BOA Electrical

E L E C T R I C A L Outline F Computers and printers F Appliances F Demand and consumption F ENERGY STAR ratings F Car plugs F Miscellaneous equipment

E L E C T R I C A L Piner Olivet Lifestyle Program F Lifestyle Campaigns F students and teachers F custodian support F Examples F Computers off F Lights off F Waste less

E L E C T R I C A L Piner Olivet Technical Program F Student technical audits F Building Operator Training F Technical audits F Energy monitoring and savings reports F Building retrofits

E L E C T R I C A L Importance of custodian F Focus of Piner Olivet program in schools F Interface between district, teachers and students F Source of technical information F Provides continuity F Knows schools better than anyone F Can produce large savings F Key to Piner Olivet program success

E L E C T R I C A L Piner Olivet district update F Lifestyle Program news F Recent events F Upcoming events F Technical Program news

E L E C T R I C A L Piner Olivet in your school F Success stories F Areas to improve

E L E C T R I C A L Benefits of electrical equipment efficiency F Reduces energy use and cost F Improved quality and comfort F Less maintenance required F Extended equipment life F Less waste heat F Positive impact on climate change issues

E L E C T R I C A L Personal computers – switching off F Switching off results in significant energy savings F Common misconception: computers must run 24 hours/day F 30% to 40% are left on overnight and weekends

Cost and energy use vs. computer hours on F 100 watts at 5 cents/kWh E L E C T R I C A L

Personal computers – switching off Computers often left on after class or even during vacation breaks E L E C T R I C A L

Personal computers – switching off F Monitors can be switched on/off 5 times per day F Monitors off if unused for 15 minutes F Major companies not unduly concerned F Switched-off computers last longer

E L E C T R I C A L Computer energy consumption F Average computer: 80 to 110 watts F 15-inch colour monitor: 60 watts F CPU: 40 watts F Larger monitors use more energy

E L E C T R I C A L Energy-saving features F Shut-off CPU and monitor after hours F Often used only 2 to 4 hours per day F Use existing energy saving features F Energy Star - US Government energy efficiency program F New equipment should meet guidelines

E L E C T R I C A L Energy-saving features Macintosh Computers™ F Energy Saver set up in Control Panel F “Sleep mode” = 2 watts F “Standby mode” = 40 watts F Restart with mouse or keyboard

E L E C T R I C A L Energy-saving features The Macintosh Energy Saver set-up E L E C T R I C A L

Energy-saving features IBM™ - Type Computers F Power Management Option in Control Panel F Activates after period of inactivity F Monitor off F Standby F Hibernation F Restart with mouse or keyboard

E L E C T R I C A L Screensavers F Screensavers: save 10 watts F Monitor off manually: save 60 watts F Better to turn off monitor

E L E C T R I C A L Screensavers Computers on screensaver mode should be turned off E L E C T R I C A L

Other benefits to shutting off F Less heat generated F Detrimental to electronic components F Maximum operating temperature 32°C F Monitors that are shut off don’t emit radiation F File server caution: mark to prevent shut off

E L E C T R I C A L Printers F Inkjet printers F 15 to 20 watts when printing F 7 to 9 watts on standby F Laser printers F 250 to 800 watts when printing F 10 to 20 watts on standby

E L E C T R I C A L Printers F Off overnight and weekends F Local printer: off during day F Printer serving remote computers: on during the day F Automatic time clock F Use existing energy-saving features F Appropriate size

E L E C T R I C A L Photocopiers F Off during vacant periods F Use energy saving modes F Time clock for automatic shut-off F Appropriate size

E L E C T R I C A L Freezers F Keep at -18°C F Away from heat sources F Defrost when ice is 5 mm thick F Air space around freezer

E L E C T R I C A L Freezers F Keep at least 2/3 full F Clean exposed condenser coils F Open door only as long as necessary F Unplug in summer F Ventilate enclosed space

E L E C T R I C A L Freezers Keep 2/3 full; defrost regularly E L E C T R I C A L

Freezers Provide adequate air space E L E C T R I C A L

Refrigerators F Locate away from heat F Clean condenser coils F Leave space between wall and coils F Use power saving control F Empty and unplug in summer F Refrigerate items only when necessary

E L E C T R I C A L Refrigerators Condensor clogged with dirt E L E C T R I C A L

Refrigerant issues F Ozone depletion issues F R-12 refrigerant being phased-out F New refrigerant is R-134A F Consider type of refrigerant when acquiring new or used appliances

E L E C T R I C A L What are a kW and a kWh? F Utilities charge for both demand and consumption F Demand (kW or kVA) F Amount of electricity required at a single point in time F Total electricity load F Utilities usually charge for the highest kW peak that occurs each month

E L E C T R I C A L What are a kW and a kWh? F Consumption (kWh) F Amount of electricity used over time F kWh = kW x hours F School electrical meter records demand and consumption each month

E L E C T R I C A L School demand profile F Typical school - total building load E L E C T R I C A L

Analog electricity meter E L E C T R I C A L

Thermal demand meter E L E C T R I C A L

Savings by unplugging refrigerator F Typical older refrigerator, 120 kWh/month F Electricity averages $0.05 per kWh F 120 kWh/month x $0.05/kWh = $6.00/month F Unplug in July and August F $6.00/month x 2 months = $12.00 total

E L E C T R I C A L ENERGY STAR Ratings F Testing and labelling program F Indicates typical kWh/year energy usage F Major appliances must have ENERGUIDE label F Easy to compare efficiency F Seek highest equipment efficiency

E L E C T R I C A L ENERGUIDE label E L E C T R I C A L

Electric kilns F Use 18 to 45 kW F Could set a peak demand F Use “load scheduling” instead F Operate at night F Use a timer

E L E C T R I C A L Equipment with digital readouts F LED displays: 2 to 4 watts F Unplug during vacant periods

E L E C T R I C A L Equipment with digital readouts LED display draws power E L E C T R I C A L

Vending machines F Unplug during vacant periods F Use time clocks F Remove unnecessary lights F Negotiate energy savings initiatives F Use Vending Miser

E L E C T R I C A L Refrigerated vending machines F $100 to $150/year to run F Add to heat load F Additional cooling costs up to $10/year

E L E C T R I C A L Vending Miser Vending Miser can reduce energy use E L E C T R I C A L

Refrigerated vending machines Lights and compressor increase energy use E L E C T R I C A L

Block heater operation F % on time to maintain engine block at -7 °C E L E C T R I C A L

Car plug controls F Load scheduling to reduce peak demand F Time clocks F Often bypassed F Check time settings F Part of building automation system

E L E C T R I C A L Car plug controls F Outdoor temperature control activated at -20 °C F Individual measures F Timer cords F Power Saver cords

E L E C T R I C A L Car plug controls E L E C T R I C A L

Portable electric heaters F Electricity costs 5 times more than natural gas F Typically 1,500 watts F Could add to peak demand F Adjust heating and ventilation system F Avoid using electric heaters

E L E C T R I C A L Fixed electric heaters F Use lowest setting for adequate comfort F Check dials regularly F Breaker off in spring, summer, and fall F Shut off during vacant periods

E L E C T R I C A L Time clock

E L E C T R I C A L Drinking water coolers F 400 to 1,000 kWh per year F $20 to $50 per year F Shut off during vacant periods F Install time clocks F Adjust thermostat setting

E L E C T R I C A L Custodian is key to program success F Focus of conservation initiatives F Interface F Technical information F Continuity F Facility knowledge F Impact on savings F Key to success

BOA Electrical