Closed circulation heating system
A heating system and closed cycle technology, which is applied in the field of closed cycle heating systems, can solve the problems of occupying urban space, corrosion, waste of manpower and material resources, etc., and achieve the effects of reducing drilling costs, increasing heat exchange area, and improving heat exchange power
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[0021] The present invention will be further described in detail below in conjunction with the drawings.
[0022] See figure 1 , The closed cycle heating system of the present invention is composed of a downhole part and a ground part.
[0023] The downhole part includes a central main borehole 17 and a first horizontal branch borehole 18 and a second horizontal branch borehole 20 respectively connected to the central main borehole 17, and the first and second horizontal branch boreholes 18, 20 are equipped with slaves. The central main wellbore 17 runs into the insulated pipe 15, and the insulated pipe 15 extends into the bottom 19 of the corresponding horizontal branch wellbore. The inlet of the insulated pipe 15 is connected to the corresponding horizontal branch wellbore, and the outlet of the insulated pipe 15 Connect with the ground part. See Figure 2-3 As shown, the thermal conductivity of the adiabatic tube 15 can reach 0.002W / mk, and the adiabatic tube 15 adopts a vacuu...
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