Evacuated collector tube device internally provided with rotors

Abstract

The invention relates to an evacuated collector tube device internally provided with rotors, and belongs to the technical field of solar energy application. The device comprises an evacuated collector tube inner tube, an evacuated collector tube outer tube, rotors, a rotating shaft, fixing parts and supporting parts, wherein the rotors are fixed on the rotating shaft through the fixing parts; the rotating shaft is fixed inside the evacuated collector tube inner tube through the supporting parts; the supporting parts and the evacuated collector tube inner tube are connected and fixed through clamping grooves; a heat conduction fluid impacts blades to drive the blades to rotate, so as to form a vortex flow in the tube for reinforcing heat transmission and scale prevention; the rotating shaft is hollow, so that the weight of the device is reduced; the rotors, the rotating shaft, the fixing parts and the supporting parts are made of alloy or high-temperature resistant macromolecular material. Under the turbulence action of the rotors, a boundary layer is broken, the convection heat transfer between the evacuated collector tube inner tube and the heat conduction fluid is reinforced, the outlet temperature of the heat conduction fluid is increased, scaling in the tube is prevented, and the flowing resistance is small.

Description

Technical field [0001] The invention relates to a vacuum heat-collecting tube device with a rotor inside, in particular to a tube-intensified heat transfer and anti-scaling device applied to a trough-type solar heat-collecting tube, and belongs to the technical field of solar energy applications. Background technique [0002] Energy saving and emission reduction is the theme of today's society, and the utilization and development of solar energy has always been concerned by all walks of life. Trough solar energy is the first solar medium-high temperature heat collector to complete commercial operation. Compared with tower and butterfly solar heat collectors, it has low cost, low environmental impact, high efficiency, and easy maintenance, so its application prospects most expansive. [0003] The trough solar heat collection device is mainly composed of three parts: reflector, vacuum heat collection tube, and energy storage device. Among them, the vacuum heat collection tube...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of low heat exchange efficiency and fouling in the existing vacuum heat collecting tubes, according to the field synergy theory, the present invention provides a low-cost, easy-to-install device for enhancing heat exchange and strong anti-scaling in the tubes. The device consists of a rotor, a shaft, a fixed piece and a support

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