Hidroelektrik,geotermal enerji mənbələriTopics

1. importance of alternative energy sources combating climate change: energy production accounts for ~75% of global greenhouse gases. solar, wind, hydro and geothermal energy minimize carbon emissions. energy security: 80% of the world's population depends on imported fossil fuels. renewable energy relies on local resources and reduces geopolitical risks. economic benefit: 16.6 million clean energy jobs in 2025. every $1 invested in renewable energy creates 3 times more jobs than fossil fuels. financial advantage: solar and wind energy are already 40–50% cheaper than fossil fuels.

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Economic advantages long-term savings: although the initial construction costs of solar and wind farms are high, the operating costs are minimal. fossil fuels have a constant fuel cost. price stability: price fluctuations in oil and gas markets pose a risk, while renewable energy is stable because it relies on local resources. new jobs: millions of jobs are being created in solar panels, wind turbines and bioenergy. energy independence: dependence on imports decreases, national economy strengthens. 2. environmental benefits reduced carbon emissions: solar, wind, hydro and bioenergy minimize co₂ emissions. clean air and water: so₂, noₓ and particulates from burning fossil fuels are reduced. waste management: biogas and biomass enable the conversion of agricultural and domestic waste into energy production. protecting ecosystems: combating climate change, less damage to land and water resources.

The sun is the main source of energy on earth. as a result of thermonuclear reactions in its core, hydrogen turns into helium, and at this time, a huge amount of energy is released. solar radiation reaches the earth in the form of electromagnetic waves: ultraviolet, visible light and infrared rays. solar energy is the main driver of natural processes such as photosynthesis, climate cycles, wind and water cycle.

Measure the amount of solar radiation in the area and analyze the average annual indicators. use solar radiation maps record annual sunshine hours determine the season with the most sunny days

The right area is selected so that the collector receives maximum solar radiation. choose an area with high solar radiation avoid obstacles that create shadows orient the panels to the south

Concentrator solar collectors collect the sun's rays in a small area through mirrors and lenses, allowing for high temperatures. this technology provides higher heat and efficiency than conventional solar collectors. proper installation and use of these devices is important for hot water production.

Solar energy is widely used not only in electricity production, but also in heating and air conditioning systems, as well as in water desalination. these processes are both environmentally friendly and economical.

Heating and cooling systems are powered by solar energy. heating and air conditioning systems of buildings are supported through solar collectors. 2. desalination of salt water

Solar energy is directly converted into electricity through photovoltaic (pv) technologies. this process occurs when sunlight excites electrons in semiconductor materials, creating an electric current.

The beginning of the ditch: thousands of years ago, windmills were used to grind grain and draw water. mechanical age: in the 19th century, wind turbines became widespread for water pumps and mechanical devices in agriculture. electric age: from the 20th century, wind turbines focused on the production of electricity. modern stage: in the 21st century, onshore and offshore wind farms play an important role in the global energy mix.

The beginning of the ditch: thousands of years ago, windmills were used to grind grain and draw water. mechanical age: in the 19th century, wind turbines became widespread for water pumps and mechanical devices in agriculture. electric age: from the 20th century, wind turbines focused on the production of electricity. modern stage: in the 21st century, onshore and offshore wind farms play an important role in the global energy mix.

Environmental aspects wind energy reduces carbon emissions and minimizes air and water pollution. impact on land and water resources is low, but bird migration and landscape aesthetics should be considered when siting turbines. it plays an important role in the fight against climate change.

Environmental aspects wind energy reduces carbon emissions and minimizes air and water pollution. impact on land and water resources is low, but bird migration and landscape aesthetics should be considered when siting turbines. it plays an important role in the fight against climate change.

The principle of wind energy conversion the kinetic energy of the wind rotates the turbine blades. rotation is converted into mechanical energy and electrical energy is obtained through a generator. main components: turbine blades, shaft, generator, control system and transmission network.

Magma and hot water layers deep in the earth's crust are the source of heat. hot water and steam are brought to the surface through wells. it is a sustainable and stable source of energy, independent of climate.

Sti water and steam are brought to the surface through wells. turbines convert the mechanical energy of steam into electrical energy. technologies used: dry steam plants, flash steam plants, binary cycle plants.

Oceans have great energy potential: waves, buoyancy, currents and temperature differences. these resources are considered renewable and sustainable energy sources. mainly mechanical devices (turbines, wave generators) are used for energy production.

There is a temperature difference between surface and deep water in the oceans. using this difference, ocean thermal energy conversion (otec) systems generate electricity. hot surface water is evaporated, condensed with cold deep water and turbines are operated.

Electricity is produced using the potential and kinetic energy of water flows. hydroelectric stations are built on rivers and reservoirs. traditional hydropower is a renewable and environmentally friendly source of energy.

Liquid biofuels main types: bioethanol (from sugar crops), biodiesel (from vegetable oils and animal fats). it is used as an alternative to gasoline and diesel fuels in transport. it reduces carbon emissions and strengthens energy independence.

General information about fuel cells fuel cells are electrochemical devices that convert chemical energy directly into electrical energy. hydrogen, methanol and other fuels are mainly used. unlike batteries, they work with a continuous supply of fuel and oxidizing agent.

Use of fuel cells in transport (hydrogen-powered cars, buses, trains). in the production of electricity (stationary power sources, backup power systems). in household and portable devices (power source for notebooks, phones).

Obtaining hydrogen water electrolysis: hydrogen and oxygen are obtained as a result of the splitting of water using an electric current. steam reforming of natural gas: the most common method, but produces carbon emissions. production of hydrogen from biomass: ecologically clean hydrogen is obtained by decomposition of organic matter. photocatalytic methods: water splitting with sunlight, a promising technology for the future.