in Hot Ducts </li></ul></ul><ul><li>Retrofit Hotel Air Handlers Serving Public Spaces </li></ul><ul><ul><li>Demand Ventilation </li></ul></ul><ul><li>Install VFD’s on Hotel Air Handlers </li></ul><ul><li>Retrofit 53 Dual Duct Mixing Boxes for Assembly Areas </li></ul><ul><ul><li>Temperature Sensors </li></ul></ul><ul><ul><li>CO2 </li></ul></ul><ul><ul><li>Occupancy </li></ul></ul>The Impact – Auxiliary Campus Buildings Find Advantages
  29. 29. Big Dreams Tight Budgets: UH retro-commissioning to reduce Carbon footprint <ul><li>Sameer A. Kapileshwari, PE, LEED AP </li></ul><ul><ul><li>University of Houston </li></ul></ul><ul><ul><li>Director of Utilities, Energy, and Technical Services </li></ul></ul><ul><ul><li>4211 Elgin </li></ul></ul><ul><ul><li>Houston, TX 77204 </li></ul></ul><ul><ul><li>Phone: (713) 743-5797 </li></ul></ul><ul><ul><li>Email: [email_address] </li></ul></ul><ul><ul><li>Web: http://www.uh.edu/plantops </li></ul></ul><ul><li>Cole Robison, MBA, LEED AP </li></ul><ul><ul><li>Controls Unlimited, LLC </li></ul></ul><ul><ul><li>Director of Operations </li></ul></ul><ul><ul><li>26014 Aldine Westfield, Suite 101C </li></ul></ul><ul><ul><li>Houston, Texas 77373 </li></ul></ul><ul><ul><li>Phone: (713) 554-0560 </li></ul></ul><ul><ul><li>Email: [email_address] </li></ul></ul><ul><ul><li>Web: www.controls-unlimited.com </li></ul></ul>

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