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Farmer Bobs Problem

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Wants to be completely cut off from the utility company ... The fabric of the airship and stores of diesel fuel started the fire. ... – PowerPoint PPT presentation

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Title: Farmer Bobs Problem


1
Farmer Bobs Problem
  • Wind turbine suitable for his needs
  • Wants to be completely cut off from the utility
    company
  • Doesnt know where to place the wind turbine
  • Needs a way to store the excess energy
  • Wants to try and use excess energy in his cars or
    truck

2
Geographic and Seasonal Analysis
3
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7
Over-Production,Under-Production, Storage of
Energy
8
Production and Storage
  • Months with Over-Production
  • Months with Under-Production
  • Needed Storage for compensation of
    under-production

9
Two Days of Storage
  • Our storage device needs to be capable of holding
    at least 82kWh worth of energy
  • The device needs to produce 1.71kW every hour

10
Batteries
  • Batteries were less efficient
  • Need to be replaced often
  • Price of purchasing batteries would add up
  • Work like hydrogen, but less efficient

11
Flywheel
12
Advantages
  • Reliability
  • Simplicity
  • Safety
  • Ease of Maintenance

13
Disadvantages
  • Cost
  • Size
  • Functionality

14
Water Towers
  • Use of Gravitational Energy

15
Advantages/Disadvantages
  • Height vs. Amount of Water
  • Cost Disadvantage of Water Tower
  • Maintenance Advantage of Water Tower
  • Shear Size and Amount Needed

16
Hydrogen Safety

17
The Hindenburg
  • The fabric of the airship and stores of diesel
    fuel started the fire.
  • The hydrogen gas burned quickly and above the
    occupants.

18
Why is it safer
  • Hydrogen is less flammable than gasoline
  • Hydrogen combustion produces fewer harmful
    chemicals
  • Hydride tanks have a powder that prevents
    explosions

19
Storage tanks
  • Hydrogen tanks can withstand several tests
  • Bullets
  • High temperatures
  • Collisions

20
The Hydrogen System
21
Hydrogen System
  • Main components of the hydrogen system Storage
    Device, Electrolyzer, and the Fuel cell

Electrolyzer
Fuel Cell
Storage
22
The Electrolyzer
  • An electrolyzer is a device that uses a method of
    electrolysis to convert water into gaseous
    hydrogen.
  • Two main types of electrolyzers the Potassium
    Hydroxide (KOH) electrolyzer, and the Proton
    Exchange Membrane (PEM) electrolyzer.
  • The PEM electrolyzer was chosen for this project
    due to its ability to generate pure hydrogen from
    water at pressures around 200 psig or higher,
    therefore eliminating a need for a compressor.

23
Hydrogen Storage
  • 4 Solutions Considered
  • Liquid storage
  • Gaseous storage
  • Metal Hydrides
  • Carbon Nanotubes

24
Liquid Storage
  • Onsite storage system
  • Includes tank, vaporizer,
  • controls
  • Extremely cold temperatures
  • 20 K or -253oC
  • Specially Designed Equipment
  • 30 energy loss for cooling compressing process

25
Gaseous Storage
  • Cylinders
  • - Rare to find cylinders over 300 SCF
  • Highly compressed tanks
  • - Large Size
  • - Periodical testing for safety
  • - Requires energy to compress
  • - Expensive
  • Tube trailers
  • - Mobile, large quantities

26
Metal Hydrides
  • Made of combinations metallic alloy that act
    like a sponge soaking up water
  • Safely delivers hydrogen at constant pressure
  • New technology - available but at high costs

27
Carbon Nanotubes
  • Microscopic tubes of
  • carbon that store hydrogen
  • in microscopic pores
  • Like metal hydrides only can store larger
    amounts
  • Still in research development stage so
    considered as future option

28
The Basic Fuel Cell
http//inventors.about.com/library/inventors/blfue
lcells.htm
29
COSTS
30
Costs of Hydrogen Storage
Capital Storage Cost Per kWh
31
Hydrogen System Costs
Cost of a minimal maintenance electrolyzer to
generate 1.5 Nm3
Typical Costs for the storage of 100,000L / 297.5
kWh
Cylinder Oxarc Price Quote 22 cylinders- 3,382.50
Cost of minimal maintenance fuel cell system that
produces a max 2.6 kWh output
Fuel Cell FYD2000 - 14,250
Electrolyzer Hogen 40 series - 60,000
32
Wind Turbine Costs
33
Capital Cost Estimate Of The System
34
Hydrogen uses

35
Automobiles
  • Safer
  • Burns more efficiently than gasoline or natural
    gas
  • Fuel cells are very strong
  • Used in rockets, cars, and busses so far

36
other uses
  • Welding of several materials
  • Heating
  • Combustion engines
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