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Fresnel medium-high temperature solar heat collecting device

A solar heat collection, medium and high temperature technology, applied in solar thermal devices, solar collectors, solar thermal energy, etc., can solve the problems of reducing reflection efficiency, affecting reflection effect, increasing costs, etc., achieving high cost performance, improving heat collection efficiency, cost saving effect

Inactive Publication Date: 2011-07-06
CHENGDU ANRUIDA TECH
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

The usual Fresnel reflector uses the serrated surface as the light-facing surface. The disadvantage is that it is easy to deposit dust in the outdoor environment for a long time and affect the reflection effect.
The existing solution is to add a set of light-transmitting flat protective cover on the reflector; the disadvantage of this is to increase the cost and reduce the reflective performance

Method used

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Embodiment

[0027] Such as figure 1 As shown, the present invention is mainly composed of a mounting base 1 and a receiver 2 arranged on the top of the mounting base 1. A Fresnel line focusing reflector is arranged below the receiver 2 to form a main reflector 4. The main reflector The serrated surface of 4 is a coating layer, and the other side is a sunny surface. The material of the main reflector 4 can be transparent polymethyl methacrylate (PMMA) or glass, etc., and the concentration ratio is between 50 and 100; the present invention With this structure, since the light surface of the main reflector 4 faces the sunlight, the problem of dust accumulation caused by the tooth surface facing the sunlight is effectively overcome, the heat collection efficiency of the system is improved, and the maintenance cost is reduced.

[0028] The main reflector 4 is mainly assembled by at least two Fresnel line focusing reflectors, and all Fresnel line focus reflectors are located in the same plane. ...

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Abstract

The invention discloses a Fresnel medium-high temperature solar heat collecting device which mainly comprises a mounting seat (1) and a receiver (2) arranged at the upper end of the mounting seat (1). A Fresnel line focus reflecting mirror is arranged below the receiver (2) to form a main reflecting mirror (4), the toothed surface of the main reflecting mirror (4) is a coating layer, and the other side is a sunward surface. The Fresnel medium-high temperature solar heat collecting device can realize that medium-high temperature solar heat can be collected, and has the advantages of improved heat collection efficiency, light and ingenious structure, and reduced manufacturing cost and maintenance cost.

Description

technical field [0001] The invention relates to a solar heat collecting device, in particular to a Fresnel medium-high temperature solar heat collecting device. Background technique [0002] Energy shortage and environmental problems have gradually become a major bottleneck restricting the long-term development of my country and the world economy and society. In order to solve this problem, in addition to vigorously carrying out energy conservation and scientific energy use and striving to develop fossil fuels, the development and utilization of renewable energy must be accelerated. The development and utilization of renewable energy plays a very important role in optimizing the energy structure, protecting the environment, reducing greenhouse gas emissions, and coping with climate change. In this regard, solar energy plays a particularly important role. Solar energy is a clean, abundant and renewable resource. Solar energy is the most abundant and widely available form of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/38F24J2/10F24J2/54F24S23/70
CPCY02E10/47
Inventor 胡江怡屈万泽张仲秋
Owner CHENGDU ANRUIDA TECH
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