Best Practices: Using the Latest Energy Technology to Reduce Your Energy Consumption

6th Annual Northern Ohio energy Management Conference

Bob Misbrener – Kent State UniversityH. Kelly Tisdale – The Brewer-Garrett Co.

September 28, 2011

AgendaCurrent Technologies

LightingBuilding AutomationWater ConservationGreen EducationRenewable

Future TechnologiesLightingBuilding AutomationRenewable

Questions

Current Best Practices - Lighting•Fluorescent lighting• 25w fluorescent lamps with 2nd generation electronic ballasts

• High CRI of 85+• < 10% lamp lumen depreciation over life of the lamp• Drastically improved lamp life approaching 50,000 hours in some cases

• Efficacies now above 100 lumens/watt• Extremely low mercury content, as low as 1.7 milligrams

Current Best Practices - Lighting• T5HO fluorescent highbays to replace interior HID• High CRI of 85+ vs. 60 with standard metal halide and 20

with high pressure sodium• 5% lamp lumen depreciation vs. up to 60% loss with HID• Long lamp life: 36,000 Hours vs. 20,000-24,000 with HID• Fixture efficiencies over 90%• Instant restrike vs. up to 15 minutes with metal halide

LED lighting• Low maintenance exit signage• Downlights with drastically increased fixture efficiencies• Exterior lighting with greatly improved uniformity, lumen

depreciation and CRI

Current Best Practices - AutomationCO2 control

Large/common spacesOnly conditions outdoor air as needed800 ppm above ambient (typically 250 ppm)

VAV control with occupancy sensorsMany times occupancy sensor exists on

lightingTurn off minimum airLowers fan speedLowers quantity of outdoor air

Payback

Current Best Practices – Water Conservation

Sub-metering – cooling towers, sprinkler systems Less than 1 year payback

Fixture change outUrinals 1 gal. to 1 pintToilets 3.5 gal. to 1.2 gal.5 to 10 year payback

Water automationLimited consumption savings but may have

additional benefitsWater cooled condensers

Payback 5 years or less

Current Best Practices – Green Education

Must be able to operate systems installedTrain maintenance staff

Educate staffKnowledge is savingsA knowledge of “impact of actions” (i.e.- what it

costs to leave lights on); create actionOngoing trainingTypical savings may be 3% to 6% of entire

utility bill

Current Best Practices - RenewableSolar

Power Purchase Agreements (PPA)Subsidies are diminishingSales of SRECs Looking for future subsidies – without

subsidies the payback may be 25 to 50 years

Examining Energy Conservation Opportunities

Future Best Practices - LED Benefits / ConcernsOperational savings

Reduced recycling costs, extremely long life, vibration and orientation proof

Energy and HVAC savings – Up to 50% in some casesInstant-on capabilities0-100% dimmabilityColor changingExceptional lamp lumen depreciationNo UV, No IR, No MercurySmall size allows for many new designs and ideas from the

ground up that could not have been possible beforeDrawbacks?COST!Glare issues if not properly applied or designed

Established Types of LED ProductsGeneral Illumination Replacements

Incandescent Halogen Downlights Linear

Landscape Architectural Signage Area

Technologies - OLEDOLED Technology

Building Automation

Future Best Practices- AutomationWireless technologyGoogle

OEMEnOcean

Small packets of informationEnergy harvesting Vast / expanding suppliers

ZigbeeOlder but playing catch-up with energy

harvesting

Future Technologies – Thin Film Solar

Printing solar filmsPromise of low cost = $1 per wattIncrease efficiencies

Future Best Practice –Honeywell Wind Turbine

1500 kWh$50002 mph cut–in speed

Future Best Practice –Honeywell Wind Turbine

Turn traditional design inside outMultiple mounting options

26 kW systemsProven exothermic Stirling enginePeak followingGrid level production

Future Best Practices – Stirling Energy Systems

Future Best Practices –Solar Power and the Fuel Cell

Solar panels used for electrolysisHydrogen and Oxygen recombine in fuel cellHeats domestic waterPower availability very high – closed loop

The End