Is solar energy inexhaustible and will solar energy run out?

The energy that the sun is feeding us now is the energy that hydrogen releases when it fuses into helium, and about 5 billion years later, most of the sun's hydrogen will fuse into helium, which is helium that will continue to fuse into nitrogen, and then nitrogen will coalesce into oxygen. All of these processes can release energy, but in fact, not all of that energy is available to humans.

When the sun's helium begins to coalesce, it will become a giant helium atomic bomb, expanding its diameter by more than 100 times. Due to excessive expansion, its surface temperature will decrease, causing the color of the sun's surface to change from the current high-temperature white to low-temperature red, becoming a "red giant". That's the end of the world for humanity!

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The sun's energy is limited, but it is indeed huge, and there is energy similar to light, in the belly of the sun, running slower than a snail, which also allows the solar energy to continue to burn steadily and release energy.

When the sun burned out, there would be no so-called solar energy in the current sense.

No, when the helium and hydrogen in the interior of the sun are fused, there is a loss of mass because of the large amount of energy.

When the sun's helium and other elements are used to a certain extent, the sun will become a red giant, which is the later age of the star, and then the sun will ** and disappear into a nebula.

The sun also has a lifespan, but its life is much longer than the fate of human beings, so it can be considered infinite relatively speaking. Rest assured, the sun is ripe now, and it will not run out in your lifetime.

It is inexhaustible and inexhaustible for the human process.

Relative to the short history of mankind, solar energy can indeed be considered inexhaustible.

When the sun is gone, of course, there is no solar energy.

Of course not, when the sun runs out of life, solar energy will be gone.

No, but that's dozens, hundreds, thousands, ......years.

Nothing is endless.

The heat emitted by the sun has been moistening everything for a long time, according to scientific research, the heat emitted by the sun every second is as high as Erg, and since the day of the birth of mankind, many people have wondered, will the big fireball of the sun burn out one day? The current conjecture of the sun has given rise to four hypotheses.

1. Substance combustion:

The oldest hypothesis is the burning of matter, and astronomers believe that the components of the sun itself are constantly burning, which is why it emits heat and energy. According to this hypothesis, the sun is assumed to be composed of hydrogen and oxygen, and according to our calculations of the size of the sun, even if the sun burns sufficiently, it will only burn for 3,000 years. The fact that the earth's lifespan is billions of years old shows that this hypothesis is untenable and even ridiculous.

Second, the meteor said:

The main theory of meteors is that meteors with great kinetic energy hit the sun, and its huge kinetic energy is converted into heat energy, because there are many meteors around the sun, they are constantly attracted by the gravitational pull of the sun and crash into the sun, resulting in the continuous burning of the sun. However, this hypothesis has also been disproved, and it is impossible to rely on meteors to keep the sun burning.

3. Shrinkage said:

Astronomer Helmholtz proposed that the sun is constantly shrinking its volume to increase its temperature and maintain thermal equilibrium, but this method can only be maintained for 50 million years through testing and calculation, so this hypothesis is also untenable.

Fourth, nuclear fusion theory:

This is a widely accepted theory that the sun is powered by nuclear fusion at its core, and that the sun will one day run out of fusion fuel in its core and stop burning. The main components of the sun are hydrogen and helium, and due to contraction, the temperature and pressure of the core increase to produce a nuclear fusion reaction, so a large amount of light and heat is emitted, and it is calculated that the sun will run out of hydrogen atoms after about 5 billion years, after which it will collapse.

The sun is a kind of energy source, it shines and heats, but the energy will be exhausted one day, and the behemoth of solar energy is not immune, depletion is inevitable, and the yang energy comes from thermonuclear fusion inside the sun. The temperature in the center of the sun is as high as 15 million degrees Celsius, and the pressure is enormous.

When the interior of the Sun runs out of hydrogen, that is, in 5 billion years, if humanity has not yet come up with a countermeasure, the Sun will expand back and swallow Mercury, Venus, Earth, Mars, and even Jupiter. Eventually become a red giant or become a black hole. However, scientists have found that there are still large hydrogen resources on the surface of the sun.

The energy of the sun mainly comes from the internal nuclear fusion, the main components of the sun are hydrogen and helium, due to the huge mass of the sun, under the action of gravity, its interior is in a state of high pressure and high temperature, under the state of high temperature and high pressure, 4 hydrogen nuclei are fused into a helium nucleus, during which there will be a mass loss, and the loss of mass is converted into energy and released, by Einstein's mass-energy equation: energy = mass * the square of the speed of light, you can get that fusion will produce great energy, and these energies will radiate from the sun in the form of light, The light and heat that form what is now the sun.

The sun is the only energy source in the entire solar system, all energy life in the solar system is derived from the heat of the sun, the light and heat of the sun are very powerful, at present, human beings have no way to get close to the study, and it is difficult to even get close, there is life on the earth because the distance from the sun is just right, it can produce water, so there can be life.

As long as it is energy, it may be used up one day, but it is very difficult to keep the sun without energy. Personally, I think, but at least we don't have to worry about whether the sun will run out of energy in this life.

The sun can shine and heat, and the energy will be exhausted sooner or later, and the sun cannot be replaced by other stars, so the universe will cease to exist one day when the solar energy is exhausted.

The sun will run out. The sun is undergoing nuclear fission and nuclear fusion all the time, and the energy is decreasing, and there will always be a day when it runs out.

Yes, according to scientific research, the sun will die in billions of years, too long ago for us to worry.

The sun will also run out of energy, how long can the sun "burn"?

Solar energy has the advantages of universality, harmlessness, large reserves, and long-term use.

1) Universal: The sun shines on the earth, and there is no geographical limit, whether it is land or sea.

Found everywhere in the mountains and on the islands, it can be exploited and used directly, easy to collect, and free from mining and transportation.

2) Harmless: The development and utilization of solar energy will not pollute the environment, and it is one of the cleanest energy sources.

3) Enormous: The amount of solar radiation reaching the earth's surface every year is equivalent to about 130 trillion tons of coal, which is the largest energy source that can be exploited in the world today.

4) Long-lasting: According to the rate of nuclear energy produced by the sun, it is estimated that the storage of hydrogen is enough to last for tens of billions of years, and the life span of the earth is about billions of years, in this sense, it can be said that the energy of the sun is inexhaustible.

From the energy conservation and emission reduction targets of various countries and the United Nations' "Special Report on Renewable Energy", it can be seen that achieving a high proportion of renewable energy substitution by 2050 is a worldwide trend, which will promote the development of China's solar photovoltaic power generation industry.

By 2030, the entire energy demand will reach 5 billion tons of standard coal, and in 2050 it will reach 5.2 billion tons, renewable energy will account for 40% of the total energy demand in 2050, and the proportion of renewable energy in electricity demand will reach 60%, and the installed capacity of photovoltaic power generation may reach 1 billion kW. The strong support of national policies will promote the rapid and healthy development of China's solar photovoltaic power generation industry.

In the short term, solar energy is inexhaustible; But in hundreds of millions of years, solar energy will eventually run out.

For now: solar energy is not an inexhaustible resource. That's right.

It can only be said to be an inexhaustible and endless energy source within 10 billion years. Because the sun is in its youth, when the sun is old, it becomes a red star or even a white dwarf, and finally it becomes a black hole, and it will not have any light, and then it will no longer be able to use solar energy as it is now. Because 10 billion years is a very distant and very long time for human beings, almost equivalent to infinitely long, so relative to human beings, the current solar energy is inexhaust......ibleIf the time scale rises to 100 billion years, I'm afraid no one dares to say that solar energy is inexhaustible

Unless someone invents a machine that can use the power of black holes, such as solar water heaters now, there may be "black hole energy water heaters" by then

Sooner or later, solar energy will be consumed. Because sooner or later the nuclear fission reaction of the sun will stop.

No, although the total amount of solar energy is equivalent to more than 10,000 times the energy used by humans today, it will run out one day.

The Sun is also a star, so it can also recede and evolve into a black hole, and for now, the Sun is an inexhaustible source of energy. But after hundreds of years, thousands of years, it's hard to say....

No, everything in the world has its own lifespan, and it will disappear at a certain time.

Theoretically, solar energy is indeed inexhaustible, but we still have to use it wisely.

The sun is inexhaustible at the moment, but solar energy will run out one day.

I think the current trend should be, after all, the sun lives longer than the earth.

No, the sun also has a lifespan, and the life span of the sun is very long.

It stands to reason that as long as the sun doesn't go out, the sun will never go away.

That's right, as long as the sun is there, then it can be converted into solar energy.

I think so, because there are still a lot of them, and they can be used in large quantities.

Because the sun has been indispensable for hundreds of millions of years, it is inexhaustible.

Solar energy. Solar energy.

Solar energy generally refers to the radiant energy of sunlight. There are two ways to use solar energy: passive utilization (photothermal conversion) and photoelectric conversion. Solar power is an emerging form of renewable energy utilization.

Solar energy in a broad sense is the ** of many energies on the earth, such as wind energy, chemical energy, potential energy of water, and so on.

Using solar cells, the energy contained in sunlight is converted into electricity through photoelectric conversion.

Use a solar water heater to heat water using the heat of the sun's rays.

The heat of sunlight is used to heat water, and the hot water is used to generate electricity.

Desalination using solar energy.

At present, the use of solar energy is not very popular, and there are still problems of high cost and low conversion efficiency of solar power generation, but solar cells have been applied in providing energy for artificial satellites.

Currently, the world's largest rooftop solar panel system is located in Buerstadt, southern Germany, covering an area of 40,000 square meters and generating 4.5 million kilowatts of electricity per year.

In order to meet the carbon dioxide reduction requirements of the Kyoto Protocol, Japan has installed solar photovoltaic panels throughout Japan, and in Iida City, Nagano Prefecture, located in the Ministry of Nagano Talks, the proportion of residents installing solar photovoltaic panels on roofs is even 2%, which is the first in Japan.

Solar energy can be divided into 2 types:

1.Solar photovoltaics.

A photovoltaic panel module is a power generation device that generates direct current when exposed to sunlight and consists of thin, solid-state photovoltaic cells made almost entirely of semiconductor materials, such as silicon. Since there are no moving parts, it can be operated for a long time without causing any loss. Simple photovoltaic cells can power watches and computers, while more complex photovoltaic systems can illuminate homes and power the grid.

Photovoltaic panel modules can be made into different shapes, and the modules can be connected to generate more electricity. In recent years, photovoltaic panel modules have been used on rooftops and on the surface of buildings, and have even been used as part of windows, skylights or shading devices, and these photovoltaic installations are often referred to as photovoltaic systems attached to buildings.

2.Solar thermal energy.

Modern solar thermal technology aggregates sunlight and uses its energy to generate hot water, steam, and electricity. In addition to using appropriate technology to harvest solar energy, buildings can also harness the sun's light and heat by incorporating appropriate equipment in their design, such as giant south-facing windows or building materials that absorb and slowly release solar heat.

The internal temperature of the sun is as high as 20,000 degrees, with a pressure of 200 billion atmospheres. The Earth's highest atmosphere receives only 1/2.2 billion of the total energy released by the Sun. Every year the Earth's energy from the Sun is.

kilocalories, equivalent to 137 trillion tons of standard coal. Almost all of the energy we use today, with the exception of nuclear power, comes from converted solar energy. The direct use of solar energy, such as solar cells and solar cars, has been successfully developed, and will be used on a large scale for industrial and civil use as the cost decreases.

The key to harnessing solar energy is a matter of technology. The U.S. currently uses solar power and is estimated to account for 1% of total U.S. electricity generation at the beginning of the 21st century. India also attaches great importance to the use of solar energy, which has been spent on research and experimentation at a cost of Rs. 100 million, mainly for cooking, heating and communications in remote areas.

In addition, India has adopted a subsidized sales approach** for 100,000 solar cookers, and about 100,000 villages currently use solar energy as the main means of solving energy problems.