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Device and method for collecting solar energy

A technology of solar collectors and solar concentrators, which is applied in the field of solar radiation and solar energy, and can solve problems such as high temperature and increased loss

Active Publication Date: 2007-11-28
深圳超极光新能源有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Vapor systems can operate at moderate temperatures less than 800K, however in some endothermic reactions thermochemistry when trying to obtain high equilibrium constants may require considerably higher temperatures
Unfortunately, as the process temperature increases, the parasitic radiation loss follows Stefan's law (Pr = σεAT 4 ), so that for every doubling of the absolute temperature of the target, the losses due to thermal radiation at the processing temperature increase by a factor of 16

Method used

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  • Device and method for collecting solar energy
  • Device and method for collecting solar energy
  • Device and method for collecting solar energy

Examples

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Embodiment Construction

[0024] Figures 1 and 2 schematically illustrate a prior art solar heat collection system for driving a combined heat engine and generator. Solar heat collection systems provide heat for a variety of purposes where the collected heat is transferred to a heat sink that typically consumes the heat, such as the heat engine shown. The operating temperature will vary depending on the application, and the system will be designed such that once the operating temperature is at the desired temperature (varies from approximately 100°C to 1400°C or more), the collected heat is absorbed absorber.

[0025] In this example, the solar radiation 1 is reflected by the solar concentrator 2 in the sun rays 7 of the sun beam and is focused on the target 8 in the cavity 11 at the focal point of the parabolic concentrator 2 . The target 8 comprises a plurality of metal tubes 3 arranged symmetrically around the main axis 9 of the parabolic solar concentrator 2 to intercept the light cone. In order ...

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PUM

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Abstract

The present invention provides an apparatus for collecting heat from a solar concentrator has an isothermal body defining an elongated cavity with a circular opening having a diameter equal to a diameter of a focus of the solar concentrator, the cavity having a reflective walls such that solar rays contacting the walls are substantially reflected. The circular opening is located at the focus of the solar concentrator and perpendicular to a principal axis of the solar concentrator, and the axis of the cavity is aligned with the principal axis of the solar concentrator. The heat generated in the isothermal body is absorbed by the heat sink. The length of the cavity is sufficient to absorb a desired proportion of the energy in the solar rays entering the cavity and is about 5 to 9 times the diameter of the opening of the cavity. Depending on material used, the isothermal body can be enclosed in a reducing atmosphere to maintain reflectivity of the cavity walls.

Description

technical field [0001] The present invention is in the field of solar energy and, in particular, of the collection of concentrated solar radiation for the purpose of advancing thermochemical, thermomechanical, or other thermal processes. Background technique [0002] Today, there is considerable interest in developing renewable solar thermal energy for many thermally driven processes. These treatments may include thermomechanical treatments in sterling engine or steam turbine power generation systems, thermochemical reforming, thermal cracking, engineered heating, combined heating, material processing, and the like. Solar energy collection systems are generally placed in places where sunlight is easily available. In a typical system, mirrors (either flat or curved) are arranged in a parabolic or trough configuration to concentrate incident solar radiation onto a predetermined target. As the sun moves across the sky, a tracking control system or a pre-programmed algorithm m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/10F03G6/06F24S20/20F24S23/70F24S23/71G02B7/198
CPCF03G6/06F24J2/07F24J2002/003Y02E10/41Y02E10/46F24S20/20F24S2023/88F24S23/70Y02E10/40F03G6/062
Inventor 莫里斯·图赫尔特
Owner 深圳超极光新能源有限公司
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