Geothermal wells refer to methods and devices for generating electricity using geothermal energy or hot spring water with a water temperature above 30°C at a well depth of approximately 3,500 meters. Geothermal heat is divided into three categories: high temperature, medium. and low temperature. Above 150℃, it exists as vapor, which is high temperature geothermal heat; between 90℃ and 150℃, it exists as a mixture of water and steam, which is medium temperature geothermal heat; above 25℃ and below 90℃, it is in the form of warm water, warm water, etc. It exists in the form of hot water, hot water, etc., which belongs to low temperature geothermal heat. On March 12, 2010, a geothermal well was successfully drilled in Fengheying Village, Daxing District, Beijing. The measured temperature reached 103°C,breaking Beijing's geothermal water temperature record and becoming the first medium-temperature geothermal well in Beijing.
Main uses
1. Most people will think of hot spring baths first, and there is much more to geothermal heat than just these uses. Geothermal energy is divided into three categories: high temperature, medium temperature and low temperature. Above 150℃, it exists as vapor, which is high temperature geothermal heat; between 90℃ and 150℃, it exists as a mixture of water and steam, which is medium temperature geothermal heat; above 25℃ and below 90℃, it is in the form of warm water, warm water, etc. It exists in the form of hot water, hot water, etc., which belongs to low temperature geothermal heat.
2. High temperature geothermal energy is suitable for power generation, medium temperature geothermal energyn temperature can produce electricity and can also be used for home heating. Low temperature geothermal energy can be used for bathing, medical treatment, heating, greenhouse planting, aquaculture, etc.
3. Consider using it for electricity generation first. Geothermal power plants using medium-temperature geothermal water as energy are not uncommon abroad. A unit using geothermal water at 72°C to produce electricity has been built in Alaska, United States. There is also a medium temperature power plant in Tengchong, Yunnan, China.
4. Geothermal wells can also be used for heating. In addition to being environmentally friendly and energy efficient, geothermal heating is technically simple and easy to implement, and has a wide range of temperature requirements. It can be used in a pltemperature range from 15°C to 180°C. Underground hot water at 103°C can be directly used for heating services without heating.
5. Geothermal energy must be used in a “cascading” manner, so that geothermal resources can be “fully utilized.” The first stage is used for heating, the second stage is sent to the hot source; fishing center to provide underfloor heating; The third stage is aquaculture, then it is conducted to the hot spring planting and picking base for planting and irrigating special vegetables, flowers and various fresh fruits, and then it is discharged into the lake hot ; spring park so that it does not freeze in winter and the green water is always clear.