Energy Flashcards
(32 cards)
How long will gas last at current levels of consumption?
60yrs
How long will coal last at current levels of consumption?
200 years
How long will oil last at current levels of consumption?
40 years
Which areas have less of a problem with access to fossil fuels?
Northern Africa and Middle East as they have 70% of the worlds gas and oil supplies
Oil provides what proportion of world and Vietnamese supplies?
World- 37%
Vietnam- 17%
Coal provides what proportion of world and Vietnamese supplies?
World- 25%
Vietnam- 22%
Gas provides what proportion of world and Vietnamese supplies?
World- 23%
Vietnam- 11%
Biomass provides what proportion of world and Vietnamese supplies?
World- 4%
Vietnam- 51% (non commercial)
HEP provides what proportion of world and Vietnamese supplies?
World- 3%
Vietnam- 3%
Give figures for the recent fluctuation in oil prices
2008- $140/barrel
2009/10- $40 (recession+ increased supply
What is peak oil?
The point in time where the max rate of global petroleum extraction is reached, after which it enters terminal decline)
Why is coal not sustainable?
Finite (200yrs) Pollution when burnt CO2 released Socially- up to 3500 miners are killed each year in accidents in China Not very energy dense
Biomass potential of Vietnam?
Approximately 9000 GWh of electricity potential
Secondary resources are being used. E.g.
33/43 sugar factories are generating electricity from bagasse (sugar cane residue)
Give facts and concerns about the 3 Gorges Dam- China
- Worlds largest dam on Yangtze River
- over 1 mill people were displaced too land with infertile soil over 800m above sea level
- earthquakes may lead to seismic instability
- cost $70 billion
During the 20th century energy demand increased-
10 fold worldwide
Give 3 factors for increased energy consumption
- development-> car ownership
- globalised economy so goods and ppl transported by air and sea (food miles)
- manufacturing and construction industry growth
In Vietnam, electricity supply has
Increased from 3000GWh to 72000!
(24 times!) since 1975
China has passed USA to be the biggest consumer of energy but
Average American still burns 5times as much annually as the average Chinese citizen.
UK consumption fact?
Households spend £1.3 billion/year on powering consumer electronics
Why biofuel does Vietnam produce?
Biodiesel from catfish fat in the Mekong Delta
How does India use solar power?
Barefoot solar engineers are trained to assemble install and maintain solar tech in rural villages in Rajasthan. They serve 100 000 homes in over 100 villages
Example of leapfrogging
Pakistan’s Alternative Energy Board has launched solar systems for rural homes outside grid..
Household kits include solar panel, 2 LED lights, DC fan and TV socket
Biogas in India
Used instead of wood for cooking
NGO ASTRA helped develop and install 4 mill plants and provide 200 000 jobs in rural India