T URN OFF THE LIGHTS ? Melanie Derby and Emily Porter-Goff y y - - PowerPoint PPT Presentation

TURN OFF THE LIGHTS?

Melanie Derby and Emily Porter-Goff y y

http://www.lightbulbmarket.com/product/050260_60-Watt-A-19-Philips-Light-Bulb

Today “Buy” appliances Test energy usage

• f small appliances
• f small appliances

TIME TO PURCHASE TIME TO PURCHASE APPLIANCES BUY A DISHWASHER,

WASHING MACHINE HOT WASHING MACHINE, HOT WATER HEATER WATER HEATER, REFRIGERATOR, TOILET

$4500 BUDGET $4500 BUDGET

WATER USAGE AND COSTS

How many times toilet

fl h /d ? flushes/day per person?

How long does it take to How long does it take to

shower?

New York Water $1.50 for 1,000 gal

http://automobile.automotive.com/101292/0902-2009- ford-f150-lariat/nicely-tailored-cabin.html

Visualize 1 800 gallons fills a 6 5 ft 1,800 gallons fills a 6.5 ft

pickup truck bed

http://www.eia.doe.gov/electricity/epm/table5_6_a.html

ENERGY USAGE AND COSTS

kWh- unit of energy

gy

Amount of energy to run ten

100W light bulbs for one hour

New York Electricity $0.18/kWh

y

http://www.chinese- letter.com/learnimage/LightBulbIdeaHand/

KILL A WATT TM

Divide into six groups

g p

At each station Predict power usage of

li i W tt appliance in Watts

Measure power with

Wattmeter

What was surprising?

http://www.amazon.com/gp/customer-media/product- gallery/B00009MDBU/ref=cm_ciu_pdp_images_0?ie=UTF8&i ndex=0

IMPACT OF A LIGHT BULB- ONE 100W

LIGHT BULB ON FOR AN ENTIRE YEAR

One 100W light bulb

g

1 year= 365*24 hours= 8760 hours Coal-fired power plant- 40% of

thermal energy in coal converted to electricity

Requires 715 lbs of coal! Requires 715 lbs of coal! Also contributes: 1850 lbs of CO2 5 lbs SO2 5 lbs NOx

http://www.ilgp.org/Membe rs/timtacker/news/news_ite m.2005-10-09.4907886392 http://www.howstuffworks.com/question481.htm