Geol 3000 Conservation of Natural Resources Energy Conservation - PowerPoint PPT Presentation

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Geol 3000 Conservation of Natural Resources Energy Conservation

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Conservation in the energy business is known as Demand-Side Management (DSM) ... between conservation (anything that ... Energy conservation and recycling ... – PowerPoint PPT presentation

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Title: Geol 3000 Conservation of Natural Resources Energy Conservation


1
Geol 3000Conservation of Natural
ResourcesEnergyConservation
2
Demand-Side Management
  • Conservation in the energy business is known as
    Demand-Side Management (DSM)
  • On average, US studies in the mid-1990s showed
    that generating a Kwh of energy would cost around
    7 cents whereas saving one through DSM would cost
    around 2-4 cents.
  • To realize the significant social benefits that
    DSM would create, PUCs required monopolistic
    energy suppliers to implement conservation
    programs, allowing them to charge higher rates
    per unit sold so as to recover costs and maintain
    profit margins.

3
Conservation strategies
  • A. Arrange/modify the environment so less
    delivered energy (therms or Kwh) is required in
    the first place.
  • B. Use more energy-efficient devices to do the
    required work.
  • C. Change energy using behavior to eliminate
    wasteful and unnecessary usage.
  • Adopt a combination of the above to achieve
    combined savings (ABC)

4
ABC Example - Refrigeration
  • Homeowners can minimize refrigerator energy use
    by
  • A. Siting the refrigerator away from a heat
    source in a cooler space.
  • B. Purchasing a newer model refrigerator with a
    more efficient heat exchanger system, etc. (post
    golden-carrot technology).
  • C. Refraining from standing in front of the open
    refrigerator door for 10 mins thinking what to
    have for dinner!

5
You design a conservation plan with three
complimentary elements
  • Using the example of heating a family home,
    identify three complimentary elements by which
    energy use can be conserved..
  • A
  • B
  • C

6
Conservation and efficiency
  • Many experts like to distinguish between
    conservation (anything that decreases demand) and
    energy efficiency (efforts specifically designed
    to increase the usable output per unit of
    energy).
  • At the broadest level, electricity conservation
    is important since it is generally the least fuel
    efficient form.
  • The average American electric power company has
    an energy efficiency of around 30 (they lose 5
    units for every 2 delivered).

7
Electricity conservation
  • Conservation can occur at a variety of stages
  • using water or solar power rather than fossil
    fuels for generation.
  • reducing the need to keep thermal power stations
    for peak production (load shape mgmt.)
  • practicing cogeneration to recover waste heat.
  • minimising the need to transport electricity long
    distances.
  • improving the efficiency of transportation grids.
  • improving the efficiency of electrical devices.
  • substituting alternative fuels at the point of
    use.

8
US Energy Sectors
  • 37 of US energy use is in the industrial sector
  • 27 of US energy use is for transportation
  • 20 of US energy use is in the residential sector
  • 16 of US energy use is in the commercial sector
  • Tremendous gains are still to be made in
    lighting, heating and cooling efficiency and
    particularly in transportation.
  • For transportation, the dual issues of miles per
    gallon and gallons per passenger mile are
    important.

9
Energy conservation and recycling
  • When industrial users use recycled materials for
    production, energy use is reduced considerably.
  • Recycling steel from scrap rather than using iron
    ore uses 14 of the energy.
  • Recycling aluminum from old cans uses only 5 of
    the energy compared to using bauxite.
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