BPI Building Analyst I Training

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Energy Efficiency at Home
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Energy Efficiency and Energy Management Why is
it important today?
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What is Energy Efficiency?

• Energy efficiency is doing more with the same
  amount of energy or less energy.
• Energy efficiency saves money and makes buildings
  more comfortable, healthy, and safe.

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Benefits of Energy Efficiency

• Lowers utility bills
• Increases comfort safety
• Reduces pollution
• Makes our economy stronger
• Increases our energy security

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There are many ways we can use energy more
efficiently. Can you name some?
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Past Achievements of Energy Efficiency

• Mandated efficiency improvements for
  refrigerators in the 80s have prevented the
  construction of over 40 large power plants.
  (Rocky Mountain Institute)
• It is estimated that efficiency improvements
  already made have reduced our total energy
  consumption by 25. (Alliance to Save Energy)

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National ENERGY STAR Program

• Joint program of the U.S. Environmental
  Protection Agency and the U.S. Department of
  Energy.
• National symbol for energy efficiency.
• Products and/or buildings must meet certain
  standards to display label.
• For homes businesses.

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There is still a lot to be done!

• U.S. power plants discard more energy in waste
  heat than is needed to run the entire Japanese
  economy. (Rocky Mountain Institute )
• According to U.S. EPA, our nations buildings use
  30 more energy than they need to. These savings
  can be had simply by using existing technology.

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How Do You Use Energy at Home?
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What is the largest user of energy in your home?
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Boiler
Furnace
ducts
pipes
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True or False?
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Don't turn down your thermostat at night. You
will use just as much energy as you save at night
heating the building back up in the morning."
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It's false!
The Facts
Studies have confirmed that thermostat
temperature setback saves energy. You can expect
to save roughly 1 to 3 of your fuel bill for
every degree you turn down the temperature for
100 hours per week in the heating season.
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What is the second largest user of energy in your
home?
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Electricity Whats a Watt?

• Its a measurement of electrical power.
• The more watts that a light or appliance uses,
  the more energy it uses.
• An efficient light or appliance does more work
  while using fewer watts to get the job done.
• Electric companies charge us for how many
  kilowatt hours we use. A kilowatt is 1,000 watts.

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What are the major users of electricity in the
home?

• Electric Space Heaters
• Air Conditioning
• Electric Water Heaters
• Refrigerators/Freezers
• Electric Dryers
• Pool heaters/hot tubs
• Lighting
• Home entertainment and computers

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What is the third largest user of energy in your
home?
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Natural Gas Water Heater
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Simple Ways to Save Heating, Cooling Hot Water

• Heating Turn down the heat at night and whenever
  you leave for the day. Use a programmable
  thermostat.
• Cooling Fans use much less energy than air
  conditioning. Use them whenever possible.
• Hot Water Set water temperature to 120oF.

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What is the fourth largest user of energy in your
home?
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• Refrigerators
• Refrigerator efficiency has improved dramatically
  in the last 30 years.
• A refrigerator that is only 10 years old uses
  double the electricity of a new ENERGY STAR
  refrigerator.
• To see how your refrigerator compares to an
  ENERGY STAR model go to www.GetEnergySmart.org
  and click on ENERGY STAR products. Click on
  REFRIGERATOR and use the savings Calculator.

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Summary Where We Use Energy at Home
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Simple Ways to Save Electrical Appliances

• Appliances Evaluate to determine if newer, more
  energy-efficient models would be beneficial.
• Refrigerator Clean coils and check to see if
  gaskets are tight.
• Computer Enable power management settings.

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• Personal Computers
• Computers consume from 30 watts (laptops) to
  over 200 watts for some older desktop models.
• In systems that use Cathode Ray Tube (CRT)
  monitors, the monitor is the biggest user of
  energy in the system.
• New, flat panel monitors use 30 less energy.

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Disable screensavers!
Personal Computers
Enable Power Management Settings

• Set your computer to automatically go into
  STANDBY mode after 10 minutes.
• To bring it back up, either move your mouse or
  hit the power button (depending on your machine).

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Lighting
Types of Lighting

• Incandescent
• Fluorescent

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Incandescent
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Fluorescent
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• Ballast maintains an electric current that runs
  through the tube from one end to the other.
• Current causes mercury gas to emit ultraviolet
  (UV) radiation (which we cant see).
• Phosphors on the inside of the tube glow when
  they come in contact with the UV.

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Compact Fluorescent

• Miniature fluorescent with built in ballast
• Ideal for replacement of incandescent lamps
• Saves 66-75 on energy use
• Lasts 7-10 times longer than an incandescent
• Low heat output
• Improved color rendition

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Do CFLs really save money? Do the Math!
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Simple Ways to Save Lighting

• Turn off the lights whenever they are not in use.
• Use daylighting when possible.
• Use task lighting.

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Replace incandescent lighting with ENERGY STAR
CFLs.
Start with the fixtures that you use the most.