In addition to wind power and photovoltaics, what is the application prospect of seawater temperatur

Seawater temperature difference power generation technology is feasible in principle, but there is no mature technology in the world, and the current technology can only complete the generator set to use the seawater temperature difference to maintain self-operation, can not output energy, I believe that it will be realized in the near future.

How old are you? What do you want to do?

If you want to write a ** or something, then of course you can write, first write a big background, what energy conservation and emission reduction or something, introduce the principle, and then talk about the latest progress of this technology, and finally say that the prospect is very good.

If you're asking about the actual situation, the prospects for the use of this thing are very bad.

Why? Because, the Boxing of an industry is not only whether it can be realized technically (now as long as it is not too outrageous, technically anything can be made for you), but mainly lies in the commerciality of the project. For example, if you spend 10 million to build a generator, it runs for 30 years to generate electricity and sells it for money, and then it ends up selling for 1 million dollars, and no one pays to build this kind of thing.

For example, photovoltaic and wind power are developing rapidly, but modern wind turbines have appeared for at least 80 years, and photovoltaic has also been around for 60 years. A new technology must first be thought of, and then someone will do experiments to see if it is feasible, make a prototype, look for investment, and then promote it to the market, and then it can be put into practice in large quantities.

This is only the process of the product itself, and the development of other peripheral industries also takes time, such as photovoltaics, the technology of solar panels may be mature, but silicon purification has not kept up, silicon prices have risen sharply, and the development of solar panels is high, which also limits the development of photovoltaics. In addition, the construction of the power grid has not kept up, the energy storage technology has not kept up, and the lack of investigation of wind and solar energy resources will also limit the development of wind power and photovoltaic power.

Based on this situation, if you look at the application of seawater temperature difference power generation, you can conclude that this technology is at most at the prototype stage. Is there a formal ** or agency that has made even a rough statistics on its resource reserves?

Is there an experimental power station? What components does it need, and is the industrial chain of these components formed? It generates electricity at sea, and is our policy ready to support it?

Is it a preferential price for electricity, or is it a permit for land use? Is the power grid willing to build corresponding transmission lines to guide them to the grid? I think the answer to these questions is no.

What's more serious is that there are many competitors in this power generation method, such as thermal power, hydropower, nuclear power, wind power, photovoltaic, solar thermal, geothermal, wave... These are more mature technologies--- and if we have cheaper, better ways to generate electricity, who cares about an expensive, risky way of generating electricity?

To sum up, this type of power generation is not optimistic.

The prospect of the use of thermoelectric power generation is very slim. Tidal power generation is widely used.

Good prospects. But none of them are favored.

The surface part of the ocean surface at a depth of 0,100 m absorbs a large amount of solar radiation heat every day. The temperature of the surface layer of the ocean is about 20 degrees Celsius higher than the temperature in the depths of the ocean. The energy produced by this temperature difference is called ocean temperature difference energy.

Therefore, the ocean can be thought of as a huge reservoir of solar energy.

How can we effectively use the energy of the temperature difference in seawater to serve human beings? In 1881, the French Arsenedarsonval first proposed the idea of generating electricity with ocean temperature differences. In 1930, Claude succeeded in generating electricity for the first time off the coast of Cuba using the energy of ocean temperature differences, but the net power generation was negative because the pumps and other power of the power generation system consumed more electricity than the electricity generated by the power generation system.

However, people were not discouraged. In 1979, Hawaii's mini-otec power generation system produced the first 15 kilowatts of pure power.

The process of generating electricity from the ocean temperature difference is as follows: the warm water from the surface of the ocean is pumped to the room temperature evaporator, and the ammonia, freon and other flows** are heated in the evaporator to evaporate into high-pressure gas**. The high-pressure gas** is sent to the turbomachinery, which rotates and drives the generator to generate electricity, while the high-pressure gas** becomes a low-pressure gas**.

The cold water in the deep water area is pumped into the condenser to condense the low-pressure gas ** from the turbine machine ** into a liquid**. After the liquid** is sent to the compressor for pressurization, it is then sent to the evaporator for a new cycle.

Compared with other forms of power generation, ocean temperature difference power generation has the following characteristics: The ocean covers 70% of the earth's surface. Since this energy comes from the sun, it can be said that it is inexhaustible and endless.

The temperature difference of seawater is only 20 degrees Celsius and belongs to the low rot vertical grade energy, and the maximum conversion efficiency is only about 4%. It belongs to natural energy, will not cause environmental pollution, compared with other natural energy, can be day and night, not limited by time, season, climate and other conditions, energy is stable. Because seawater is corrosive and biofouling, the equipment should consider the use of corrosion-resistant and less polluting materials, and at the same time consider the countermeasures of anti-biotasine fouling, because the seawater pumped up from the deep sea contains more nutrients, which is conducive to improving the output of marine fisheries.

In view of the above characteristics, the United States, Japan and other countries rich in marine resources are currently actively researching and applying marine temperature difference power generation systems, making it a powerful choice for mankind in today's shortage of resources.

Let me put it in layman's terms, electricity is not just sent out and can be used, if you want to use electricity, do you want to transmit it through wires? Then let me tell you, in the process of transmission of electricity, a considerable part of electricity is lost, that is, the electrical energy is hindered, and the heat is converted into heat energy. Of course, there is technology to ensure that the transmission is loss-free, but the condition is absolute zero (simply put, the temperature in the daily life environment cannot meet the requirements, that is, large-area transmission cannot be applied, only suitable for laboratories, etc., I believe there will be a way to solve it in the future).

The first problem is loss, let's talk about electricity, electricity is not only used by the people, but also large enterprises, large scientific research units, China has been a manufacturing country for many years, that is to say, the proportion of industry is huge (huge energy consumption), the electricity of enterprises is not enough, which exploits the electricity of the people, and there is no electricity you said.

As for the rise of multi-energy and multi-mode power generation (in fact, there has been this technology for a long time), affected by the environment, energy, and infrastructure construction (in short, the technology is immature, and the environment is not suitable), and the development of these energy sources is local, such as the application of solar energy in Lhasa, it will not go all the way to Shanghai people to use, and naturally Qinghai's wind energy will not be sent to Harbin for use. Adapting measures to local conditions, developing technology, and improving efficiency are the current policies and strategies that should be implemented, rather than relying on someone else's telegram to send you over, which is unrealistic.

Wind, solar, tidal, and geothermal energy are used to generate electricity at a very low rate and at a high cost!

First of all, high-tech power generation technology is not yet mature, and the efficiency is not large, because of geographical limitations, some places still rely on traditional means. Then there is the waste of electricity. Unnecessary display lights on the street are on 24 hours a day, and other phenomena cause a considerable waste of power resources.

The proportion of electricity generated by these new energy sources in China's power generation is still very low, less than 10%. The main power generation still relies on thermal power, hydropower, and nuclear power.

Solar, tidal, and geothermal energy are not used on a large scale. Although wind energy is developing rapidly on a large scale, it is very unstable, and the cost of generating electricity is also very high, almost 1 yuan. And the Chinese population, there are many industries, and the demand for electricity is a lot!

Per capita electricity consumption is not high, and if it meets the per capita electricity consumption standard of the United States, there is still a large power gap.

It is true that the application of new energy is gradually emerging in China, but at present, the construction cost of new energy is high, the conversion rate is low, and there are many restrictions on itself (the resource conditions in many places are simply not enough to build, and the gains outweigh the losses), and the real rise needs to be further improved. Therefore, the current mainstream power supply should still be thermal power supply for a period of time in the future.

The resources used by thermal power generation are non-renewable resources, which need to be saved, and at the same time, if the power plant carries out high-load power supply for a long time, it will increase the wear and tear of its mechanical circuits, increase expenditure, and waste energy, so in some large cities, it is often limited power measures, which is the best power supply mode calculated by professionals, and the maximum efficiency of electricity is provided while consuming resources as little as possible.

Ocean temperature difference power plants are expected to have no adverse impact on the environment, but large-scale development will need to consider the possible impact on the climate. Because it can pump deep sea nutrient-rich seawater to the upper layer, it will be conducive to the growth and reproduction of marine organisms.

The economics of oceanic thermoelectric power plants cannot compete with those of oil-fired power plants, but they are one of the most promising ways to generate electricity from renewable sources. If power generation, mariculture and freshwater are combined for comprehensive development, better economic results can be obtained. For remote islands, the development of ocean temperature difference energy may be economically advantageous at present.

The cost of investing in a power station is large

No more than 10,000 yuan to bury KW, 25MW investment cost 250000000 yuan.