The heat exchange station is located in the pilot test base of Xiong'an Science and Technology Innovation Center. In Niujie Township, Eryuan County, Dali, Yunnan, local residents use geothermal water to heat eggs. In hot weather, indoor cooling depends not on blowing air conditioners, but on Geothermal energy hidden underground - have you heard of such applications? Recently, our reporter went to Xiong'an, Hebei, Xianyang, Shaanxi, Dali, Yunnan and other places, and found that in addition to refrigeration, Geothermal energy is also locally developed for clean heating in northern areas; In some areas with abundant geothermal resources, geothermal water helps develop the local hot spring health industry; In some areas with high-temperature Geothermal energy resources, Geothermal energy is used as power generation power source to "cooperate and help each other" with other energy sources to ensure stable power consumption. How can the thermal energy buried underground be excavated and used by people? How is the development of China's Geothermal energy industry at present? It can provide heat as well as refrigeration. Geothermal resources play an important role in ensuring people's livelihood. At the talent home heat exchange station of Sinopec Lvyuan Company located in Xincheng Community, Xiongxian County, Xiong'an, Hebei Province, the head of the station, Zhang Hu, is busy "doing physical examination" for the equipment. We need to do a good job in maintaining the heat exchange equipment before the heating season, such as rust removal, cleaning, oil lubrication, etc., to ensure smooth heating in winter, "said Zhang Hu. This underground heat exchange station covers a small area but ensures winter heating for over 3000 households in the community. The source of heating is the Geothermal energy buried underground. The so-called Geothermal energy refers to the thermal energy that exists in the earth's interior rock and soil mass, fluid and magma body and can be developed and utilized for human beings. According to the burial depth, Geothermal energy is generally divided into shallow Geothermal energy, hydrothermal geothermal resources and dry hot rocks. From the Earth's surface down to about 200 meters, there are shallow geothermal resources; The thermal energy within a depth range of 200 to 3000 meters underground and existing in the form of hot water is a hydrothermal resource; Dry hot rocks are buried below 3000 meters underground. Geothermal energy is "hidden" so deep, how can we dig it out for people to use? Industry insiders introduce that this first involves exploration technology. Just like searching for oil and gas underground, we should first judge whether there is "or not" to exploit geothermal resources, and use seismic exploration and other means to calculate the location of Geothermal energy through the velocity curve of Seismic wave transmission in different rock layers. Subsequently, through geothermal drilling technology, geothermal resources such as high-temperature water underground are brought to the surface for utilization. "In our heat exchange station, the geothermal water is extracted by a Submersible pump, enters the cyclone desander for desanding, and then comes to the plate heat exchanger for heat exchange, that is, the 'heat' of the high-temperature underground water is extracted to be used as a heat source for winter heating." Zhang Hu told our reporter that the heat "exchanged" by geothermal water is transported to residents' homes through root pipes. Compared with traditional heating methods such as burning coal, heating with Geothermal energy is not only environmentally friendly, but also economical. Cui Wenxiu, a resident of Xincheng Community, told reporters that he used to live in the village and mainly relied on burning coal for heating. He often had to wake up in the middle of the night to add coal. "The air is full of coal ash, and the nostrils are black with smoke." She said, "After using geothermal energy for heating, the temperature in the house can reach more than 20 degrees Celsius in winter, and it is not cold to walk on the floor barefoot. Our house is 103 square meters, and it is heated in a heating season