E-Conservation HEMS Energy Efficient Lighting Slide Notes:
1.
Title Slide
2.
Identify legislation that affects lighting standards and efficiency
- Identify various types of energy efficient lamps (bulbs)
- Learn how to shop for lighting and understand how to read the new lighting label
3.
Department of Energy (DOE) establishes energy efficiency or maximum allowable energy
use standards for most major household appliances and certain commercial and industrial
equipment (Standards initially set by the Nat’l Appliance Energy Conservation Act of
1987).
• This act has been amended several times, and most recently by the Energy
Independence and Security Act (EISA) 2007. Products must meet the standards in
order to be imported or manufactured in the US market
4.
Phase in Schedule
5.
Among other things, it set new requirements for bulbs:
• Sets performance standard of light output (lumen) for energy used (watts)
• Many light bulbs meet the new standards
• Some traditional incandescent bulbs do not meet the new standards
There are many light bulbs that meet the new standards (including energy saving
incandescent, CFL and LED), however, there are some common light bulbs that do not
meet the new standards. Traditional 40,60, 75 and 100 W incandescent bulbs are less
efficient and don’t meet the new standards. These give of 90% heat and only 10% light.
More detail about the EISA Lighting Efficiency Standards: (You do not need to share
this information but it is provided in case there are questions.)
• Lighting energy efficiency standards for general service incandescent lighting in
2012 and sooner for general-service tubular fluorescent lighting and metal halide
lamp fixtures. Sets performance standard of light output (lumen) for energy used
(watts)
• Many light bulbs meet the new standards
• Some traditional incandescent bulbs do not meet the new standards.
• There are many light bulbs that meet the new standards (including energy saving
incandescent, CFL and LED), however, there are some common light bulbs that do
not meet the new standards. Traditional 40,60, 75 and 100 W incandescent bulbs
are less efficient and don’t meet the new standards. These give of 90% heat and
only 10% light.
• The standards apply to the manufacture or import of bulbs
• There are some exceptions including 3-way bulbs, appliance bulbs, others
• The new standards do not affect all bulbs. Various specialty bulbs are exempt,
including appliance bulbs, heavy-duty bulbs, colored lights, three-way bulbs, and
others.
•
•
The new energy efficiency standards will affect conventional, pear-shaped medium
size screw-in, light bulbs, and some reflector bulbs like the ones we use in
traditional lighting fixtures in our homes.
In total there are 22 types of traditional incandescent lamps that are exempt.
6.
EISA is changing the way we shop for light bulbs
7.
Before we go any further, we need to define some terms. Lumen is the unit of measure
describing the quantity or intensity of light emitted from a source of light, for example, a
light bulb (lamp). A watt is a unit of power denoting the rate at which electricity is used.
Put the two together, and you get lumens per watt (LPW), also called “efficacy” (often
wrongly referred to as efficiency). It is similar to “miles per gallon” for an automobile and
is a measure of how effective the light source is in converting the watts or energy into light.
Lumen and wattage values are specified on the lamp’s packaging, i.e., 100 watts, 1700
lumens. This helps to identify how bright or dim the lamp is, important because we may
want to create a mood through lighting—we typically associate low intensity with a
relaxed and intimate atmosphere.
Efficiency is measured by the number of lumens per watt a bulb provides.
8.
Lumens
9.
Lets watch a brief video from Energy.gov that explains lumens and how to shop for the
right bulb for different needs in your home. http://energy.gov/publicservices/homes/saving-electricity/lighting
10.
This is what the new lighting labels look like. (Go over the 6 components)
11.
Energy-saving incandescent—or halogen—lamps are a type of incandescent lighting that
achieve better energy efficiency than standard incandescent A-type light bulbs.
 Halogen lamps have a gas filling and an inner coating that reflect heat. Together, the
filling and coating recycle heat to keep the filament hot with less electricity.
 These lamps provide excellent color rendition. They also are considerably more
expensive to buy than standard incandescent lamps, but they are less expensive to
operate because of their higher efficacy.
 Known as the screw-in "A"-type light bulb, standard incandescent lamps are the most
common—but most inefficient—light source available.
 These standard incandescent lamps produce light from a tiny coil of tungsten wire that
glows when it is heated by an electrical current.
 Larger-wattage incandescent bulbs have a higher efficacy than smaller-wattage bulbs.
However, a larger-wattage lamp or bulb may not be the most energy- or cost-effective
option, depending on how much light is needed.
 "Long-life" bulbs, with thicker filaments, are a variation of A-type bulbs. Although
these bulbs last longer than their counterparts, they are less energy efficient.
12.
Lighting Choices: CFL’s
13.
Lighting Choices: LED
14.
This Energy.gov website
(link on bottom of slide http://energy.gov/energysaver/articles/frequently-askedquestions-lighting-choices-save-you-money) is very helpful in answering questions about
lighting. Lets explore this site for a moment so you are familiar with the types of
resources you can find on this website.
(click on 2 or 3 of the questions on the website to give the participants an idea of the
resources available. Do not spend time reading the Q&As, just show that they are available
and useful.)
15.
Lets watch a video at Energy.gov that explains how to choose a new bulb and how the new
lighting options can save energy, saving YOU MONEY. (click on link below image or copy
and paste it into your browser).
http://www.energysavers.gov/your_home/lighting_daylighting/index.cfm/mytopic=11975/
16.
Warm vs. Cool—the Psychology of Light
 Warm and cool descriptions refer to the way color groups are perceived—the
psychological impact of lighting. Colors and light sources from the violet/blue end of
the spectrum are referred to as “cool,” and those toward the red/orange/yellow side
are “warm.”
17.
Color rendition is very important. Different light sources will make colors appear
differently. Incandescent lighting has been referred to as warm light. At one time,
fluorescent lamps were unpopular because they were seen as cold light. This has changed,
however, and fluorescent lamps are now available in many different shades of white. By
varying the phosphor blend, colors can be made to vary from warm to cool and several
steps in between, allowing one to select the best match for the use and physical
characteristics of a space. If a space has lots of reds, oranges, yellows, or woods, one would
choose a warm color; conversely, with lots of white, blues, grays, or metal, cool colors may
be preferable. An in-between neutral color is also available.
18.
Key Points
19.
Resources