Solar linear lens zoom tracking system and application

Abstract

The invention discloses a solar linear lens zoom tracking system and application. The system adopts a structural design of an immobile focal line, so that a heat pipe can be used for system heat transfer; and meanwhile, because the focal line is immobile, other solar utilization equipment, such as solar photovoltaic generating equipment, a Sterling generator and equipment with heavy weight can be arranged on the focal line, and the tracking and driving of solar energy can be realized by using a small driving force. The tracking and utilization of the solar energy are realized by adopting a lens, the heat pipe and other photo-thermal conversion devices so as to reduce the cost and improve the efficiency. When various solar lenses of which focuses forms a straight line track the sun, the focal lengths of the solar lenses are kept to be always in the linear region; meanwhile, in the solar tracking process, the solar optical lens moves by taking the straight focal line as an axis instead of the motion by taking the base line of the solar optical lens as the axis in the conventional trench type solar thermal power generation, so that the focal line is ensured to be always immobile in the solar tracking process, namely the focal line is immobile relative to the ground; and the utilization of the solar energy can be realized by arranging the heat pipe or other solar utilization equipment on the focal line. The invention provides the array structure of the solar linear lens zoom tracking system, is suitable for small-scale systems, and is also suitable for solar utilization on a large scale, particularly thermal power generation, heating, cooking, refrigerating and the like by using the solar energy.

Description

technical field [0001] The invention relates to the utilization of solar energy, in particular, the lens is used to realize the linear tracking with the focus of the solar tracking being a straight line and the tracking of an array. Background technique [0002] Solar tracking mainly consists of three types: trough type, tower type and butterfly type. Because the trough type system is one-way tracking, the relative technical difficulty is relatively low. At the same time, due to the solar energy selective coating and vacuum tube technology, it has industrial production in the temperature range of 100-400 degrees. Therefore, it can be mass-produced quickly, and the earliest commercial application in the world is the trough system. [0003] The main tracking method of the trough system in the world is to set a heat exchange tube at the focal line position of the trough system, fill the heat exchange tube with heat transfer oil, and the motor drives the flow of heat transfer oi...

AI Technical Summary

Problems solved by technology

In the process of tracking solar energy, the heat transfer oil moves together in the pipe, and the bellows are used at the heat transfer oil pipe and the outflow end to realize the connection between the moving pipe and the non-moving pipe; because the bellows need high temperature resistance and high reliability, etc. Requirements, so it becomes a key component, and at the same time, this kind of connection cannot guarantee the thermal insulation requirements, so the heat loss of the system is very high

[0004] Chinese patent 200710176966 provides a combined tracking system, which can be used in a trough-type and tower-type tracking system. The tracking method adopts the method of keeping the focus fixed while the solar mirror system moves. It is mainly set on the ground. Two orbits are used for tracking, and the line-focusing system of the trough system uses its linear axis to be placed parallel to the axis of the earth's self-propagation, so it can use rotation in one direction to achieve tracking, but this scheme uses rotation on the ground to achieve trough tracking. Obviously, one-way tracking cannot be realized, so the inventor further set up pitch tracking in the scheme. Such a trough system is not a one-way tracking, but a two-way tracking. Therefore, the inventor did not solve the problem of focal line inconsistency in the one-way tracking of the trough. movement tracking problem

[0005] In recent years, a multi-mirror trough system has been developed in the world. This system is characterized by zoom tracking. Its focal line is set in the area of ​​a cylinder, and its moving device is the rotation axis movement of each mirror. And it basically adopts parallel setting of plane mirrors, but the main reflection tracking technology in this tracking system, and it mainly uses glass plane reflection tracking, and the light-to-heat converter used in it adopts ordinary multi-metal tube system, and has secondary reflection system, so its cost is high and the system is complex

But this kind of tracking is limited to the application of solar thermal power generation, especially the heat exchange tube whose heat exchange device is a metal tube, which limits the application field and scope of this tracking system

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