Chào mừng bạn đến với Selfomy Hỏi Đáp, hãy Hỏi bài tập hoặc Tham gia ngay
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trong Tiếng Anh lớp 8 bởi Silent Cử nhân (3.9k điểm)
choose one energy you like to use and write about its advantages and disavantages

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bởi quangphu412 ● Cộng Tác Viên Cử nhân (4.0k điểm)
 
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A kind of power can be defined as a system that extracts or generates electricity. There are numerous energy sources, each with distinct advantages and downsides. Power generated by wind-tuned turbines is one of the numerous energy sources. Wind energy is categorized as a renewable form of energy given that it is limitless. This study investigates the benefits and drawbacks of wind energy. Wind energy can be attributed to producing clean energy. As a result, unlike some other energy sources, wind power does not contaminate the environment. The turbines used to generate wind power emit no emissions to the environment. Emissions from alternative sources of energy contribute to greenhouse effects, climate change, and acid rain. This is typically true of natural gas or coal-fired power facilities. Another advantage of wind energy is that it is based on renewable wind power. Wind can be thought of as a passive form of solar energy. This is due to the fact that temperature increase is the primary cause of wind-current generation. It is also worth noting that wind energy might be considered a domestic energy source. This is due to the fact that its users may be able to manufacture it in their own backyards if their homes are appropriately positioned. This is quite frequent in the United States. Also favourable is the reality that wind availability in the United States is vast, resulting in significant volumes of power produced by wind energy generation.

 

Among the several advantages of wind energy is the fact that this renewable energy is regarded as one of the least expensive renewable energy sources. The estimated average cost of producing electricity from wind has been determined to be between 4 and 6 cents for each unit (kilowatt-hour) produced. This, of course, is dependent on the availability of airflow at the project's location as well as the complexities of financing a specific project. Another advantage is that the majority of wind turbines utilized in power generation are located on ranches and farms. This is a very useful characteristic because farmland and ranches are placed in rural locations, and putting turbines in these locations has the potential to boost the local economy. Furthermore, because wind turbines require a limited area, the land can be utilized for other commercial development when they are put in these farms and ranches. Plant owners benefit landowners by paying the rental bills for the use of the land on which the plants are grown. Furthermore, wind energy is completely free to use. This indicates that everyone with access to a turbine can generate electricity through the usage of wind power for free. Wind power can also be properly harnessed. Another advantage is that many people are enthralled by the sight of wind turbines, therefore the turbines can be employed as a geographical feature for various commercial purposes such as tourism. It is also worth noting that wind energy helps both underdeveloped and developed countries fill energy shortfalls. Wind turbines are available in a variety of sizes, allowing them to be used by a wide range of users, from enterprises to households. The benefits of wind energy are limitless. Let us now consider the disadvantages of wind energy.

 

There are a lot of downsides to using wind energy. For starters, wind energy is cost-competitive with traditional power sources. The effectiveness of a wind power plant is heavily reliant on the power of the wind location. Thus, wind places where the wind is not as energetic might be more costly than traditional power-producing methods. This is despite the fact that wind energy costs have dropped substantially in the recent decade. Wind energy, on the other hand, is known to have a greater initial expenditure when compared to the utilization of fossil-fuelled generators. Another issue is that the wind turbines used to make electricity are generally located in rural regions. This happens because these locations are remote from towns and cities, where power is desperately needed. Thus, transmission is required when cities consume wind electricity created in rural locations. This raises the expenses of using wind energy. Other types of land use may outweigh the benefits of developing wind resources and using turbines to accomplish this objective in some regions. This is because various uses of the land may provide greater returns than generating. Wind energy investors and other stakeholders have become more concerned about the noise exposure connected with wind energy generation, the aesthetic aspects associated with whirling blades, the unexpected killing of wild birds by the blades, and so on. Despite the fact that a number of these issues have already been handled or mitigated by the use of advanced technological plants. As the turbines are produced, it is also suggested that wind energy generation adds to environmental degradation and, as a result, global warming. Another problem is that big wind farms are necessary to produce appropriate quantities of energy for communities. Because the wind is not continuous, wind power generation is not as foreseeable as conventional power generation. It should be remembered that there may be occasions when a wind farm does not generate any power.

 

As seen in the preceding section, the majority of elements of wind energy are detrimental. For example, the location of the majority of wind production plants in rural areas provides an opportunity to improve the economic situation of the people who live there. At the same time, this component of wind energy may result in higher costs due to transmission to cities that may require more power than the locals. In a nutshell, wind energy has more advantages than disadvantages, and hence it is recommended that more wind plants be employed in the creation of power.

 
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bởi lMINHVY Cử nhân (2.2k điểm)
Advantages of Solar Power?Solar energy is a clean and renewable energy source.Once a solar panel is installed, solar energy can be produced free of charge.Solar energy will last forever whereas it is estimated that the world’s oil reserves will last for 30 to 40 years.Solar energy causes no pollution.Solar cells make absolutely no noise at all. On the other hand, the giant machines utilized for pumping oil are extremely noisy and therefore very impractical.Very little maintenance is needed to keep solar cells running. There are no moving parts in a solar cell which makes it impossible to really damage them.In the long term, there can be a high return on investment due to the amount of free energy a solar panel can produce, it is estimated that the average household will see 50% of their energy coming in from solar panels.

 

Disadvantages of Solar Power?Solar panels can be expensive to install resulting in a time-lag of many years for savings on energy bills to match initial investments.Electricity generation depends entirely on a countries exposure to sunlight; this could be limited by a countries climate.Solar power stations do not match the power output of similar sized conventional power stations; they can also be very expensive to build.Solar power is used to charge batteries so that solar powered devices can be used at night. The batteries can often be large and heavy, taking up space and needing to be replaced from time to time.
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bởi nhthuyvy16 ● Cộng Tác Viên Tiến sĩ (16.5k điểm)
A year's worth of the world's energy demands might be met by the energy the sun supplies for the planet for one hour. Undoubtedly, the sun is a potent source of energy, and even if we can only capture a small portion of it, harnessing this power by putting up solar panels may have a big impact on the globe.

Solar energy has faced a lot of criticism for being too expensive or ineffective, but it has since been shown to be quite advantageous, both for the environment and the private economy.

The fact that solar energy is a completely renewable energy source is the most significant advantage of solar panels among all its other advantages. It is available every day and may be used wherever in the world. Unlike some other energy sources, solar energy will never run out. We will be able to access solar energy for as long as there is a sun, which means that we will have at least 5 billion years before the sun dies, as predicted by experts.

Your energy expenses will go down since you'll be able to use part of the electricity your solar system has produced to satisfy your demands. Depending on the size of the solar system and how much power or heat you use, you can save a variety of amounts on your utility bill. For instance, if your company now uses commercial solar panels, switching to a larger system might significantly reduce your energy costs.

Numerous uses exist for solar energy. Using photovoltaics, you may produce power or heat (solar thermal). Solar energy may be used to distill water in locations with little access to clean water, generate electricity in places without an electrical system, and even power spacecraft. The materials used to construct structures may incorporate solar energy as well. Transparent solar energy windows from Sharp were recently unveiled.

The technology in the solar energy sector is always improving, and advancements will accelerate in the next years. Nanotechnology and quantum physics advancements have the potential to boost solar panel efficiency and double or even treble the electrical input of solar power systems.

Buying a solar system requires a significant up-front expense. This covers the cost of the wiring, installation, batteries, inverter, and solar panels. However, as solar technology is always improving, it is reasonable to predict that costs will decrease in the future.

Cloudy and wet days still allow for the collection of solar energy, but the solar system's effectiveness is reduced. In order to efficiently collect solar energy, solar panels need sunshine. Consequently, the energy system may noticeably be impacted by a few overcast, rainy days. You should also consider the fact that solar energy cannot be captured at night.

Thermodynamic panels are an alternative to take into account, however, if you also need your water heating system to operate at night or during the winter.

Solar energy must be utilized immediately unless it is stored in huge batteries. Off-grid solar systems that employ these batteries may be charged throughout the day to utilize the energy at night. Although it is rather pricey, this is a fantastic option for using solar energy continuously. Most of the time, it makes more sense to solely utilize solar power during the day and use grid power at night (you can only do this if your system is connected to the grid). Fortunately, since your energy needs are often higher during the day, solar energy can help you fulfill the majority of them.

Solar energy can be linked to pollution, despite the fact that it is far less than that caused by other energy sources. The generation of greenhouse gases has been linked to solar system installation and transportation. Additionally, several dangerous and poisonous substances are utilized in the production of solar photovoltaic systems, which may have an indirect negative impact on the environment. However, compared to other alternative energy sources, solar energy produces a lot less pollution.

 

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