Energy Storage by Compressed Air

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Energy Storage by Compressed Air

• D.J. Lehr
• Josh Bittle
• John Yarrish

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Johns good at a lot of things. Professor
Fullerton

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Project Objective

• Deliver the maximum amount of electrical energy
  to an electrical motor using energy generated and
  stored during 15 minutes of sunlight on a 120 W
  solar panel.
• We do not expect to get full efficiency from the
  solar panel so we based our calculations on
  obtaining about 80 W from the panels.
• E P t
• E 80W (15mins 60 sec)
• E 72,000 Joules

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Why Compressed Air?

• Tremendously large potential energy storage per
  unit volume
• E p V - energy is directly proportional to
  pressure
• Simple, effective method
• Inexpensive design

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Compressed Air The Plan

• The energy generated from the solar panel will be
  used to power the air compressor.
• This compressor will fill a 30 gallon air tank
  which will serve as our energy storage device.

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The Plan cont.

• Using the air stored in the tank, we will release
  it across a turbine that will cause the turbine
  to rotate the alternator and thus generate power.
• The power will then be converted to electrical
  energy and will be used to operate a motor.

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Final Plan
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Materials

• Air compressor
• Air Tank
• Fan / Turbine
• Fan Housing
• Alternator
• Solar Panel - provided

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Air Compressor
Runs off of 12 V Flow Rate 35 L / min 100 psi
output Low energy consumption
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Air Tank
30 Gallon vertical air receiver 38 7/8 in.
tall 16 in. outside diameter 28 3/8 in. long
sides
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Why a 30 gallon tank?

• To calculate the size of the tank, an ideal
  pressure needed to be chosen. Using 90psi(p) as
  the pressure goal and Energy Stored(W), the
  volume(V) of the air tank can be found by

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Fan / Turbine

• Blow air across turbine
• Alternator will be hooked to this to receive the
  energy

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Alternator

• High output at low RPM
• Easily connected to turbine
• Small, low friction

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Budget
Air Compressor 49.00 Air Tank 178.60 Fan
/ Turbine 40.00 Fan Housing
40.00 Alternator Magnets 30.00
Wire (24 gauge) 35.00 Miscellaneous
15.00 TOTAL 387.60
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Why Should You Vote For Us???

• Our project uses proven technology
• Its simple to build and operate
• The storage potential is extremely long term.
• Time and Friction have Minimal effect
• The Bottom Line is Vote for our projectits the
  BEST solution