Profiled inner pipe all-glass vacuum solar collector tube
An all-glass, heat-collecting tube technology, applied in solar collectors, solar thermal devices, solar thermal energy, etc., can solve the problem of low resistance to water pressure in the tube, resistance to axial bending, anti-sunburn and bursting, light-receiving surface area and heat transfer area Small, can not be fully utilized in time, etc., to achieve the effect of improving the resistance to water pressure in the pipe, improving thermal efficiency and effective heat utilization rate, and increasing strength
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[0015] Further explain in detail in conjunction with accompanying drawings;
[0016] As shown in Figure 1, there is a vacuum chamber 3 between the outer pipe 1 and the inner pipe 2, the outer surface of the inner pipe 2 has an absorbing coating 4, the positioning steel bracket 5 of the inner pipe 2 is installed in the vacuum chamber 3, and there is The getter 6 has a connection opening 7 at the upper end; the wall of the inner tube 2 is in the shape of a polyhedron.
[0017] As shown in Figure 2, the face of the polyhedral cylinder that the wall of inner tube 2 is is plane, and the radial section of inner tube 2 is equilateral polygonal form, and the intersecting line of adjacent surface is arc transition; The number of faces is preferably more than four sides including four sides; the distance between the peak of the polyhedral cylinder and the inner wall of the outer tube 1 is S, and S must be greater than zero, generally 2 to 6mm. The radial section of the inner tube 2 It ...
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