"Energy Crisis and Hope" Particles and Universe PPT Courseware 3

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"Energy Crisis and Hope" Particles and Universe PPT Courseware 3

Discussion: What is humanity's initial use of energy now and in the future?

science and humanity

1. Solar heat storage (solar thermal energy)

2. Direct solar power generation: solar cells (solar energy)

1. Solar energy

solar power station

solar water heaters

solar lawn light

solar cooker

2. Wind energy

Wind energy, like sunlight, is an inexhaustible natural renewable energy source. The world's wind energy content reaches 100 trillion MW.1014 MW, of which 10 million MW can be used to generate electricity. MW�, in today's increasingly shortage of fuel, this energy cannot be ignored.

3. Geothermal energy

Geothermal energy is renewable heat energy that comes from deep within the earth. It originates from the earth's molten magma and the decay of radioactive materials.

The greatest utilization potential of geothermal energy lies in power generation. Geothermal energy is generally divided into five types: steam type, hot water type, geopressure type, dry hot rock type and magma type. At present, the total global geothermal power generation reaches nearly 8 million kilowatts. In addition to being used for power generation, geothermal energy is also used directly for heating, cooling, medical bathing, various forms of industrial and agricultural heat, and aquaculture. Geothermal energy has also been used in greenhouses, drying, refrigeration, breeding, etc. in various countries around the world.

science and humanity

The main advantages of hydrogen energy are: high combustion calorific value, the product of combustion is water, and it is the cleanest energy in the world. Rich in resources, hydrogen can be produced from water, and water is the most abundant resource on the earth. It illustrates the classic process of recycling and sustainable development of natural materials.

According to news from PhysOrg on October 24, 2005, an Israeli company called Engineeringuity recently invented a technical system that can produce hydrogen in cars, and only requires the use of ordinary metals such as magnesium and aluminum. This technology will completely solve all the difficulties associated with hydrogen production, transportation and storage for automobiles.

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For more information about the PPT courseware "Particles and the Universe Energy Crisis and Hope", please click the Particles and the Universe ppt Energy Crisis and Hope ppt tag.

"Energy Crisis and Hope" Particles and Universe PPT Courseware 4:

"Energy Crisis and Hope" Particles and Universe PPT Courseware 4 What forms of energy have we learned? Mechanical energy, light energy, internal energy, chemical energy, electrical energy. Question: Do students know what can be called energy in life? What is energy? Summary: Anything that can provide...

"Energy Crisis and Hope" Particles and Universe PPT Courseware 2:

"Energy Crisis and Hope" Particles and Universe PPT Courseware 2 The power generation principle of the Three Gorges Hydropower Station The generator rotates under the drive of the water turbine to generate electricity. The upstream water level increases and the potential energy of the water increases. The high water level water flows rapidly downward and pushes the water turbine to rotate. Electric energy is only in human life and life. .

"Energy Crisis and Hope" Particles and Universe PPT courseware:

"Energy Crisis and Hope" Particles and Universe PPT Courseware Teaching Objectives 1. Understand through examples that energy can be transferred from one object to another, and that different forms of energy can be converted into each other. 2. Have a preliminary understanding of the history of human discovery, development, and utilization of energy, and be able to...

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Update Time: 2024-11-22

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