Energy

1
Energy

• Lecture 9

2
Which world do we want or deserve?
Photos courtesy of NASA (top) and BBC (bottom)
3
There is an international scientific consensus
that increasing levels of man-made greenhouse
gases are leading to global climate
change.Explore this issue with the aid of recent
news statements, web casts and Royal Society
reports.

• http//www.royalsoc.ac.uk/ (1)

4
UK viewpoint 1

• We are experiencing
• Changes in animal and plant life.
• Increases in temperatures in summer and it is
  milder in winter.
• Extreme and unpredictable weather conditions.
• We may soon be experiencing
• Deterioration in soil quality and water
  shortages, which will have a serious effect for
  our farms.
• Greater risk of tropical disease - malaria may
  return to Southern England after 300 years.
• Changes in the Gulf Stream.

5
UK viewpoint 2

• The Department of Trade and Industry estimates
  that weather related economic losses in the UK
  have increased over 10 fold in the last 40 years.
  http//www.dti.gov.uk/ (2)
• By the 2050s sea levels will increase by 14-18cm
  and by the 2080s by 23-36 cm
• Water rationing for irrigation will become
  increasingly frequent http//www.nationaltrust.org
  .uk/main/ (3)
• We all can make a difference by taking energy
  efficient measures in our homes (and on our
  roads) now www.est.org.uk (4)

6
Energy the environment

• Almost all our energy comes from burning fossil
  fuels, which releases harmful gases that change
  our climate.
• By being energy efficient we can reduce our
  energy needs and reduce our contribution to
  climate change. There are many ways we can do
  this, but your contribution will make
  a difference. We have provided a useful list of
  cheap and simple steps with a 10 point energy
  plan to help you to address the small changes you
  can execute www.est.org.uk (4)
• Adopt a low carbon lifestyle
• By following the 'Low-carbon Lifestyle Guide', we
  can all reduce the environmental impact of our
  homes and often save money in the process.
• http//www.cat.org.uk/carbongym/ (5)
• DO YOU KNOW THE SIZE OF
• YOUR CARBON FOOTPRINT?

7
Saving the environment and saving money

• Wasted money!
• A PC left on overnight costs 60 /year
• A PC left on standby overnight costs 25 / year.
• A TV left on standby overnight costs 12 / year.
• Take a moment to thinkswitch it off!
• Saving money!
• Fitting an energy saving light bulb can
• save up to 7 a year on electricity!

8
Renewable resources?

• Renewable energy is energy that is derived from
  an inexhaustible sources such as wind, sun, sea
  or replaceable sources such as waste products and
  crops
• Wind Solar Ground source heat pumps
• Small Scale Wind Small Scale Hydro
  Biomass

For further information see http//www.renewable-r
esources.com (6)
9
External References

• The Royal Society (No date). Home Page. Available
  at http//www.royalsoc.ac.uk/ Accessed 30/09/05.
• DTI (2005). Home Page. Available at
  http//www.dti.gov.uk/ Accessed 30/09/05.
• The National Trust (2005). Home Page. Available
  at http//www.nationaltrust.org.uk/main/ Accessed
  30/09/05.
• Energy Saving Trust (2005). Home Page. Available
  at http//www.est.org.uk/ Accessed 30/09/05.
• CAT (No date). Carbon Gym. Available at
  http//www.cat.org.uk/carbongym/ Accessed
  30/09/05.
• Dulas (2005). Home Page. Available at
  http//www.cat.org.uk/carbongym/ Accessed
  30/09/05