Geothermal energy and groundwater utilization?

Geothermal power generation. Geothermal heating.

Geothermal farming. Geothermal medicine.

Geothermal water refers to groundwater that is higher than the temperature of the surrounding rock at the observed depth. The temperature at which water starts boiling at a certain pressure is called saturation temperature. The greater the depth of the geothermal water, the higher the static pressure, and the higher the saturation temperature.

Geothermal water is groundwater, which is relatively high temperature.

Geothermal energy is the natural heat energy extracted from the earth's crust, which comes from the lava in the earth's interior and exists in the form of heat, which is the energy that causes volcanic eruptions and **. The Earth's interior can reach temperatures of up to 7,000 meters, and at depths of 80 to 100 miles, the temperature drops to 650 to 1,200. Through the flow of groundwater and the surging of lava into the earth's crust 1 to 5 km above the surface, the heat can be transferred closer to the surface.

The hot lava heats up the nearby groundwater, which eventually seeps out of the ground. The simplest and most cost-effective way to harness geothermal energy is to take these heat sources directly and extract their energy.

Humans have long used geothermal energy, such as hot springs for bathing, medical treatment, underground hot water for heating, building greenhouses for crops, aquaculture, and drying grains. However, it was only in the middle of the 20th century that geothermal resources were truly recognized and exploited on a larger scale.

Geothermal energy can be harnessed directly. Geothermal energy refers to the heat energy contained in the earth's crust, which can be converted into electricity or directly used for heating, water heating, etc.

There are two main ways to directly harness geothermal energy:

1.Ground source heat pump: Ground source heat pump is a technology that uses geothermal energy with a relatively constant underground temperature to heat or cool limbs. Ground source heat pump systems use pipes to transfer underground temperature to the surface, and then provide heating heat or cooling through compressors, heat exchangers and other equipment.

2.Direct use of geothermal energy: In some areas, where the temperature of the underground is high, such as hot springs, this energy can be used to heat heat, produce electricity or heat water. Some geothermal areas can directly pump up underground hot water for heating, agricultural irrigation, etc.

It should be noted that the direct utilization of geothermal energy requires special conditions for underground thermal energy resources, and in general, not all regions are suitable for direct utilization of geothermal energy. Therefore, when considering the application of geothermal energy, it is necessary to comprehensively consider the local geology, groundwater flow, geothermal resources and use demand.

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How to use geothermal resources is as follows: First, do a good job in the early exploration and evaluation work. Geothermal energy is mainly stored in the earth's internal rock and soil body, fluid and magma body, which can be divided into shallow, medium and deep according to the depth, and it is technically difficult to exploit it.

At present, with the continuous development of new technologies for geothermal resource exploitation, the circular development model of "balanced production and irrigation, heat extraction without water consumption" is being popularized and applied. This model can effectively avoid the problems of resource depletion and land subsidence caused by the mining of deep confined water. Therefore, it is suggested that an accurate assessment should be carried out when exploiting geothermal resources, and a reasonable and practical plan should be put forward to avoid "one size fits all".

Second, strengthen scientific and technological leadership and equipment innovation. In order to expand the utilization of geothermal energy, it is necessary to strengthen innovation management, and forward-looking, revolutionary and subversive geothermal theory and technology research are needed. It is also necessary to achieve key breakthroughs in key core technologies and continue to promote the geothermal industry to reduce costs and increase efficiency.

Third, promote the process of data management and intelligence. Strengthen intelligent management, promote the integration of geothermal industry and information technology, further improve the level of data analysis and management, and give full play to the role and value of data. Therefore, it is necessary to improve the geothermal information management platform, improve the timeliness of data, use information technology to improve dynamic monitoring, and implement data analysis and early warning reflecting the impact of geothermal resource development and environmental wheels.

Fourth, it should provide a good development environment for the development of geothermal resources. The creation of the environment requires the participation of all employees, and all localities should formulate and introduce relevant policies to encourage and support geothermal resource development enterprises to carry out technological innovation. Hope mine can help you <>

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Summary. Hello, dear, can use underground hot water resources for heating, geothermal water heating than other energy heating has the special advantages of saving fossil fuels and not causing urban air pollution.

Dear, hello, can use underground heat to pretend to be a clever water source for heating, geothermal water heating than other energy sources have the special advantages of saving fossil fuels and not causing pollution of the urban atmosphere.

There are two types of geothermal water extraction system: no recharge and no recharge system: no recharge system only sets up mining wells, and the pumped geothermal water is sent to the user and discarded after use; The recharge system is set up with a mining well and a recharge well, and the water pumped out from the mining well is returned to the recharge well after the user releases heat, and a certain distance is kept between the wells to avoid mutual interference. According to the mode of utilization, there are two types: direct utilization and indirect utilization

Direct use is to introduce geothermal water directly into the heat user system; The indirect use is to heat the secondary water with geothermal water through the surface heat exchanger, and the secondary volt water enters the heat user system for circulating heating.

Geothermal energy is a new clean energy source, which is the natural heat energy extracted from the earth's crust, which comes from the lava in the earth's interior and exists in the form of heat, which is the energy that causes volcanic eruptions and **. Geothermal energy is mostly renewable heat energy from deep within the earth, which arises from the decay of molten magma and radioactive materials from the earth. A small part of the energy comes from the sun, about 5% of the total geothermal energy, and most of the surface geothermal energy comes from the sun.

What is geothermal energy?

Geothermal energy is a clean energy source, and the rational development and utilization of geothermal resources has become more and more favored by people in the case of increasing environmental awareness and energy shortage. Among them, 250 billion tons of standard coal are stored within 2,000 meters of the surface. The national geothermal recoverable resources are 6.8 billion cubic meters per year, and the geothermal energy contained in it is 973 trillion kilojoules.

In terms of the scale of geothermal utilization, China has been ranking first in the world in recent years, and has been growing steadily at a rate of nearly 10% per year.

Geothermal power generation. Geothermal power generation is the most important way to utilize geothermal energy. High-temperature geothermal fluids should be applied to power generation first. Geothermal power generation and thermal power generation are based on the same principle, both of which use the thermal energy of steam to convert into mechanical energy in a steam turbine, and then drive a generator to generate electricity.

The difference is that geothermal power generation does not require huge boilers and does not consume fuel, unlike thermal power generation, and the energy used is geothermal energy. The process of geothermal power generation is the process of converting underground thermal energy into mechanical energy first, and then converting mechanical energy into electrical energy.

Geothermal energy exists underground, but we just need to collect it. Geothermal energy can be harnessed in three ways: Direct geothermal energy:

In hot springs or geothermal reservoirs close to the earth's surface, we can draw hot water directly to heat our rooms or offices. Geothermal water is pumped out through a heat exchanger and then introduced into the building's heating system. Used wastewater can be reinjected into wells leading to geothermal reservoirs, heated and reused.

History of geothermal usePeople have learned to use geothermal energy thousands of years ago without digging geothermal reservoirs. The ancient Romans used to use hot springs to heat rooms, bathe, and cook. In 1892, the world's first modern district heating system was built in Boise, Idaho, USA, which mainly used piped pumping hot springs to heat the public.

The world's first modern geothermal power plant appeared in 1904 in La Drelo, Italy. Today, geothermal energy is already being used in France, Turkey, New Zealand, the United States, Japan and other countries. Iceland is the country with the largest number of geothermal users in the world, and almost the entire city of Reykjavik is heated by hot springs and hot water pumped from underground wells.

Other cities, such as Klamath Falls in Oregon, even pump hot water** pipes under the road to help melt the snow and ice in the winter. Geothermal steam pumps: At a depth of several kilometers underground, the temperature of the soil and water is maintained at 10-15 degrees Celsius for a long time.

In fact, a little bit of temperature can be used to heat or cool homes and offices. The flow of water circulates through a series of underground and underwater pipes, between the underground reservoir and the building. A compressor or heat exchanger pumps the heat out of the pipes and transports them to the building's air network.

By the summer, the program was upside down. Pipes draw heat out of the room and carry it to underground or outdoor water, where it can be absorbed. Geothermal power stations:

Hot water or steam from the ground can be discharged from underground wells and used to generate electricity in power plants.

The energy from the hot lava in the earth's interior is expressed by heating water near the surface, and hot springs are all manifestations of this.

Geothermal energy is renewable heat energy that comes from deep within the earth. It is the decay of molten magma and radioactive materials from the earth. Deep circulation of groundwater and the intrusion of magma from the very depths into the earth's crust carry heat from deep underground to the near surface.

In some places, thermal energy reaches the surface with the natural gushing of hot steam and water, and the reserves of this thermal energy are quite large. It is estimated that the amount of heat transferred from the Earth's interior to the surface is equivalent to 100 pw?h。

Geothermal energy is an energy resource that comes from the Earth's interior. The temperature of lava ejected from volcanoes on Earth is as high as 1200 oC to 1300 oC, and the temperature of natural hot springs is mostly above 60 oC, and some even as high as 100 oC 140 oC. This shows that the earth is a huge heat reservoir with huge heat energy.

This heat seeps out of the earth's surface, and so there is geothermal heat. Geopotential energy is a kind of clean energy, which is a renewable energy source, and its development prospects are very broad.

The temperature of lava spewed out by volcanoes on Earth is as high as 1200 1300, and the temperature of natural hot springs is mostly above 60, and some even as high as 100 140. This shows that the earth is a huge reservoir of heat, containing a huge amount of thermal energy, from which geothermal energy is generated.

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Answer: Thermal energy in the Earth's interior.