Advantages of solar energy:
(1) Universal: the sun shines all over the earth, without any geographical restrictions, no matter the land or the ocean,
No matter the mountains or islands, it is everywhere. It can be directly developed and used, easy to collect, and does not require mining or transportation.
(2) Harmless: The development and use of solar energy will not pollute the environment. It is one of the cleanest sources of energy, which is extremely valuable today as environmental pollution becomes more and more serious.
(3) Huge: The energy of solar radiation that reaches the Earth's surface each year is approximately equivalent to 130,000 billion tons of coal, and its total amount constitutes the greatest energy that can be developed in the world today.
(4) Long term: based on estimates of the rate of nuclear energy produced by the soLeil, the storage of hydrogen is enough to last tens of billions of years, and the lifespan of the Earth is also about billions of years. In this sense, we can say that the energy of the sun is inexhaustible.
Solar energy refers to the energy of thermal radiation from the sun, which is mainly expressed in the form of solar rays. Nowadays, it is typically used to generate electricity or provide energy for water heaters. Since the birth of life on earth, it has relied primarily on thermal radiation energy provided by the sun. Since ancient times, humans have also known how to use sunlight to dry objects and use it as a method of making food, such as crafting. salt and dry the salted fish. With the decline of fossil fuels, solar energy has become a significant part of human energy consumption and continues to decline.develop. There are two ways to use solar energy: photothermal conversion and photoelectric conversion. Solar power generation is an emerging renewable energy source. Solar energy in a broad sense also includes wind energy, chemical energy, hydropower, etc. on earth.
Compared with commonly used thermal power generation systems, the advantages of photovoltaic power generation are mainly reflected in:
①No risk of depletion
②Safe and reliable, no noise, in addition to the absence of polluting emissions, it is absolutely clean (no pollution);
③It is not limited by the geographical distribution of resources and can take advantage of building roofs, for example, areas without; electricity and areas with complex terrain;
④Can generate electricity and supply electricity on site without consuming fuel or erecting power linestransmission;
⑤High power quality;
⑥Easy to use users need to accept emotionally;
⑦ The construction period is short and the time spent on Obtaining energy is short.
Disadvantages:
①The energy distribution density of irradiation is low, that is, it occupies a huge area;
p>②The energy obtained is the same as that of irradiation. four seasons, day and night, and cloudy and sunny weather conditions.
③The cost of electricity production is high
④The manufacturing process of photovoltaic panels is not environmentally friendly