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.

Several energy-efficient solutions (Part 1)

Saving energy not only saves money but also reduces the need to use fossil fuels such as kerosene, coal, natural gas.

Reducing the use of these fuels also means reducing CO2 – the main cause of global warming and other forms of pollution – is released into the environment.

     With just a few small actions, you will reduce a large amount of CO2 emissions and reduce the cost of household bills.

     1. Increase the refrigerator’s temperature. Refrigerators consume about 20% of the electricity of all appliances in the home. Make sure the power save mode switch is always turned on. Check the gaskets around the doors to make sure they stay clean and snug.

     2. Set the washing machine to warm or cold water, not the hot wash mode. This will reduce about 227 kg of CO2 for electric machines to heat water and 68 kg of CO2 for gas types.

     3. Make sure that when washing dishes with a machine, the bowls and dishes must be filled in the basket.  You can turn off the chopsticks drying mode. This will save you 20% of your machine’s electricity consumption.

     4. Reduce the temperature of the hot water heater. Instead of setting the temperature to 600C, set 500C. If each family reduced the temperature of the hot water heater to 100C, we would reduce 45 million tons of CO2 emissions each year – equivalent to the amount of CO2 emitted by both Kuwait or Lebanon.

     5. Every time you replace old appliances, choose energy-efficient products. Look to see if there is an energy saving label on the product. Buy the product best suited to the needs of the family, not too big. A horizontal cage washing machine, for example, can save 60% to 70% of water usage compared to a vertical cage machine. Replacing a 1973 refrigerator with a new energy-efficient model could reduce 1.4 tons of CO2 emissions. Buying a solar water heater system reduces 4.9 tons of 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.

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.

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