Recently, some people always ask whether the well of the ground source heat pump can be drilled casually? If you want to understand this problem, you need to start from the well, and the well of the ground source heat pump is actually called a buried hole is more appropriate.
Well drilling construction site
The diameter of the buried hole is generally 10-15 cm, the depth is generally about 120 meters, and the buried hole does not produce water, and there is no need to go down the well pipe. Briefly state the construction process of the buried hole: after the buried hole is laid, it is necessary to bury the U-shaped PE pipe in the buried hole, and use the mud of the hole to backfill a well when drilling the buried hole, and the water is only circulated in the pipe, and no water is taken.
Buried hole PE pipe
So why do some people always say that the ground source heat pump is not allowed to drill wells? Many people confuse the water source heat pump with the ground source heat pump, the water source heat pump needs to drill a well, extract the groundwater through the water pump, and then discharge it to the return well through the heat pump unit, and the one without the return well will be discharged into the sewer and flow away, the water source heat pump will cause groundwater pollution and waste of groundwater, so it is forbidden to use the well of the water source heat pump.
Diagram of a water source heat pump system
Ground source heat pump will not cause groundwater pollution, but also will not waste, is the state vigorously advocated green energy, because of the high construction cost, high requirements for the site, etc., it is more difficult to promote, but the burying hole is not restricted.
Diagram of a ground source heat pump system
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Source: Ground source heat pump and air source
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