Transcript Unit 11 Does China have enough power resources?

Unit 11 Does China have enough power resources?
Unit 11
Does China have enough
power resources?
Unit 11 Does China have enough power resources?
What are power resources?
Power resources are the materials from which we obtain the
energy for work. Coal, oil and natural gas are the examples.
Unit 11 Does China have enough power resources?
Different sources of power
In the past, ancestors depended on
their muscles and draught animals
as the sources of power for doing
work.
Unit 11 Does China have enough power resources?
Wind
Different sources of power
Electricity
Today we use fuels such as coal, oil and
natural gas to power our machines and
to generate electricity as shown in these
figure.
Petrol
Unit 11 Does China have enough power resources?
What are power resources?
Electricity is a
handy form of
energy.
It can be generated
by the burning of a
fuel such as coal or
oil.
It can be a mechanical
force such as strong
wind or running water.
Unit 11 Does China have enough power resources?
Where are the power resources in
our country?
Though China is not a
country rich in power
resources, its proven
reserves of coal and oil
are quite large.
In view of China's extensive river
network and mountainous terrain, there
is ample potential for the production of
hydroelectric power.
Coal reserves are about
13% and oil reserves
of China are about
21% of the world’s
total reserves.
Unit 11 Does China have enough power resources?
The story of coal
Sea
Sea
Millions of years ago, the climate was When the sea level rose, these forests
warm and wet. There were rich forests were covered with sea water. The plants
growing in many parts of the earth.
decayed and accumulated in swamps.
Unit 11 Does China have enough power resources?
The story of coal
other rocks
decayed plants
mud and sand
The decayed plants were covered by The land rose upwards when the sea
mud and sand. The weight of the level sank. Coal layers are exposed
rocks that formed above compressed
them into coal by driving out moisture, when rocks are folded and eroded.
so increasing the carbon content.
Unit 11 Does China have enough power resources?
Where are the power resources in
our country?
Most of the coal
reserves are found to
the north of the
Chang Jiang.
The largest
reserves are
located in
Shanxi
Province,
Nei Mongol
Zizhiqu and
Shaanxi.
Coal field in Enshu
In 1998 China produced 1.23
billion metric tons of coal, the
largest production in the world.
Coal-fired plant in Jiaxing
Unit 11 Does China have enough power resources?
Distribution of coalfields
N

Fuxin
Datong
Fushun
Kailuan
Huaibei
Huainan
Coalfields
km
Important
production
centres
Unit 11 Does China have enough power resources?
The story of oil
Millions of years ago a lot of living When they died, their bodies were
things lived in lakes and seas.
covered by sand and silt.
Unit 11 Does China have enough power resources?
The story of oil
gas
oil
bodies of living things
oil bearing
layer
(permeable
layer)
impermeable
Later their bodies were transformed Oil is stored in layers of rocks bent
into oil. It lies in the pores of rocks.
upwards. It is called an oil trap.
Unit 11 Does China have enough power resources?
Where are the power resources in
our country?
Oil is mainly found in the north-eastern
and north western provinces.
Daqing of
Heilungjiang is
the biggest
oilfield.
Oil refinery in Dalian
Oil rig in the South China Sea
Unit 11 Does China have enough power resources?
Distribution of oilfields and gasfields
Natural gas is often found
together with oil in many parts of
China.
N

Daqing
Karamay
Yumen
Lenghu
Dagang
Yanchang
Shengli
Nanchong
Oilfields
Miaoli
km
Gasfields
Unit 11 Does China have enough power resources?
Where are the power resources
in our country?
Hydro-electric power
China is rich in hydro-electric
power potential but only 10% of it
has been developed.
The greatest H.E.P. potential area
is in the south-west which is
mountainous and crossed by a large
number of fast flowing rivers.
Unit 11 Does China have enough power resources?
Different of H.E.P. potential and some H.E.P. stations
N

Liujiaxia
Sanmenxia
Gezhouba
H.E.P. stations
The size of circle is
proportional to the amount
of H.E.P. potential
km
Unit 11 Does China have enough power resources?
Where are the power resources in
our country?
Nuclear power
Nuclear power plants have
been developed in coastal
areas which place a great
demand on electricity.
Example:Daya Bay nuclear
power plant in Guangdong.
Daya Bay nuclear power plant
Unit 11 Does China have enough power resources?
Terms to learn
Power resources (能源)--the materials from which we obtain
the energy to do work.
Reserves of coal and oil (煤和石油蘊藏量)--coal and oil
buried underground that can be mined or exploited.
Hydro-electric power (H.E.P.) (水力發電)-- electricity
produced by fast flowing water.
H.E.P. potential (水力發電潛能)--amount of H.E.P. that has
not been developed. It may be developed in the future.
 Oil trap (油捕區)--layers of rock that hold oil underground
in the crust.