Energy Efficiency and Renewable Energy Chapter 18 Living in the Environment, 14 th edition, G. Tyler Miller
- What is energy efficiency? Miller says we waste about 43% of our energy unnecessarily. - Why worry about it? -Do you consider energy conservation and/or efficiency in your house? “ Tired of heating or cooling an empty house while you're away? In about an hour, you can be on your way to a more comfortable home. Depending on the model you select, you can program day and night temperatures and even a setting for every day of the week. You'll be more comfortable with your heating and cooling bill too. Lowe's is happy to provide this information as a service to you.” http://www.lowes.com/lowes/lkn?action=howTo&p=Improve/ProgramThermostat.html
What’s a renewable energy source? What are some examples we can think of? http://rredc.nrel.gov/ http://en.wikipedia.org/wiki/Renewable_energy
Making our homes & offices more efficient
Sears tower consumes more energy in a day than a city of 150,000 people! (Miller)
Super insulation, plug leaks!
Use heat from the sun
Energy efficient windows
Landscaping, roof top gardens
Miller gives lots of other ideas in our text
The ING Bank in Netherlands, uses 92%
less energy than a conventional
building of its size http://www.rmi.org/images/PDFs/BuildingsLand/D92-21_NMBBankHQ.pdf
more on geothermal…. http://www.eia.doe.gov/cneaf/solar.renewables/page/geothermal/geothermal.gif
Low environmental impact; we’re tapping natural heat sources such as volcanic rock, geysers and hot springs.
Energy efficient and cost effective
1% of world’s electricity
Cost is high so source must be concentrated and accessible
Reservoirs can be depleted if heat is removed faster than resupplied .
Chevron graphic to see how geothermal works…. http://www.chevron.com/stories/#/stories/re_geo/geo_ov/?gclid=CNWv7LKYy48CFQM-IgodE0nX0w/ another animation http://www1.eere.energy.gov/geothermal/gpp_animation.html