Elastic pipe bundle vibration reinforced heat exchange solar cavity heat absorber

Abstract

The invention discloses an elastic pipe bundle vibration reinforced heat exchange solar cavity heat absorber. The elastic pipe bundle vibration reinforced heat exchange solar cavity heat absorber comprises a secondary light condenser, a pulsating flow generator, a metal cavity, elastic pipe bundles, a glass plate and a guider; the metal cavity is of a cylindrical structure; the secondary light condenser and the glass plate are mounted in a front end opening of the metal cavity; the glass plate is positioned between the metal cavity and the secondary light condenser; a through hole is formed inthe bottom of the metal cavity; the guider is of a hollow structure, and is provided with a through hole in the side wall; the guider is fixed at the bottom of the metal cavity; an inner cavity of the guider communicates with the through hole in the bottom of the metal cavity; multiple elastic pipe bundles are welded at the bottom of the metal cavity; and the pulsating flow generator is mounted on the front end side wall of the metal cavity. Through the pulsating flow generator, the multiple elastic pipe bundles are vibrated, so that the heat exchange performance can be improved; and the problem of working medium leakage caused by high-temperature hot spot ablation of a traditional heat absorber can be solved, so that the working life and the reliability are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of solar energy concentrating and heat collecting equipment, in particular to a solar cavity heat absorber of elastic tube bundle vibration enhanced heat exchange type. Background technique [0002] Solar energy is a renewable energy that is clean, environmentally friendly, adequately supplied, and widely distributed. Concentrating solar thermal power generation systems can be organically combined with heat storage systems or conventional thermal power stations to achieve continuous and stable power generation. It is an important way to solve the problems of energy shortage and environmental pollution. Concentrating solar thermal power generation technology gathers sunlight energy to the surface of the heat absorber through a large-area concentrator and heats the internal fluid working medium, and then drives the generator set to generate electricity through a thermodynamic cycle process. It is one of the im...

AI Technical Summary

Problems solved by technology

Traditional heat absorbers usually install metal coils (heat exchange of working medium in the tube) in the cavity structure. Due to the high energy density and uneven distribution on the surface of the metal tube, and the limited heat transfer capacity of the flow in the tube, it usually leads to heat absorption. High-temperature hot spots or large temperature gradients are formed in the device, resulting in significant thermal stress, thermal deformation and burning damage, especially the problem of forced shutdown due to working fluid leakage after the metal tube wall is perforated, all of which directly affect the heat absorption The light-to-heat conversion efficiency, operational safety and working life of the device

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