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Category: Physics
What is the Renewable Energy Portfolio Standard in your state? What tax incentives are allowed with respect to the use or installation of renewable technologies?
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Category: Physics
Many descriptions of solar ovens are available on the Web. Sketch two such models, and describe the differences in their operation, noting physics principles.
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Category: Physics
What institutional barriers exist to the expansion of solar energy technologies?
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Category: Physics
One scheme for the storage of solar energy uses eutectic salts. These salts undergo a change in state from solid to liquid at temperatures around 100^{\circ} \mathrm{F}100∘F. When they melt, they will absorb energy with no change in temperature. On return to the solid state, energy is liberated. Compare this situation to the use of ice cubes in a d...
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Category: Physics
Solar energy can be stored by raising the temperature of water or rocks. A storage system will lose its stored energy by heat losses from the holding tank to the outside air. Even though water is a poor conductor of heat, the circulation of the warmer water to the top and colder water to the bottom will transfer heat within the tank. With this back...
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