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E&S:Lecture 8
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Blackbody
An object that emits (or absorbs) the maximum possible number of photons at all wavelengths
Thermal diffusion
Heat flows through materials
Low conductivity materials_________conductive heat flow
reduce
Passive solar heating
-sunlight enters home
-accounts for 30% of the energy usage in a typical home
Active solar heating
1. use pumps or fans to move solar-heated fluids from solar collectors
Solar Thermal Power
1. use large arrays of mirrors to concentrate solar energy to achieve high temperatures
Ocean Thermal energy conversion
1.attempts to exploit the ~20 degree difference in temperature between surface and deep ocean water in the tropics
2. uses conventional thermal power plant technology to generate electricity
Benefits of geothermal power
1. Cost effective
2. reliable
3. Sustainable
Downsides of geothermal power
1. Large capital investment
2. release greenhouse gases
Author
dante01
ID
154365
Card Set
E&S:Lecture 8
Description
study
Updated
2012-05-17T07:13:51Z
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