Hydrothermal geothermal (middle-deep layer)
Groundwater absorbs geothermal energy in porous or fractured rock formations, and the stored hot water and steam can be used as economical alternative energy sources after proper pumping.
Shallow geothermal energy (shallow layer)
Shallow geothermal energy is a combination of the heat conducted or convected in the earth's surface layer and the heat radiated by solar energy.
Dry hot rock (deep layer)
Dry-hot rock geothermal resources refer to high-temperature rock mass with a general temperature greater than 150℃, a buried depth of several kilometers, no fluid inside or only a small amount of underground fluid.
system design U design cavity |
Second-generation technology research and development of deep U-shaped heat exchange heating system
The softened water system softens tap water and stores it in the water tank, after which the pipeline of the entire system is filled with water via the constant pressure water supply system, and the circulating water pump circulates the water flow in the pipeline. The design principle of this scheme is the same as that of the shallow ground source heat pump, and the water in the system is closed circulation, taking only heat from the underground strata and not groundwater.
U design
The horizontal and directional section designs are used, and the system is connected by multiple branches, primarily to increase the heat exchange area. The precise window opening position should be designed and built in accordance with the formation heat exchange coefficient. The more depth, the better. The ground temperature gradient is typically 3-5°C (the temperature rises by 3°C every 100 meters). To ensure good heat exchange efficiency, the linear and vertical distances of each cavity must be greater than 100 meters, and the horizontal section must use 140 pipe diameter to ensure the water flow in the connected section is as balanced as possible. One cavity is typically designed to be U-shaped through.
cavity
I. To increase the system's heat exchange area, some water will accumulate inside the chamber, and the water inside the chamber will have more heat exchange contact area with the chamber.
II. The purpose of the salt cavern is to save money and increase drilling success rates. The cavity is designed to create a relatively large space at the specified intersection using drilling technology, and then to protect the cavity's wall after docking to form a completely closed capsule. Otherwise, the pipeline connection between the two wells is possible, but the construction is too difficult, the success rate is low, and the cost is prohibitively high.
III. Packet insulation material: above 1000 meters, the ground temperature is relatively low. If it is not insulated, water will lose a lot of heat during circulation.
IV. The water stop ring is located at the end of the shaft wall's thermal insulation material, and its main purpose is to reduce the drop of cold water at the upper part and the heat transfer of high-temperature water at the bottom.
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High efficiency
Low carbon, energy saving and environmental protection
Sustainable
Strong frost resistance and high pressure operation
General purpose
Good looking and easy to use
Service
Heart-level service, customer first
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