2. University of California, Irvine Large research
university$16M annual utilities budget Lab buildings consume 2/3 of
campus energyMany energy initiatives to reduce carbon footprint 3.
Campus Energy $avings Challenge Recipe for SuccessTeam Synergy
Engineers Safety Management SupportiveUsers/ Visionary
&ResearchersSupportiveUpperFacility Management ManagersPatience
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. Centralized DemandControlled
Ventilation This Initiative: Does Centralized Demand Controlled
Ventilation (CDCV) Allow Us to Reduce Ventilation Rates and Save
Energy WithoutCompromising Safety? 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. Components of Centralized Demand Controlled
Ventilation (CDCV)Creating a Smart Lab 8. CDCV & Energy $avings
Monitor Air ContaminantsReduce air changes per hour (ACH)if no
contaminants detectedIncrease air changes per hour (ACH) when
contaminants detected 9. CDCV & Energy $avingsChallengeBalance
energy savings & safetyimize Co Witho Max gy mp rom utEner sSaf
isingS avinety g 10. CDCV Effectiveness Study Controlledspills
500mlofacetone 4achventilationrate Acetonemeasurements
withCDCVandhandheld photoionizationdetector
CDCVventilationactivationlevel:0.5ppm
CDCVpollingintervaltime:1417minutes 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. CDCV Study Results - 2
System provides information we dont normally have: Contaminant
concentrations Notifies EH&S and Facilities staff Additional
study needed to further test system effectiveness 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.
Lab Building Exhaust Stack Discharge Energy ReductionStudy 15.
Exhaust Stack VelocityThis Initiative:Can We Reduce Lab Building
Exhaust Discharge Rates & Achieve Real Energy Savings
WithoutCompromising Safety? 16. Lab Exhaust Diagram AnimatedWind
Re-Entrainment Exhaust FanBypass Damperof Contaminated Air Plenum
Supply Fan DuctBalconyFume Hood 17. Energy Costs and Savings
Building ActionsSavings 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
BiologicalGeneral Laboratory510,000 1.6 Years Sciences 3 Increase
stack heights by 5 feetkW- Reduce flow to 40,000 cfm/stack (from
53,000 cfm) hr/year $61K/yearBSL 3 Lab49,0005.1 years Increase
stack heights to 4 feet kW- Reduce flow to 19,000 cfm/stack (from
22,000 cfm)hr/year $6K/year 18. 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 Didnt find
a one size fits all solution 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. UCI Biodiesel
Retrofit Project 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.
Biodiesel Study ResultsPercent Reduction/Increase Diesel to B100
PollutantType B100B100 w/NOxControlSmog forming & NOx +19.5%
-28.4%criteria pollutantCOCriteria pollutant -48%
-98.7%Theotherpollutants(PM,HC,SO2,toxicaircontaminants
PAHs)werenottestedbecausethereisenoughpublisheddata
availablethatconfirmstheotherpollutantsdecreaseand/orremainthesamewhenusingbiodieselfuels.
23. ConclusionOverall advantages of using biodiesel includes:
Reduces dependence on fossil fuels Eliminates SO2 because biodiesel
does not containsulfur. Reduces the emission of particulates, small
particles ofsolid combustion products, by as much as 65
percent(National Biodiesel Board, 2004) Conversion has reduced
annual campus CO2 emissionsby approximately 480 tons.1 1Assumesthat
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. 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. 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. 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. Low Flow Fume Hood StudyMethodology & Results
ASHRAE110ContainmentTest HumanAsMannequin(HAM) Realworldconditions
Loadedhood Crossdrafts Walkbys 28. Highest Average Concentration
for Tracer Gas Tests:Maximum 5-minute average tracer gas
concentrations per condition 29. Low Fume Hood StudyConclusion
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. 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. Real Time BuildingCommissioning
BuildingSqft Cost Engineering Unit 3122,470 $50,404,000 Social
& Behavioral Sciences Building116,143 $40,743,180Humanities
Building74,919$28,997,000Medical Education
Building66,906$30,018,007Steinhaus Hall Exterior Renovation112,857
$4,620,000 Arts Building59,492$33,764,007 UCI MC Clinical
Laboratory Replacement Building48,000$32,813,000 New University
Hospital Shell Space Completion/Site 63,695$96,625,000 Improvements
Stem Cell Research Center Building100,635 $46,257,931Law School
Library21,800$1,974,845 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. Real Time Building
Commissioning Working toward making this programhappen 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.
Real Time BuildingCommissioning 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. Real Time
BuildingCommissioning 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.
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. 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. EH&S Workload ChallengeThis energy efficiency
movementhas increased our calls and our involvement with building
practicesrelated to energy efficiency andcustomer service in a
challenging budget year 39. EH&S Workload Challenge
IndoorAirQualitycalls Odors IndoorAirQualitycalls Temperature
WaterTemperaturecalls Grouppresentationsonbuildingchanges
Solarpowerarraycallsonhealtheffects Shrinkingstafftohandletheabove
40. Energy Efficiency on Campus Balancing Safety & Energy
SavingsA Summary of InitiativesQuestions?Marc Gomez, Dick Sun, Joe
[email protected], [email protected], [email protected]
