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The NEED Project: 30 Years of Energy Education 1
Solar Energy
Radiant Energy
The NEED Project: 30 Years of Energy Education 2
Average Daily Solar Insolation Per Month
The NEED Project: 30 Years of Energy Education 3
The NEED Project: 30 Years of Energy Education 4
• Drying Agricultural Products• Heating Water• Space Heating• Generating Electrical Energy
The NEED Project: 30 Years of Energy Education 5
Major Uses of Solar Energy
Solar Technologies
The NEED Project: 30 Years of Energy Education 6
oDaylightingo Passive Solar
HeatingoActive Solar
HeatingoConcentrating
Solar Thermalo Photovoltaics
(PV)
The NEED Project: 30 Years of Energy Education 7
Passive Solar
Daylighting
The NEED Project: 30 Years of Energy Education 8
9
Active Solar Heating
Flat Plate Collector
Evacuated Tube Collector
Concentrating Solar Power
The NEED Project: 30 Years of Energy Education 10
Power Tower
The NEED Project: 30 Years of Energy Education 11
How a Power Tower Works
The NEED Project: 30 Years of Energy Education 12
The NEED Project: 30 Years of Energy Education 13
Photovoltaics
The NEED Project: 30 Years of Energy Education 14
PV Cell
The NEED Project: 30 Years of Energy Education 15
PV Array Component
s
oPV CellsoModulesoArrays
The NEED Project: 30 Years of Energy Education 16
True or True or False?False?
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
It’s True!It’s True!
Conversion Efficiency
The NEED Project: 30 Years of Energy Education 20
PV System Components
The NEED Project: 30 Years of Energy Education 21
Residential PV Installation
The NEED Project: 30 Years of Energy Education 22
The NEED Project: 30 Years of Energy Education 23
Source: Solarbuzz, a part of The NPD Group
Advantages and Disadvantages
The NEED Project: 30 Years of Energy Education 25
oCleanoSustainableoFreeoProvide Electricity to Remote Places
The NEED Project: 30 Years of Energy Education 26
Advantages of Solar Energy
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
The NEED Project: 30 Years of Energy Education 28