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Lets Get Energized

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An electric pencil sharpener uses 2.4 amps. What are the watts? ... Electric Pencil Sharpener. UL Label. Metrically Correct. To convert Watts to Kilowatts ... – PowerPoint PPT presentation

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Title: Lets Get Energized


1
Lets Get Energized
  • Saving Energy At
  • School Sites

2
Definitions of Energy
  • Einsteins E MC2
  • Science texts - Ability to do work
  • Next...

3
Electrical Power Generating Plant
  • Fossil fuels are burned to heat water.
  • The steam turns a turbine which creates the flow
    of electrons.
  • Cool water is used to condense the steam (60 to
    70 lost energy).
  • Next...

4
Electrical Terms
  • The electrical pressure Volts (V)
  • The flow of the electrons Amperage (amps)
  • The work produced Watts
  • Next...

5
What are the Watts
  • To calculate the watts multiply the amps by the
    voltage.
  • Watts Volts x Amps
  • An electric pencil sharpener uses 2.4 amps. What
    are the watts?
  • Average voltage in United States is 120
  • 2.4 amps x 120 volts 288 Watts
  • Next...

6
Computer UL Label
7
Laser Printer UL Label
8
Microwave UL Label
9
Electric Pencil Sharpener UL Label
10
Metrically Correct
  • To convert Watts to Kilowatts -
  • Divide by 1000
  • 1200 Watts ? kilowatts
  • 1200 Watts 1000 12 kilowatts
  • Next...

11
Time and Energy
  • Electrical energy consumption is measured using
    units of time called kilowatt-hours (kwh).
  • To calculate kwh multiply the wattage by hours.
  • Power companies bill by charging so many cents
    per kilowatt-hour.
  • More later...

12
Environmental Impacts of Electrical Power
  • Land destruction from fuel extraction
  • Pollution or hazardous waste products
  • Thermal pollution from waste heat
  • Next...

13
Annual Atmospheric Emissions From kwh of one Lee
County Elementary School
  • Sulphur Dioxide 11,855 lbs.
  • Oxides of Nitrogen 14,644 lbs.
  • Particulate matter 465 lbs.
  • Carbon Dioxide 19,525,081 lbs.
  • Volatile Organic
  • Compounds 697 lbs.
  • Water Consumption 8,716,554 gallons
  • So What?

14
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15
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16
Energy Consumption in United States
  • 5 of worlds population
  • 30 of worlds energy
  • 16 million barrels of oil daily
  • Next...

17
Years of Recoverable Reserves Remaining in the
United States
  • Crude Oil 23 years
  • Natural Gas 68 years
  • Uranium 364 years
  • Coal 7,007 years
  • Renewable not depletable
  • We all live on an island...
  • Next...

18
Lee County School DistrictUtility Costs
Propane 103,097 gal 66,108.90 Water
Sewer 10,700,723 kgal 1,294,967.30 Electric 112
,677,294 kwh 7,688,321.00 Next...
19
School District Energy Totals
  • Total Dollars per year
  • 7.69 million
  • Total kwh per year
  • 113 million
  • Next...

20
Show Me the Watts...
21
Lee County School District Energy Consumption
10
30
60
22
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23
Steps to Reducing Energy
  • Review your past energy use
  • Audit your current energy use
  • Find opportunities for reductions
  • Gather and share ideas
  • Commit and implement
  • Monitor and reward success
  • Break

24
Steps to Reducing Energy
  • Review your past energy use
  • Audit your current energy use
  • Next

25
Types of Audits
  • Heating, Ventilation, Air Conditioning (HVAC)
  • Lighting
  • Equipment and Machines
  • Next...

26
Divide and Conquer
  • Studies show that including support staff
    increases chance of success by a factor 100.
  • Studies show that including students leads to
    increased test scores.

27
State Department of EducationGoal 3 Standards
  • Information Managers
  • Effective Communicators
  • Numeric Problem Solvers
  • Creative and Critical Thinkers
  • Responsible Workers
  • Resource Managers
  • Systems Managers
  • Cooperative Workers
  • Effective Leaders
  • Next...

28
Reducing Energy used for HVAC Systems
  • On average, for every degree you lower your
    thermostat you raise cooling costs by 3.
    Conversely, if you raise the thermostat one
    degree you can reduce cooling costs by 3.
  • Next...

29
Reducing Energy Used for Lighting
  • Contrary to common belief, letting a light burn
    rather than turning it off never saves electrical
    energy. When electric lighting is not required,
    switch it off.
  • Next...

30
Reducing Energy Used for Equipment and Machines
  • theres basically only one way to save energy
    used by your present office machines turn them
    off when not needed.
  • Next...

31
Steps to Reducing Energy
  • Review your past energy use
  • Audit your current energy use
  • Find opportunities for reductions
  • Gather and share ideas
  • Commit and implement
  • Monitor and reward success
  • Next

32
Dont Hesitate to Call, Email or Surf our Web Site
  • Cindy Bear,
  • Resource Teacher
  • Carl Melamet,
  • Resource Teacher
  • Environmental Education
  • 275-3033
  • www.lee.k12.fl.us/dept/ee
  • Thats all folks...
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