Alternative energy sources in the future (Part 2)

On the surface of the earth there is a huge source of heat that humans have not exploited and utilized, one of which is heat from volcanoes.

The researchers believe that people can use this abundant source of heat to generate electricity for activities in public places, such as lights on the streets. This is a source of clean, abundant energy and promises to be exploited in the near future.

Energy from wind

Compared with large-scale “windmill” fields, a small-scale wind power generation system can provide enough electricity for each household. The average mini windmill system can produce 1-10kw of electricity, enough to provide the amount of electricity for lighting and other electric devices in a house.

America is one of the countries using wind energy the largest in the world today. Windmills in the US provide about 18,000 megawatts of electricity to at least 5.4 million households living in the country. According to estimates of the US energy agency, by 2030, the windmills will provide an amount of electricity accounting for about a fifth of the electricity that the country uses. Currently in the world, many countries are focusing on exploiting this energy source. In addition to the US, Denmark is also a country that uses a large amount of wind power with 20% of the energy that its people currently use is supplied by windmill fields.

Solar

There are two ways in the world to collect solar energy: mirror systems that focus sunlight to heat water to create steam that drives generating turbines, and a second way to use solar panels is to convert heat energy into electricity. Both methods are currently being used and are very effective.

Nuclear energy

The developed countries in the world are currently using this type of energy mainly and in the future, nuclear energy will still be the number one priority for many countries in the world. In the US alone, this country is currently planning to build 100 new nuclear reactors to power one-fifth of the nation’s population.

The pros and cons of wind energy (Part 2)

The defect of wind energy

1. The biggest drawback to wind power is that it is discontinuous. Electricity can be produced and provided adequately when the wind is strong enough, there are times when the wind settles, producing electricity by wind power is impossible. Efforts have been made to store wind energy successfully and use it in conjunction with other forms of energy, however, to make this source of energy a major source of energy in the near future, This needs to be quicker and more spacious.

2. Due to the intermittent nature of wind energy, it needs to be stored or additional ordinary energy sources must be used. However, its storage costs a lot of money and countries have to use fossil fuel plants to meet their energy needs.

3. There have been previous reports of the dangers posed by windmills to birds. Because of the considerable height of windmills, it often causes collisions with flying birds, and a large number of birds die for this reason.

4. Windmill installation faces severe opposition from people living in a neighborhood where wind power plants were planned to be built. Factors such as the speed of the wind and its frequency are taken into account before choosing where to install a windmill and sometimes locals strongly oppose the plan. One of the main reasons for their opposition is that windmills will cause noise pollution.

In addition, some argue that wind turbines adversely affect the aesthetics of a city and the tourism industry in their area.

We have just shared some advantages and disadvantages of wind energy. Wind power is undoubtedly one of the future sources of energy, but it is important that governments around the world need to allocate resources to improve existing technologies. While wind energy has its drawbacks, we have no reason to forsake this renewable source of clean energy and hinder efforts to realize its full potential.

Little known things about wind energy

Wind is abundant, green and clean energy for the environment. For centuries, people have known how to take advantage of the wind to produce and generate electricity.

However, there are some interesting things that we may not know about this type of energy.

1. Wind is one of the oldest forms of energy

From 5,000 BC, the effects of wind have been known in sailing. Sailors were the first to find an easier way to navigate the sea, laying the groundwork for human understanding of important concepts like dynamics and lift. Starting with the winged mill, these principles became the key to the next innovation, opening the revolution to automating time-consuming activities in agriculture.

Practical applications of wind were also found in the ninth century in Iran (as described by Abu Ishaq al-Istakhri). It is also a large form of pinwheels with propellers with a cloth-covered structure and a transmission system with ropes, pulleys used to move large stones in construction or to transfer water from lower to higher. Rough engines in pinwheel formations in India and Iran have vertical rotating shafts, and horizontal rotating discs.

2. MW of wind energy reduces 2,600 tons of CO2

According to information from the US Renewable Energy Laboratory (NREL), wind power is of interest because 1MW of wind power produced will help reduce about 2,600 tons of CO2 emissions into the environment. The fact that the less fossil fuel is consumed, the less CO2 it emits and the lower its CO2 emissions, which is now the standard for monitoring the progress of adopting alternative forms of energy.

A typical example is in Massachusetts (USA), in 2004, on average each citizen of this state emitted 4.5 tons of CO2 from using electricity. Meanwhile, only 1 MW of wind power can supply about 400 houses without emitting any CO2. Besides reducing CO2 emissions, wind power also brings more benefits than hydroelectricity, 1MW of wind power will save about 1,293 million liters of water.

3. Actual wind energy is solar

The source of this endless green energy is from the sun. Sunlight warms our planet, but because the Earth is constantly moving, the surface of the Earth is not even, making the temperature different from place to place.

The difference in temperature causes abnormalities in atmospheric pressure; gas molecules will move from the high pressure area to the low pressure area, forming the wind. The intensity, blowing time and wind direction are influenced by a number of factors such as weather, vegetation, water surface and topography.

All of these volatile factors make the wind unpredictable and become one of the reasons for the concern that wind is never stable enough to provide for human energy needs. The most predictable winds blow around the coast, increasing the cost of building wind farms.

4. Wind power does not pose a threat to birds

One of the main concerns of the opposition to wind power is the danger of wind turbines to wildlife, especially birds. However, despite its enormous size and dangerous speed, the wind turbines do not affect the wildlife, or flight paths of birds. Research by the National Academy of Sciences in the United States confirmed that the number of birds killed by wind farms accounts for only a negligible proportion of the total number of birds killed by humans.

5. World wind power output increased 4 times from 2000 to 2006

Wind power output increased rapidly from 2000 to 2006. Even in the year of global economic downturn in 2009, the wind power industry still developed strongly. This year alone, world wind power production has increased to 158,000 MW. Wind power is now able to meet the electricity needs of 250 million people and more than 70 countries already have wind farms.

According to a UN report, switching from fossil fuels to renewable energy (not just wind) requires more than $ 12 trillion. This commitment is not easy to implement in the next two decades, especially when traditional materials are still relatively cheap. Therefore, to maintain growth from 2000 to 2006, governments need more incentives to encourage wind power development.

The pros and cons of wind energy (Part 1)

All renewable energy sources are generated by heat generated by solar radiation. Wind is also a phenomenon caused by global warming of the atmosphere.

Sunlight on the surface of the earth unevenly makes the atmosphere, water and air unevenly heated. As a result, the hot air will move up, the cold air will go down. The change in position between hot air and cold air will form wind.

Tiềm năng phát triển điện gió

Wind is a renewable source of energy and its use does not produce toxic substances such as fossil fuels. This is one of the most effective forms of energy, it can become one of the main energy sources for future generations. Although wind energy has many advantages, it also has its own limitations.

Part 1: Advantages

1. Wind energy is a renewable energy source, while coal and wood are non-renewable energy sources. One thing is certain, wind energy will always exist. If greater efforts are made to bring wind energy into exploitation, it will reduce the use of non-renewable sources, which exploiting these sources will adversely affect the next generation.

Ưu điểm của năng lượng gió đối với người sử dụng | luster.vn

2. Global warming is one of the biggest challenges for all humanity. According to published reports on this issue, an urgent need is to reduce emissions of pollutants in the Earth’s atmosphere. Wind energy is a great alternative to our energy needs, because it is not as polluting as large as fossil fuels.

3. A large area of ​​land may need to be cleared to build a power plant. But with a wind power plant, you only need a small area to build. After installing turbines, the area can still be used for farming or other agricultural activities.

4. One of the biggest advantages of wind energy compared to other renewable energy sources is the cost effectiveness. There are no costs associated with buying and transporting fuel into wind turbines, such as coal-fired power plants. In addition, with advances in technology, wind power will become cheaper, thereby reducing the amount of capital that countries have to spend to meet energy needs.

5. Developing countries lack the infrastructure necessary to build a power plant, which could benefit from this source of energy. The cost of installing a wind turbine is lower than that of a coal power plant, countries that do not have a lot of funding, can choose to use the option with high cost efficiency while still meeting the power demand.

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