LOW AND NO COST WAYS LOW AND NO COST WAYS TO SAVE ENERGY!!!TO SAVE ENERGY!!!

ROGER PERRYROGER PERRY

Facilities ManagerFacilities Manager

Phillip Merrill Phillip Merrill Environmental CenterEnvironmental Center

Annapolis, MD Annapolis, MD

How can you save for no How can you save for no cost?cost?

Two waysTwo ways

1.1. Adjust the settingsAdjust the settings1.1. Printer Sleep modesPrinter Sleep modes

2.2. Water TemperatureWater Temperature

3.3. Vestibule / Hallway temp settingsVestibule / Hallway temp settings

How can you save energy How can you save energy for no cost?for no cost?

2.2. TURN IT OFF!!TURN IT OFF!!

How much can turning it How much can turning it off save?off save?

LETS DO THE MATH!LETS DO THE MATH!• Hours in a year?Hours in a year?

– 24*365.25 = 8766hrs./yr.24*365.25 = 8766hrs./yr.

• Work hours in a year?Work hours in a year?– 8*365.25-(104*8) = 2090hrs./yr.8*365.25-(104*8) = 2090hrs./yr.

How much can turning it How much can turning it off save?off save?

LETS DO THE MATH!LETS DO THE MATH!

Desks are not occupied 76% of the Desks are not occupied 76% of the time.time.

And that’s not counting lunch, And that’s not counting lunch, vacations or sick days!!!vacations or sick days!!!

How much can turning it How much can turning it off save?off save?

Leaving equipment on 24/7 uses 4 Leaving equipment on 24/7 uses 4 times the energy of turning it on times the energy of turning it on only when working.only when working.

DIFFERENT STRATIGIES DIFFERENT STRATIGIES FOR TURNING IT OFF!!FOR TURNING IT OFF!!

• Employee ParticipationEmployee Participation– Get them to turn off everything at Get them to turn off everything at

their desk when they leave including their desk when they leave including computers.computers.

– Reinforce energy saving habitsReinforce energy saving habits• Post signs reminding to turn off lights Post signs reminding to turn off lights

when leaving a roomwhen leaving a room

DIFFERENT STRATIGIES DIFFERENT STRATIGIES FOR TURNING IT OFF!!FOR TURNING IT OFF!!

The problem with employee The problem with employee participation is…participation is…

You can’t count on them to do it all You can’t count on them to do it all of the time.of the time.

DIFFERENT STRATIGIES DIFFERENT STRATIGIES FOR TURNING IT OFF!!FOR TURNING IT OFF!!

• Occupancy SensorsOccupancy Sensors– Manual & AutomaticManual & Automatic

• TimersTimers• Computer Programs.Computer Programs.

Occupancy sensors..Occupancy sensors..

Manual or Automatic?Manual or Automatic?

Low Cost Energy Saving Low Cost Energy Saving Techniques.Techniques.

Automatic Occupancy Automatic Occupancy Sensors!Sensors!

• AdvantagesAdvantages

– Automatic onAutomatic on– Automatic offAutomatic off– Can be set not to come on if ambient Can be set not to come on if ambient

light is above settinglight is above setting– Good if convenient switch placement Good if convenient switch placement

is a problemis a problem

Automatic Occupancy Automatic Occupancy Sensors!Sensors!

• DisadvantagesDisadvantages– Can be tricky to set properlyCan be tricky to set properly

• Too sensitive-false onsToo sensitive-false ons• Not sensitive enough-false offsNot sensitive enough-false offs

• Don’t need auto-on in most casesDon’t need auto-on in most cases

Manual On Occupancy Manual On Occupancy SensorsSensors

• AdvantagesAdvantages– Easy to set sensitivity-on highEasy to set sensitivity-on high– Because sensitivity is set to high, time Because sensitivity is set to high, time

delay can be very shortdelay can be very short– Will already be off if light levels are Will already be off if light levels are

high enoughhigh enough– Automatic offAutomatic off

Manual On Occupancy Manual On Occupancy SensorsSensors

• DisadvantagesDisadvantages– Not appropriate where switch Not appropriate where switch

placement would be a problemplacement would be a problem

– Have to turn onHave to turn on• Not really a problem as who forgets to Not really a problem as who forgets to

turn something they need onturn something they need on

Timers Timers

• Work well for…Work well for…– Places where occ sensors won’t workPlaces where occ sensors won’t work– Allows set turn off times with simple, Allows set turn off times with simple,

temporary override by tenants for temporary override by tenants for special occasionsspecial occasions

Don’t Make Energy Saving Don’t Make Energy Saving Inconvenient!Inconvenient!

• Have coffee maker on a timer so it’s Have coffee maker on a timer so it’s ready to go in the morningready to go in the morning

• Make sure staff understands how timers Make sure staff understands how timers and sensors are set upand sensors are set up

• Have a parking area with occupancy Have a parking area with occupancy sensors for staff arriving in the darksensors for staff arriving in the dark– May have to change bulbs in that area for May have to change bulbs in that area for

instant oninstant on

Plug LoadsPlug LoadsA Moving TargetA Moving Target

• Controlling plug loads is biggest Controlling plug loads is biggest challenge because it needs challenge because it needs constant monitoringconstant monitoring

• Use personal occ sensors at desks Use personal occ sensors at desks (everything except computer (everything except computer should be plugged into it)should be plugged into it)

Plug LoadsPlug LoadsA Moving TargetA Moving Target

• Use a “Venda-miser” on vending Use a “Venda-miser” on vending machinesmachines– Our coke machine had a measured Our coke machine had a measured

draw of 106.5kwh a week which would draw of 106.5kwh a week which would cost $498.42 a year to runcost $498.42 a year to run

– A Venda-miser cut that to 57.8kwh a A Venda-miser cut that to 57.8kwh a week cutting yearly costs to $270.50.week cutting yearly costs to $270.50.

Plug LoadsPlug LoadsA Moving TargetA Moving Target

• Put coffee maker on a programmable Put coffee maker on a programmable timertimer

• Put little used printers on a manual Put little used printers on a manual personal occupancy sensorpersonal occupancy sensor

• Make sure staff knows how to use Make sure staff knows how to use sensors and timerssensors and timers

• Keep checking to make sure sensors and Keep checking to make sure sensors and timers aren’t bypassedtimers aren’t bypassed

Look For Other WaysLook For Other Ways

• Lights that are on for showLights that are on for show• Heat from the server roomHeat from the server room• Areas that are over litAreas that are over lit

– Use dimming ballastsUse dimming ballasts• Compact fluorescents to replace Compact fluorescents to replace

incandesantsincandesants• Turn off things that are out of Turn off things that are out of

season season