Linear Fresnel reflection type mid-and-low temperature solar energy thermochemical utilization device

Abstract

A linear Fresnel reflection type mid-and-low temperature solar energy thermochemical utilization device comprises a linear Fresnel reflection condensing mirror array driven by a solar tracking device to real timely track the sun, and a thermal absorber matched with the condensing mirror array and independently arranged, wherein the thermal absorber is tubular, a selective absorption coating is coated on the surface of the outer wall, and a chemical reactant medium and a catalyst are filled in the tube; a solar energy light-focusing system formed by the Fresnel reflection condensing mirror array and the solar tracking device is adopted and is well matched with the hot grade of thermal chemical reaction of mid-and-low temperature fossil fuel, the structure is simple, the manufacturing and running cost is low and the wing resistance is good when the solar energy thermochemical utilization device is mounted close to the ground; with the chemical reactant medium and the catalyst in the thermal absorber, the solar energy thermochemical utilization device can serve as the thermochemical reaction place while absorbing the solar energy, so that the heat can be directly absorbed and utilized, and the system integration complexity and energy transfer loss can be effectively reduced; as the thermal absorber is independently arranged, the safety and the stability are higher during the heat absorption and reaction process.

Description

technical field [0001] The invention relates to the technical field of solar heat utilization, in particular to a linear Fresnel reflection type medium and low temperature solar thermochemical utilization device. Background technique [0002] With the rapid growth of the national economy, the demand for energy is increasingly strong, and the problems of energy shortage and environmental pollution caused by fossil energy are becoming more and more serious. As an ideal renewable energy, solar energy has the characteristics of inexhaustibility and inexhaustibility. It is recognized as an important clean energy for the sustainable development of human society and will become one of the most important forms of renewable energy utilization in the future. Among them, solar thermal power generation technology is a safe and reliable high-grade green renewable energy technology with broad application prospects, and it has become a consensus at home and abroad to accelerate its large-s...

AI Technical Summary

Problems solved by technology

[0004] At present, the thermochemical utilization of solar energy or thermochemical power generation is mainly concentrated in the relatively high temperature range of 500-1200°C and above, and the technical realization mostly relies on high concentration ratio solar heat collectors, high-performance solar thermochemical reactor structural materials and efficient and stable catalysts At the level of research and development, there are still technical problems such as violent chemical reactions, low efficiency of solar energy conversion and utilization, and expensive equipment, which makes the overall utilization cost high and it is difficult to achieve low-cost and large-scale application in the short term

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