Doomsday Bunker Upgrade Chapter 229: Deep geothermal

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Deep geothermal is an emerging energy technology that began to be researched in the Commonwealth around the 1970s.

The main principle is to guide the heat contained in the dense and impermeable high-temperature rock at a depth of 2000~3000 meters underground to the surface through drilling, water injection and other means, and apply it to heating, power generation and other fields.

This technology is favored for its low cost, clean and recyclable and many other advantages. It has been popularized and applied in many countries with rich geothermal resources. However, limited by the speed of technological development, the technology It was not until this century that a relatively mature utilization system was formed.

"The utilization of deep geothermal energy in my country started late, and it has only formed a considerable scale after the technology has matured in recent years." The person in charge seems to know a lot about this area, and he is also talking about it when talking to Chen Xin: "A few years ago, a new national district in Chang'an adopted this deep geothermal well as a heating method. It is a successful case of my country's utilization of deep geothermal resources. After that, high-temperature dry hot rocks were produced in Qinghai. my country is leading the world in this area. top."

"Did my country only begin to use deep geothermal heat in these years? But I remember that when I was in elementary school, the Yangbajing in Tibet should have been built for geothermal power generation? Isn't that counted as deep geothermal resource development?" Chen Xin is a little strange. In his impression, Yangbajing was already very famous when he was still in elementary school.

Faced with this problem, the person in charge shook his head with a smile, and then explained: "Yangbajing in Tibet is a medium-temperature shallow geothermal field. The geothermal resources there are basically ready-made, and there is no need to drill deep wells. What can be used. But the Yangbajing geothermal power generation is indeed quite early. Megawatt-level geothermal power generation was realized in the 1990s, and it can be regarded as a famous case of geothermal development."

"It turns out that shallow geothermal heat and deep geothermal heat are indeed not the same thing." Chen Xin nodded clearly, with a sense of sudden realization, but he continued to ask: "The high temperature and dry heat produced by Qinghai Yan, is this available value high? Is the country's technology mature in this regard?"

Chen Xin is very concerned about this issue. If the country has ready-made technology, then his idea of ​​building energy towers to build greenhouses or even district heating fields will be more easily realized.

"Haha, you are just asking!" For this question, the person in charge seemed to be scratched to the itch. The whole person became excited, adjusted his sitting posture, and took a sip of alcohol, obviously intending Talk to Chen Xin well.

Seeing this, Chen Xin also made a gesture of listening carefully, wanting to learn more about this knowledge.

“my country’s total geothermal utilization has been ranked first in the world for many years, but it mainly focuses on the utilization of shallow, medium and low temperature geothermal resources. For deep geothermal resources, on the one hand, there is a lack of relevant technologies, and on the other hand, there is insufficient resource exploration. It is only in recent years that the country has made many breakthroughs in this regard." Speaking of which, the person in charge had a sigh of relief, not only sighing: "Geothermal resources are a good thing! Its application cost is lower than that of solar and wind energy. There are more, clean and environmentally friendly, with huge reserves!

Especially in my country, the resources of hot dry rock at a depth of 3 to 10 kilometers in the mainland are about 856 trillion tons of standard coal, accounting for about 1/6 of the world's resources. Energy research and development, until the discovery of hot dry rock resources in the Qinghai-Tibet Plateau, filled the gap that my country has not discovered hot dry rock resources. "

"If this is the case, why didn't the country consider large-scale mining of hot dry rocks and use deep geothermal heat to build shelters to avoid this crisis?" Chen Xin felt strange. According to the person in charge, dry heat Rock resources are easy to mine and the application cost is low. It stands to reason that the country should mine on a large scale. Why is it still burning coal now?

For this question, the person in charge smiled wryly: "Don't you want to be a country? The southern Qinghai-Tibet Plateau accounts for about 1/5 of the total resources of dry and hot rocks in mainland China. The country is building planting and breeding areas on the Qinghai-Tibet Plateau. , the plan is to use geothermal heat for heating and power generation, but the construction environment on the plateau is too harsh, and the plan is very slow.

In addition, the hot dry rock resources are mainly distributed in the Qinghai-Tibet Plateau, Songliao Basin, Bohai Bay Basin, and the southeast coast. Now, in addition to the Qinghai-Tibet Plateau, the Songliao Basin, the Bohai Bay Basin and the southeast coast are all The rising sea level is covered by ice. Under such circumstances, it is difficult to develop and apply deep geothermal resources on a large scale. "

Hearing the words of the person in charge, Chen Xin also nodded clearly. The sea water has been poured into Dongting Lake, and the Shandong Peninsula has become Shandong Island. Now, it is obvious that the geothermal resources in the coastal areas are still being developed under this circumstance. Not very practical.

Although there are many difficulties in this regard, the prospects for the utilization of deep geothermal energy are still broad.

Chen Xin thought about it for a while and said, "Since the country has the technology in this area, it shouldn't be a problem for me to use geothermal resources to build a greenhouse for planting, right?"

"This is really hard to say." The person in charge shook his head and filled Chen Xin's glass with wine. Then he continued: "The deep geothermal technology currently used in the country is mainly used for the development of hot dry rock. , that is, impermeable rock formations that contain no fluid or a small amount of fluid.

Specifically, by injecting water into deep wells to open up fissures~IndoMTL.com~, a planar artificial dry-hot rock heat storage structure is formed, and heat is extracted through the recovery of high-temperature water and steam. This technology has requirements for the geological structure. In places like Hunan Province, groundwater resources are too rich. If you want to exploit deep geothermal resources, technical changes must be made. There are many problems in this! "

"Let me solve the technical problems. As long as I can put up the shelf, I have a way to make it practical." Chen Xin didn't think it was a problem for this problem.

With the backing of the system, it is not difficult to mine deep geothermal energy.

"I forgot that Mr. Chen, what you are best at is the improvement of technology!" The person in charge laughed and patted his head for fear. This was a guarantee: "Since Mr. Chen you have such an idea, I naturally I am willing to give full support. Later, I will report this situation with the higher authorities, and try to set up a pilot program here. At that time, Mr. Chen will still need you to improve the technology.

If this can be done, the development technology of deep geothermal resources can be promoted on a large scale, which is a great thing for the benefit of the country and the people! "

"Then I'll wait and see!" Chen Xin raised his glass and touched the person in charge again.