Several energy-efficient solutions (Part 3)

     13. When you can buy a new car, choose a gas-saving type. Instead of going to consume 1 gallon of gas that only goes 30km, if your car goes 64km with the same amount of gas consumption and you travel 16,000km per year, you will reduce about 7,000kg CO2 emissions.

     14. Reduce the amount of domestic waste. The way is to minimize the use of pre-packaged products or you can use products that are reusable and recyclable. Cutting or recycling each kilogram of waste to the environment will save energy and reduce at least 0.5kg of CO2 emissions.

     15. Recycle the refrigerant of the vehicle’s air conditioning system. In the United States, leaks from car air-conditioning systems are the main cause of CFC emissions, a substance that pores the ozone layer and causes the warming effect of the earth.

16. Insulation for walls and roof. This reduces energy costs by 20% to 30% and reduces CO2 emissions from 300 kg to 2500 kg per year.

     17. Modernizing the window system. Replace the traditional door with double-layer glass doors, between two layers of glass with argon gas. Using this type of glass door can reduce 2.4 tons of CO2 annually for gas-heated apartments, 3.9 tons for oil heating and 9.8 tons for electric heating.

     18. Plant trees and light-colored walls. If you live in hot climates or painted in dark colors if you live in a cold climate. Reducing energy consumption by utilizing shade from the right paint colors can help you reduce up to 2.4 tons of CO2 per year.

     19. Install energy efficient equipment and implement energy saving and minimizing measures in the workplace. Establish or join local associations and groups and work with authorities to implement these measures in schools and public buildings

     20. Contact local and national environmental authorities to get your opinion on economical and efficient use of energy as well as environmental issues.

Several energy-efficient solutions (Part 2)

     6. Don’t overdo the heater and air conditioner. A 2 degree reduction in the heater in winter will help reduce 6% of CO2 emissions, equivalent to 191 kg of CO2.

7. Regularly clean and replace the filter. Energy is lost when air conditioners and heaters have to work “harder” to draw air through a dusty filter. Cleaning the filter will save 5% of energy and reduce 80kg of CO2 emissions.

     8. Use energy-saving compact bulbs for the best light efficiency. Although the initial investment cost is higher than conventional bulbs, compact bulbs in the long run will be more economical because they only use of the electricity and have a lifespan of 8-12 times longer than conventional bulbs. provides equivalent brightness. When lighting a normal bulb, only 10% of the electricity is used to light up and the remaining 90% of the electricity is only used to make the bulb heat up.

     9. Insulate your hot water heating system at a cost of only $ 10- $ 20 but will save 450 kg of gas for hot water heating

     10. Install a nozzle to reduce water flow to limit hot water use. It costs about $ 10- $ 20 but annually reduces about 650 kg of CO2 emissions and saves 200 kg of gas.

     11. Self-conditioning indoor / apartment. Seal up air leaks on windows or doors. This costs only about $ 1 per window and will reduce 2,500kg of CO2 emissions. Ask your supplier to do an energy audit to see if your home is energy efficient or not. This service can be either free or for a very small cost. Make sure they check your home heating and air conditioning system as well.

     12. Walk, bike, carpool or use public transport whenever possible. For example, if your car travels 30 km and consumes 1 gallon of gasoline, each year you reduce 3200km of travel will reduce 4000kg CO2 per year.

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.


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.

Alternative energy sources in the future (Part 1)

Faced with the danger that limited fossil energy resources on the earth are gradually running out, new energy sources have been gradually being more interested by scientists and people. They are considered to be important energy sources in the future.

Faced with the danger that limited fossil energy resources on the earth are gradually running out, new energy sources have been gradually being more interested by scientists and people. They are considered to be important energy sources in the future.

Generating electricity from steam on the sea surface

There is a natural phenomenon that occurs frequently in the ocean: when the sun’s rays hit the water, the water on the surface begins to heat up and evaporate. Taking advantage of this phenomenon, scientists have come up with the idea of ​​producing electricity from this phenomenon. The project is called OTEC (ocean thermal energy conversion – converting energy from water vapor in the ocean).

Accordingly, people will take advantage of the water heated by the sun on the surface of the sea to heat ammonia gases and liquids with low boiling point. The purpose of this work is to create a stream of gas that pushes the turbines to spin to produce electricity. The gas is then cooled by seawater and reused again. This process goes on continuously, causing the turbines to continuously work to produce electricity.

According to scientists, this is an extremely abundant source of electricity. With less than 1/10 of 1% of the solar energy absorbed in the ocean, it could produce 20 times more electricity than it needs to supply the US needs in a day. . The only problem is that the cost of building such structures at sea is not small.

Energy from hydrogen gas

To create this energy source, it is necessary to arrange the hydrogen compartments in liquid form and the duct for this hydrogen gas to react with oxygen gas to form a stream of electrons that rotates the electric motor. This energy source is mainly used to operate environmentally friendly cars. The only waste this new energy generation technology produces is water (the result of a combination of hydrogen and oxygen).

Generates energy from ocean waves

To do this, the scientists used a hydrodynamic device that resembles the shape of a windmill operating in water. When water from rivers or waves at sea hits the device, it spins turbines and generates electric current. In principle, the system works and generates electricity exactly like the windmills. Scientists evaluate this is an extremely abundant source of energy that humanity can utilize, and at the same time can help the earth reduce the impact of the greenhouse effect.

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.

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 |

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.

Different Sources of Alternative Energy (part 3)


  1. Biofuels

Contrasting to biomass energy sources, biofuels make use of plant and animal life to create energy. They are fuels which can be obtained from some form of organic matter. They are renewable if plants are used because these can be regrown on a yearly basis. However, they require dedicated machinery for extraction, contributing to increased emissions even if biofuels themselves don’t. Biofuels are being adopted more and more, particularly in the United States.

  1. Wave Energy 

Once again, water proves itself to be a valuable contributor to alternative energy sources with wave energy converters. They hold an advantage over tidal energy sources as they can be placed in the ocean in different situations and locations. It has enormous potential when used properly and is more reliable than many other forms of alternative energy. However, the cost of these systems is a major factor to slow uptake.

  1. Hydroelectric Energy

Hydroelectric methods are among the earliest means of creating energy, although their use has declined with the rise of fossil fuels. However, they still account for about seven percent of the energy produced in the United States.

Hydroelectric energy brings a number of benefits. It is also a renewable energy source that doesn’t create pollution. Moreover, it offers some secondary benefits which are not immediately apparent. Generating hydroelectric power also uses the dams that contribute to flood control and irrigation techniques.

  1. Solar Power

Ssolar power is an typical example of alternative energy sources. After having been evolved massively over the years, it is now used for large-scale power generation and energy production for single homes. Many countries have introduced initiatives to promote solar power. Solar power source is totally renewable and the costs of installation are outweighed by the money that is saved in bills from traditional suppliers.

However, solar cells are prone to deterioration over long periods of time and are not so effective in unideal weather conditions.

Different Sources of Alternative Energy (part 2)

  1. Biomass Energy

Biomass energy comes in various forms. Burning wood has been used to create heat for thousands of years, but recent advancements have also seen waste.

The generated heat of burning wood can be the same as that of a central heating system. Moreover, the involved costs tend to be lower and the amount of released carbon by this kind of fuel is lower than the amount released by fossil fuels.

However, there are some issues that you need to consider installing these systems in your home, including maintenance and permission from a local authority.

  1. Wind Energy

Wind energy has become more and more popular in recent years. It offers some benefits that are the same as many other alternative fuel sources. For example, it generates no waste and makes use of a renewable source.

Wind energy installs power in about twenty million houses in the United States each year and this number is growing. Nowadays, most states in the US have some form of wind energy set-up that continues to grow.

Unfortunately, this energy generation form also presents some challenges, including wind turbines restricting views and being dangerous to some forms of wildlife.

  1. Geothermal Power

Basically, geothermal power means extracting energy from the ground around us. Nowadays, it is growing more and more popular. The World Bank estimates that about 40 countries can almost meet their power demands using geothermal power.

This power source does little to disrupt the land and has massive potential. However, due to its high costs, there is slower adoption of  geothermal power plants than expected for a fuel source with so much promise.

  1. Natural Gas

Although natural gas sources have been used for some decades, it is through the progression of compression techniques to become a more viable alternative energy source. Particularly, it is being used in cars in order to reduce carbon emissions.

Demand for natural gas has been increasing, however, it comes with some issues, including emitting greenhouse gases.

Different Sources of Alternative Energy (part 1)


The issues that surround the use of fossil fuels, especially in case of climate change, were considered earlier than we think. In 1896, Svante Arrhenius, a Swedish scientist, was the first person stating that the use of fossil fuel could contribute to global warming.

This issue has become a hot topic for the last few decades. Nowadays, there is a general shift towards environmental awareness while the sources of energy are coming under closer scrutiny. Therefore, a number of alternative energy sources have risen and contributed something positive when being compared to fossil fuels. Lower emissions, lower prices, and the reduction of pollution are all advantages which the use of alternative energy can provide.

Here we write down the list of the most prominent alternative energy sources as well as the benefits they offer and potential for increased uptake in the near future.

  1. Hydrogen Gas

Hydrogen is completely clean burning fuel, unlike any other form of natural gas. Hydrogen gas cells emit only warm air and water vapor when in use.

However, it is mostly derived from the use of fossil fuels and natural gas. Therefore, it can be argued that the emissions which are created to extract hydrogen gas counteract the benefits of its use.

Although the process of electrolysis, essential when splitting water into oxygen and hydrogen, makes this less of a problem, electrolysis can still rank below the previous methods for extracting hydrogen, despite the fact that research continues to make it more efficient.

  1. Tidal Energy

Tidal energy uses the water power to generate energy, much like with the hydroelectric method. However, in many cases, its application has more in common with wind turbines.

The potential of this fairly new technology is enormous. A recent report in the UK estimated that tidal energy could meet up to 20% of the current electricity demands of this country.

The use of Tidal Stream Generators is the most popular form of tidal energy generation. These use the ocean’s kinetic energy to power turbines, without producing any waste of fossil fuels.

Global Warming Climate Change Affects Upon the Ozone Layer

Very few people will deny that global warming climate change is one of the most topical issues facing this world today. We have also heard how global warming climate change can affect the ozone layer. Scientists believe that as greenhouse gas emissions continue to heat up the earths atmosphere, it will affect the ozone layers […]