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High-efficiency solar integrated line focusing medium-temperature heat collector

A solar energy and line focusing technology, applied in the field of solar thermal utilization, can solve the problem of low heat exchange efficiency of cavity absorbers, and achieve the effects of preventing heat radiation loss, uniform heating and reducing heat loss

Inactive Publication Date: 2015-03-11
YUNNAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the existing trough-type line-focusing heat collectors, and provide a high-efficiency solar energy integrated line-focusing medium-temperature heat collector, which combines the advantages of vacuum tubes and cavity heat collectors, and not only solves the problem of cavity The problem of low heat transfer efficiency of the absorber also solves the problem of convective heat transfer loss at the opening, and the structure is firm and the cost is low, which effectively improves the heat collection efficiency of the trough concentrator system for solar energy

Method used

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  • High-efficiency solar integrated line focusing medium-temperature heat collector
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  • High-efficiency solar integrated line focusing medium-temperature heat collector

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Effect test

Embodiment 1

[0021] The high-efficiency solar energy integrated line-focusing medium-temperature collector directly generates steam: the sunlight reflected by the parabolic concentrator passes through the glass casing 1 and is projected to the center of the opening of the metal cavity absorber 2, and is reflected by the metal cavity absorber after multiple reflections. The outer surface of the opening of 2 absorbs and converts heat energy, the air in the glass casing 1 is heated and expands, and the air pressure increases, the exhaust pipe 6 is opened to discharge part of the hot air until the air pressure inside and outside the glass casing 1 is balanced, the exhaust pipe 6 is closed, and the water flows from the One end of the metal cavity absorber 2 enters, absorbs the heat collected by the metal cavity absorber 2 during the flow process and vaporizes into water vapor at 120°C, and the water vapor is discharged from the other end of the metal cavity absorber 2 through Use it when needed....

Embodiment 2

[0023] High-efficiency solar energy integrated line-focusing medium-temperature collector produces high-temperature heat-conducting oil: the sunlight reflected by the parabolic concentrator passes through the glass casing 1 and is projected to the center of the opening of the metal cavity absorber 2, and is absorbed by the metal cavity after multiple reflections The outer surface of the opening of the device 2 absorbs and converts heat energy, the air in the glass sleeve 1 is heated and expands, and the air pressure increases, the exhaust pipe 6 is opened to discharge part of the hot air until the air pressure inside and outside the glass sleeve 1 is balanced, and the exhaust pipe 6 is closed to conduct heat. The oil enters from one end of the metal cavity absorber 2, absorbs the heat collected by the metal cavity absorber 2 during the flow process, and the temperature rises to above 200°C, and the heat transfer oil is discharged from the other end of the metal cavity absorber 2...

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Abstract

The invention relates to a high-efficiency solar integrated line focusing medium-temperature heat collector, comprising a metal cavity absorber, a glass sleeve, an aerogel composite thermal insulation layer and a joint component, wherein the side surface of the metal cavity absorber is enclosed into the glass sleeve after being coated by the aerogel composite thermal insulation layer; the contact surfaces of the metal cavity absorber, the glass sleeve and the aerogel composite thermal insulation layer are fixed by virtue of a high-temperature inorganic adhesive; the joint component is used for clamping two ends of the glass sleeve and the metal cavity absorber, and is divided into two modules; an exhaust hole is formed in one module and is used for installing an exhaust pipe; a high-temperature resistant gasket is cushioned between the glass sleeve and the joint component; four threaded holes are formed in the joint component; after the heat collector is installed, the center of an opening of the metal cavity absorber is positioned on a focal plane of a parabolic concentrator. The high-efficiency solar integrated line focusing medium-temperature heat collector disclosed by the invention is low in demand on fabrication process, low in initial investment cost, low in post-maintenance cost, and convenient to manufacture and install, and can be widely applied.

Description

technical field [0001] The invention relates to a solar heat collector, in particular to a high-efficiency solar energy integrated line-focusing medium-temperature heat collector, which belongs to the technical field of solar light and heat utilization. Background technique [0002] In just over two hundred years since the first industrial revolution, human society has rapidly consumed fossil fuels such as coal, oil, and natural gas that the earth has accumulated over hundreds of millions of years. The use of these fossil fuels has resulted in a large amount of carbon and sulfur , nitrogen and other elements are emitted to the earth's surface and atmosphere, breaking the balance of the entire biosphere. At present, traditional fossil fuels are already facing depletion, and environmental problems are still deteriorating. If this continues, human beings will gradually fall into trouble. Therefore, countries all over the world are vigorously developing clean and renewable energ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/00F24J2/24F24J2/46F24J2/51F24S10/70
CPCY02E10/44
Inventor 李明冯志康罗熙洪永瑞常伟庄滨玮冀孟恩
Owner YUNNAN NORMAL UNIV
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