Lighting 2

12/05/06

-Next we have to find the total energy use of the light bulbs. To do this we take the power requirements for each room times
the life cycle of the fluorescent bulb(10,000 hours) and then convert the answer which you get in watts into kWh by dividing
by 1000.
    Incandescent:                                                                     Example: 600watt x 10,000hrs
    Living Room: 6,000 kWh                                                                     --------------------------- = 6,000 kWh
    Kitchen: 6,000 kWh                                                                                      1,000
    Stove: 1,800 kWh
    Dinning Room: 6,000 kWh
    Hall Way: 1,200 kWh
    Sink: 1,500 kWh
    Bedroom(13x19):   4,500 kWh
    Bedroom(14x19):   6,000 kWh
    Bathroom: 9,000 kWh

    Fluorescent:
    Living Room: 580 kWh
    Kitchen: 440 kWh
    Stove: 80 kWh
    Dinning Room: 440 kWh
    Hall Way: 80 kWh
    Sink: 160 kWh
    Bedroom(13x19):   400 kWh
    Bedroom(14x19):   400 kWh
    Bathroom: 800 kWh

-Next we are to figure out the cost of energy for each room in the house. To do this we take the total energy which we just
calculated and times that by the cost of energy($0.08 per kWh).
     Incandescent:                                                                      Example: 6,000 kWh x $0.08= $480
     Living Room: $480
     Kitchen: $480
     Stove: $144
     Dinning Room: $480
     Hall Way: $96
     Sink: $120
     Bedroom(13x19): $360
     Bedroom(14x19): $480
     Bathroom: $720

     Fluorescent:
     Living Room: $46.40
     Kitchen: $35.20
     Stove: $6.40
     Dinning Room: $35.20
     Hall Way: $6.40
     Sink: $12.80
     Bedroom(13x19): $32
     Bedroom(14x19): $32
     Bathroom: $64

-Next we are going to do a cost comparison for the incandescent light bulbs and fluorescent light bulbs in each room. To do
this we take the cost of energy which we just figured out above and add that to the cost of the light bulbs which we found
back in part 1.
     Incandescent:                                                                    Example: $480+$9.60= $489.60
     Living Room: $489.60
     Kitchen: $489.60
     Stove: $157.44
     Dinning Room: $489.60
     Hall Way: $104.96
     Sink: $122.40
     Bedroom(13x19): $367.20
     Bedroom(14x19): $489.60
     Bathroom: $734.40

     Fluorescent:
     Living Room: $63.27
     Kitchen: $51.30
     Stove: $30.88
     Dinning Room: $51.30
     Hall Way: $18.64
     Sink: $37.28
     Bedroom(13x19): $41.98
     Bedroom(14x19): $41.98
     Bathroom: $83.96

Questions to Answer:

-Which lighting scheme is more economical? As you can see by how much cheaper it is to use Fluorescent
lighting, it is the obvious choice to which one is more economical.

-What is the total energy saved by the more economical scheme compared to the other scheme over the
lifetime* of the fluorescent light? To answer this question we go back and take the Total energy use of the
Incandescent bulbs in all the rooms which is 42,000 kWh and subtract the Total energy use from the fluorescent
light bulbs in all the rooms which is 3,380 kWh. This gives you 38,620 kWh

-How much money will be saved by using the more economical lighting scheme over the lifetime* of the
fluorescent light? To find this we take the amount of money it costs for Incandescent light bulbs for each room
and subtract the cost of Fluorescent light bulbs for each room. After doing this we add up all of the sums to get
a total of $3,024.21.

-What are the environmental consequences (in terms of emissions) of choosing energy efficient lighting for your
apartment? We will be saving 99 pounds of CO2, 1 pound of S02, and 2 milligrams of Hg(mercury). To figure
this out i used the website:
-http://www.cleanerandgreener.org/resources/emission_reductions.htm

I hope that this was some help in making it more clear how to make
your home more energy efficient and how to save you money!

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This site was last updated 12/05/06