elc presentation-energy resources

8/7/2019 Elc Presentation-Energy Resources

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Energ

y Resources

In China


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Energy? Power resources? Energy: important to daily life & economic growth

Power resources: sources of energyRenewable: renewed within a short period of time

Non-renewable: cannot be renewed after consumed &will run out one day

e.g. oil will be used up in 40 years time


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Examples

Non-renewable:

Fossil fuels: Coal, oil,natural gas

Non-fossil fuels:Nuclear power

R

enewable:Solar power,Wave power,Tidal power,Wind power,Geothermal power,Hydroelectric power


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Problem 1

Year Annual energy production by differentpower resources Total energyconsumption Difference betweentotal production andconsumptionCoal Oil Natural gas HEP Total

1980 442 152 19 24 637 603 34

1985 623 179 17 37 856 767 89

1990 771 198 21 50 1040 987 53

1995 972 214 25 80 1291 1312 -21

Source: China Statistical Yearbook 1989 and 2001

Table: Energy production and consumption in China(1980-2000) ( in million tonnes of coal equivalent)


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A line graph showing the trend of total energy production and consumptionsince 1980

Mi llio

ntonnesofcoaleuialent

Year


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Problem1: Production cannot catch up

with increasing demand for energy Cheap and stable supply of energy

healthy economic growth &

high standard of living

Try hard to be self-sufficient in energy Not able to keep up with increased demand for

energy


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Problem 2

What kind of power resource

is most commonly used?


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Problem2: Over-reliance on coal causes

environmental problems Cheap & abundantmajor power resource

Least environmentally friendly

e.g. pollutants: 40 times petroleum

800 times natural gas

Air pollution (smog, acid rain)

Global warming


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Problem3: Spatial mismatch between

energy production and consumption areas ajor energy production areas: the West and Central

ajor energy consumption centres: the East

(existence of special economic zones & open coastalcities)

mismatchto transport power resources from West to East

price of power &

burden on train trans ort network


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What is the challenge of Chinas

energy problems?To provide a cheap, timely and stable

supply of energy withoutsacrificing the environment.


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Nuclear energy how to produce nuclear energy


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Nuclear energy

erits:

-availability

-efficiency

-length

-green-cost

-safety


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Nuclear energy

Demerits

-technologies & experts

-safety

-nuclear weapons


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What is hydroelectric energy


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Advantages of using Hydroelectric power

Help solve drought problem(US) + Floodcontrol

On-demand consumption Emits less CO2

Enormous economic benefit


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Disadvantages of using Hydroelectric power

Global warming ( emission: methane)

Safety problems

Habitat destruction

Displacement of communities

X Earthquakes Energy generation Not guaranteed (low-level

of rainfall)


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What is wind energy?


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Wind Power in China

Between 2007 and 2012,

(Source: the Chinese Renewable Energy Industries Association report)


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Potential wind power generation

capacity Land-based wind resources= 253GW Ocean-based wind resources= 750GW

Green=great Pink=good Blue=ok Yellow=poor


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Advantages of wind power

renewable energy

less environmental impact

dont take much room

cost effective

suitable for generating energy in remotelocations


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Disadvantages of wind power

High initial cost

no wind = no energy

aesthetics

cause noise pollution

produce much less electricity (compared withfossil fuelled power station)

hit birds


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Overall


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Conclusion

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