Earth axis type solar furnace optical collector

Abstract

The invention provides an earth-axis type solar light condenser, which pertains to the heat utilization of solar energy. The solar light condenser traces by an earth-axis single axis, guarantees that the sun light is converged on a fixed point on the extended line of the earth axis during the tracing of sun light, and overcomes the shortcomings of prior light condenser such as complex tracing way and the variable condensed target. The rotary shaft of the light condenser is controlled by a synchronous motor, and traces the solar time angle; when the condensing lens is 45 degree to the rotary shaft, the condensing lens is at its zero; the tilt angle of the condensing lens is adjusted periodically so that the angle change of the condensing lens is half of the change in the declination angle. The shape of the condensing lens is a non-rotary symmetric curve allowing the calibration of astigmatism, for example, a tyre surface, which has light-condensing performance higher than spherical surface and parabolic surface, and the manufacturing way is similar to that for a parabolic surface. The light condenser can meet demands from the people in living, for example, boiled water, radiator and air conditioner, etc. By using a secondary light condenser, a high temperature for industrial production can be achieved, for example hydrogen manufacturing by solar energy, etc.

Description

technical field [0001] The invention relates to the thermal utilization technology of solar energy, which is a concentrating device capable of collecting solar energy and is mainly used for heating. Background technique [0002] Traditional solar furnaces generally use a single parabolic reflector as a concentrator and track the sun through a two-axis drive, always ensuring that the incident direction of sunlight is parallel to the main optical axis, the focus of the concentrator moves with the concentrator, and the receiver is placed at the focus of the concentrator It will inevitably cause the receiver to block the condenser and affect the collection efficiency. At the same time, due to the follow-up of the receiver and the limitation of its own gravity, the scale of the solar furnace is generally small. The parabolic mirror itself is limited by the surface processing accuracy and tracking accuracy. When the lighting area is too large, the light-gathering effect is not id...

AI Technical Summary

Problems solved by technology

[0002] Traditional solar furnaces generally use a single parabolic reflector as a concentrator and track the sun through a two-axis drive, always ensuring that the incident direction of sunlight is parallel to the main optical axis, the focus of the concentrator moves with the concentrator, and the receiver is placed at the focus of the concentrator place and move with it, which will inevitably lead to the occlusion of the receiver to the condenser, affecting the collection efficiency

At the same time, due to the follow-up of the receiver and the limitation of its own gravity, the scale of the solar furnace is generally small

The parabolic mirror itself is limited by the surface processing accuracy and tracking accuracy. When the lighting area is too large, the light-gathering effect is not ideal

In addition, the traditional concentrating equipment adopts dual-axis tracking, the control system is complicated, and the cost is high

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