the need project: 30 years of energy education1 solar energy
TRANSCRIPT
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The NEED Project: 30 Years of Energy Education 1
Solar Energy
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Radiant Energy
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Average Daily Solar Insolation Per Month
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• Drying Agricultural Products• Heating Water• Space Heating• Generating Electrical Energy
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Major Uses of Solar Energy
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Solar Technologies
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oDaylightingo Passive Solar
HeatingoActive Solar
HeatingoConcentrating
Solar Thermalo Photovoltaics
(PV)
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Passive Solar
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Daylighting
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Active Solar Heating
Flat Plate Collector
Evacuated Tube Collector
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Concentrating Solar Power
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Power Tower
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How a Power Tower Works
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Photovoltaics
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PV Cell
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PV Array Component
s
oPV CellsoModulesoArrays
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True or True or False?False?
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Today’s PV Cells are less Today’s PV Cells are less than 20% efficient at than 20% efficient at
converting radiant energy converting radiant energy to Electrical energyto Electrical energy
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It’s True!It’s True!
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Conversion Efficiency
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PV System Components
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Residential PV Installation
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Source: Solarbuzz, a part of The NPD Group
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Advantages and Disadvantages
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oCleanoSustainableoFreeoProvide Electricity to Remote Places
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Advantages of Solar Energy
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Disadvantages of Solar Energy
oInefficient and costly equipment
oPart TimeoReliability Depends On
LocationoEnvironmental Impact of PV
Cell ProductionThe NEED Project: 30 Years of Energy Education 27
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