Cshema 2009 Master Energy

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Cshema 2009 Master Energy

  1. 1. Energy Efficiency on Campus Balancing Safety & Energy Savings A Summary of Initiatives Marc Gomez, Dick Sun, Joe Rizkallah magomez@uci.edu, dtsun@uci.edu, jar@uci.edu
  2. 2. University of California, Irvine Large research university $16M annual utilities budget Lab buildings consume 2/3 of campus energy Many energy initiatives to reduce carbon footprint
  3. 3. Campus Energy $avings Challenge Recipe for Success Team Synergy Engineers Safety Management Supportive Users/ Visionary & Researchers Supportive Upper Facility Management Managers Patience
  4. 4. Agenda • Lab Building Energy Projects – Centralized Demand Controlled Ventilation – Exhaust Stack Velocity – Low Flow Fume Hoods • Shuttle Bus Fleet Biodiesel Retrofit • Real Time Building Commissioning • Solar Power
  5. 5. Centralized Demand Controlled Ventilation This Initiative: Does Centralized Demand Controlled Ventilation (CDCV) Allow Us to Reduce Ventilation Rates and Save Energy Without Compromising Safety?
  6. 6. Centralized Demand Controlled Ventilation Lab Ventilation Rates • Recommended range 4 to 12 air changes per hour • Often set at a “constant rate” 24/7 • Usually excessive during low-level process activity or non-occupancy • Explore possibility of “set back” based on lab pollutant concentration
  7. 7. Components of Centralized Demand Controlled Ventilation (CDCV) “Creating a Smart Lab”
  8. 8. CDCV & Energy $avings Monitor Air Contaminants Reduce air changes per hour (ACH) if no contaminants detected Increase air changes per hour (ACH) when contaminants detected
  9. 9. CDCV & Energy $avings Challenge Balance energy savings & safety imiz e Co Witho Max gy mp rom ut Ener s Saf isin g S avin ety g
  10. 10. CDCV Effectiveness Study • Controlled spills ‐ 500 ml of acetone • 4 ach ventilation rate • Acetone measurements  with CDCV and handheld  photo‐ionization detector  • CDCV ventilation activation level: 0.5 ppm • CDCV polling interval time: 14‐17 minutes
  11. 11. CDCV Study Results - 1 • System effective at sensing most chemicals • Polling time can delay spill detection • Did see a 6,100 cfm air volume reduction over the month study • System payback is 2-5 years
  12. 12. CDCV Study Results - 2 • System provides information we don’t normally have: – Contaminant concentrations – Notifies EH&S and Facilities staff • Additional study needed to further test system effectiveness
  13. 13. Agenda • Lab Building Energy Projects – Centralized Demand Controlled Ventilation – Exhaust Stack Velocity – Low Flow Fume Hoods • Shuttle Bus Fleet Biodiesel Retrofit • Real Time Building Commissioning • Solar Power
  14. 14. Lab Building Exhaust Stack Discharge Energy Reduction Study
  15. 15. Exhaust Stack Velocity This Initiative: Can We Reduce Lab Building Exhaust Discharge Rates & Achieve Real Energy Savings Without Compromising Safety?
  16. 16. Lab Exhaust Diagram Animated Wind Re-Entrainment Exhaust Fan Bypass Damper of Contaminated Air Plenum Supply Fan Duct Balcony Fume Hood
  17. 17. Energy Costs and Savings Building Actions Savings Payback Sprague ♦ Do not modify exhaust stack heights 400,000 1.7 years Hall ♦ Install Variable Frequency Drives (VFD) on each fan kW- ♦ Disable or remove the existing bypass dampers hr/year ♦ Set the minimum exhaust flow per stack to 25,000 $48K/year cfm (from 55,000 cfm) Natural ♦ Increase stacks by 4 feet 340,000 3.7 to 5.3 Sciences 1 ♦ Install VFD on fans kW- years ♦ Install wind responsive equipment (consist of two hr/year anemometers and a logic contoller) $41K/year ♦ Reduce exhaust fan flows Biological General Laboratory 510,000 1.6 Years Sciences 3 ♦ Increase stack heights by 5 feet kW- ♦ Reduce flow to 40,000 cfm/stack (from 53,000 cfm) hr/year $61K/year BSL 3 Lab 49,000 5.1 years ♦ Increase stack heights to 4 feet kW- ♦ Reduce flow to 19,000 cfm/stack (from 22,000 cfm) hr/year $6K/year
  18. 18. Exhaust Study Results What we learned: • Wind tunnel testing, as it is used in design, is conservative • Field dispersion studies are not performed on new or renovated exhaust systems • Energy savings can be realized • Didn’t find a “one size fits all” solution
  19. 19. Agenda • Lab Building Energy Projects – Centralized Demand Controlled Ventilation – Exhaust Stack Velocity – Low Flow Fume Hoods • Shuttle Bus Fleet Biodiesel Retrofit • Real Time Building Commissioning • Solar Power
  20. 20. UCI Biodiesel Retrofit Project
  21. 21. Project Summary • UC Irvine student supported shuttle bus system carries 1.2 million passengers per year • Goal was not just a cleaner emissions fleet, but to make the fleet essentially carbon- neutral • Converted campus shuttle bus fleet from diesel to 100% biodiesel (B100) fuel • Decrease NOx emissions
  22. 22. Biodiesel Study Results Percent Reduction/Increase Diesel to B100 Pollutant Type B100 B100 w/NOx Control Smog forming & NOx +19.5% -28.4% criteria pollutant CO Criteria pollutant -48% -98.7% The other pollutants (PM, HC, SO2, toxic air contaminants – PAHs) were not tested because there is enough published data  available that confirms the other pollutants decrease and/or remain the same when using biodiesel fuels.
  23. 23. Conclusion Overall advantages of using biodiesel includes: – Reduces dependence on fossil fuels – Eliminates SO2 because biodiesel does not contain sulfur. – Reduces the emission of particulates, small particles of solid combustion products, by as much as 65 percent (National Biodiesel Board, 2004) – Conversion has reduced annual campus CO2 emissions by approximately 480 tons.1 1Assumes that 100% of fuel consumed is carbon-neutral. Data is based on a national study of effects of biodiesel usage in buses. Life cycle emissions reductions for CO2 from the use of B100 are 78% and 15.7% for B20.
  24. 24. Agenda • Lab Building Energy Projects – Centralized Demand Controlled Ventilation – Exhaust Stack Velocity – Low Flow High Efficiency Fume Hoods • Shuttle Bus Fleet Biodiesel Retrofit • Real Time Building Commissioning • Solar Power
  25. 25. Low Flow / High Efficiency Fume Hoods • Cal/OSHA requirement of 100 FPM capture velocity • Other 49 States do not have this requirement and can use low flow fume hoods • UCI is working with Cal/ OSHA to complete a study showing that low flow fume hoods provide equivalent protection as traditional hoods at 100 FPM
  26. 26. EH&S Partnerships for success! • UC - Irvine EH&S Department • The Henry Samueli School of Engineering • Cal / OSHA • Tom Smith & James Fraley, Consultants • Fisher Hamilton – Fume Hood Donation • Labconco – Fume Hood Donation • Lab Crafters – Fume Hood Donation • Kewaunee – Fume Hood Donation
  27. 27. Low Flow Fume Hood Study Methodology & Results • ASHRAE 110 Containment Test • Human As Mannequin (HAM) • Real world conditions – Loaded hood – Cross drafts – Walk‐bys
  28. 28. Highest Average Concentration for Tracer Gas Tests: Maximum 5-minute average tracer gas concentrations per condition
  29. 29. Low Fume Hood Study Conclusion • Study showed that low flow fume hoods operating at 70 -80 FPM do provide equivalent protection to conventional hoods at an 18 inch sash height
  30. 30. Agenda • Lab Building Energy Projects – Centralized Demand Controlled Ventilation – Exhaust Stack Velocity – Low Flow Fume Hoods • Shuttle Bus Fleet Biodiesel Retrofit • Real Time Building Commissioning • Solar Power
  31. 31. Real Time Building Commissioning Building Sqft Cost Engineering Unit 3 122,470 $50,404,000 Social & Behavioral Sciences Building 116,143 $40,743,180 Humanities Building 74,919 $28,997,000 Medical Education Building 66,906 $30,018,007 Steinhaus Hall Exterior Renovation 112,857 $4,620,000 Arts Building 59,492 $33,764,007 UCI MC Clinical Laboratory Replacement Building 48,000 $32,813,000 New University Hospital Shell Space Completion/Site 63,695 $96,625,000 Improvements Stem Cell Research Center Building 100,635 $46,257,931 Law School Library 21,800 $1,974,845
  32. 32. Real Time Building Commissioning • Energy savings can be significant when systems are operating at peak. • Design and Construction Services, Facilities Management, and EH&S are consistently challenged with systems performance once the user moves in. • Post occupancy survey.
  33. 33. Real Time Building Commissioning Working toward making this program happen on campus – Developed a Lab Design guide to survey the renovation and building of lab space • Given to contractors in the “SCHEMATIC DESIGN” phase of a project – Established buy-in from D&CS and FM on approach
  34. 34. Real Time Building Commissioning Follow up Systems – Team of EH&S, D&CS & FM personnel with the appropriate knowledge – Create a timeline after move in – Create an agreement between EH&S, FM and D&CS as to who fixes/pays for issues
  35. 35. Real Time Building Commissioning • Study Croul Hall, Cal IT2, and other new buildings that have issues after move in • Create a report that outlines the potential energy savings and maintenance issues
  36. 36. Agenda • Lab Building Energy Projects – Centralized Demand Controlled Ventilation – Exhaust Stack Velocity – Low Flow Fume Hoods • Shuttle Bus Fleet Biodiesel Retrofit • Real Time Building Commissioning • Solar Power
  37. 37. Solar Power • UCI has partnered with So-Cal Edison to install solar panels on our south facing buildings • Presently over 9 buildings generating over 900 KW DC, currently more being installed! • No cost to the university • University to take ownership after 5 years
  38. 38. EH&S Workload Challenge This energy efficiency movement has increased our calls and our involvement with building practices related to energy efficiency and customer service in a challenging budget year
  39. 39. EH&S Workload Challenge • Indoor Air Quality calls – Odors • Indoor Air Quality calls ‐ Temperature • Water Temperature calls • Group presentations on building changes • Solar power array calls on health effects • Shrinking staff to handle the above
  40. 40. Energy Efficiency on Campus Balancing Safety & Energy Savings A Summary of Initiatives Questions? Marc Gomez, Dick Sun, Joe Rizkallah magomez@uci.edu, dtsun@uci.edu, jar@uci.edu

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