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Solar concentration disc system with constant focusing capacity

A technology of solar concentrating and concentrating discs, which is applied in the field of solar concentrating disc systems, can solve problems such as the impact of economic benefits, the unfavorable reliability of Stirling engines, and the reduction of system power generation efficiency, so as to achieve favorable efficiency guarantees and favorable equipment reliability Effect

Inactive Publication Date: 2013-04-03
SHANGHAI MICROPOWERS
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  • Abstract
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Problems solved by technology

Since the DNI value of sunlight in a day is constantly changing, without considering the influence of factors such as clouds, the DNI value of sunlight in the morning and afternoon is smaller than that at noon, which makes the solar energy collected by the concentrator be the same in a day. The DNI value changes with the sunlight, that is to say, the traditional solar concentrator system cannot solve the problem that the Stirling engine is always working near the rated power, which reduces the power generation efficiency of the system and affects the economic benefits
In addition, the Stirling engine set operates under variable working conditions, which requires higher peripheral auxiliary equipment. As the DNI value of sunlight changes, related equipment needs to be started frequently to adapt to the change of DNI value. Reliability isn't too bad either

Method used

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  • Solar concentration disc system with constant focusing capacity
  • Solar concentration disc system with constant focusing capacity
  • Solar concentration disc system with constant focusing capacity

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Embodiment Construction

[0023] figure 1 Shown is an embodiment of the present invention, the solar concentrating disc system with constant focusing ability of the present invention is composed of a concentrating disc 1, an adjustable concentrating disc 2, a steering mechanism 3, a control system 7, a column 6, a beam 5 and a support frame 8, etc. The solar concentrating disc system is used to focus solar energy and supply it to the heater of the Stirling thermal power generation device 4. The Stirling engine converts the focused solar thermal energy into mechanical energy through the Stirling cycle, and then passes through the Stirling cycle. The forest engine is connected to a generator that converts the output into electrical energy. It can be seen from the above that the power output of the entire disc-type Stirling thermal power generation system is mainly related to the rated power and efficiency of the Stirling thermal power generation device 4, and the heat transferred to the Stirling engine b...

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Abstract

The invention discloses a solar concentration disc system with a constant focusing capacity. The system comprises a solar concentration disc, a turning mechanism, a control system, a vertical column and a beam. The solar concentration disc comprises a concentration disc with a fixed projected area and an adjustable concentration disc with an adjustable projected area. The adjustable concentration disc is composed of a plurality of small paraboloid-shaped discs which are arranged evenly and radially along the periphery of the concentration disc, each small disc can be rotatably adjusted along a radial axis of the concentration disc to open or close the concentration function; when the small discs of the adjustable concentration disc are opened, and the adjustable concentration disc and the concentration disc meet a same parabolic equation and has a same focus. The system can guarantee that the sunlight total energy concentrated by the system is not affected greatly by the change of sunlight direct normal irradiation values, a Stirling engine unit can operate throughout nearby rated power, and the system has the advantage of high efficiency.

Description

technical field [0001] The invention relates to a solar concentrating optical disc system, in particular to a solar concentrating optical disc system with constant focusing capability. Background technique [0002] The dish-type Stirling solar thermal power generation system is a device that generates high-temperature heat by focusing sunlight to drive a Stirling engine to output electric energy. The power generated by a single unit is generally between 3 and 30kW. Due to the high-efficiency light-gathering ability of the solar concentrating dish system and the high thermoelectric conversion efficiency of the Stirling engine, the dish-type Stirling solar thermal power generation system has special advantages in the field of renewable energy utilization. The dish Stirling solar thermal power generation system is generally composed of a solar concentrating optical disc system, a Stirling thermal power generation device and related auxiliary equipment, among which the solar con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D3/12
Inventor 潘卫明彭小方梁伟青范伟成周建明
Owner SHANGHAI MICROPOWERS
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