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Solar power concentrating system

Inactive Publication Date: 2012-01-19
MITAKA KOHKI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0004]In consideration of the related art, the present invention provid

Problems solved by technology

In addition, the high-temperature receiver radiates heat, to deteriorate thermal efficiency.

Method used

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Experimental program
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first embodiment

[0011]FIGS. 1 to 3 are views illustrating the first embodiment of the present invention. At the center of a solar concentrating system according to the present embodiment, four supports 1 having a predetermined height (about 10 m) are uprightly arranged. Around the supports 1, there are a plurality of heliostats 2 to follow the sun T and reflect sunlight L toward a single target position P.

[0012]The tops of the four supports 1 support a stationary receiver 3. The receiver 3 has an inverted container shape (inverted pot shape) having an opening 4 at a lower side thereof and a predetermined inner space. The receiver 3 is generally made of black carbon material and an inner face thereof is covered with a silicon carbide (SiC) film. Accordingly, the color of the inner face of the receiver 3 is black to realize a very high absorptance for the sunlight L. Nearly at the center of the opening 4 of the receiver 3, the virtual target P of the heliostats 2 is positioned.

[0013]Formed around the...

second embodiment

[0025]FIG. 4 is a view illustrating the second embodiment of the present invention. The present embodiment has components that are similar to those of the first embodiment. The similar components are represented with common reference marks to omit a repetition of explanation.

[0026]According to the present embodiment, the shape of a receiver 10 is cylindrical having a top face, like a housing 5. The receiver 10 that is cylindrical and has the top face is easy to form. The diameter of an opening 11 is larger than that of the preceding embodiment, and therefore, components of sunlight L going outside due to reflection may slightly increase. The larger opening 11, however, is capable of receiving sunlight L even if an accuracy of collecting sunlight from heliostats is low. The height of the cylindrical shape of the receiver 10 may be increased to decrease a solid angle from an incident point on an inner face of the receiver 10 to the opening 11, so that sunlight L scattered by the inner...

third embodiment

[0027]FIG. 5 is a view illustrating the third embodiment of the present invention. The present embodiment has components that are similar to those of the above-mentioned embodiments. The similar components are represented with common reference marks to omit a repetition of explanation.

[0028]According to the present embodiment, a receiver 12 is integrally formed with a housing 13. The housing 13 is divided into an upper member 14 and a lower member 15 that are welded together with peripheral flanges 14f and 15f. The receiver 12 has an inverted container shape with a narrow opening 16, like that of the first embodiment. The receiver 12 is integrally and continuously formed from a bottom face of the lower member 15 from the same material. A smoke vent 7 is formed from the upper member 14 and is passed through and welded to an upper part of the receiver 12.

[0029]According to the present embodiment, water W is used as a heating fluid. The water W is supplied into an inlet 8 and is passed...

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Abstract

An outer side of a receiver is covered with a housing, so that the receiver is not exposed to the open air and no heat of the receiver is taken by winds, to improve thermal efficiency. Although the outer side of the receiver is covered with the housing, a lower side thereof has an opening, so that sunlight reflected by heliostats is introduced through the opening to the inside of the receiver and is surely received by an inner face of the receiver.

Description

TECHNICAL FIELD [0001]The present invention relates to a solar power concentrating system.BACKGROUND TECHNOLOGY [0002]A known solar power concentrating system arranges a receiver at the top of a tower installed on the ground, and on the ground around the tower, sets a plurality of heliostats that follow the sun. The heliostats follow the sun and reflect sunlight toward the stationary receiver. The sunlight reflected by the plurality of heliostats concentrates in the receiver to make the receiver high temperature. Inside the receiver, there is a path to pass a heating fluid (for example, molten salt). Passed through the inside of the receiver, the heating fluid becomes high temperature. The high-temperature heating fluid is circulated through a place that needs heat (for example, a steam generator). In this way, the heating fluid transfers the heat of the receiver. A related document is, for example, U.S. Pat. No. 4,227,513.SUMMARY OF INVENTION [0003]According to the related art, the...

Claims

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Application Information

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IPC IPC(8): F24J2/26F24J2/46F24J2/48F24S10/75F24S23/79
CPCF24J2/07Y02E10/41F24J2002/1076F24J2/464F24S20/20F24S80/40F24S2023/87Y02E10/40
Inventor NAKAMURA, KATSUSHIGE
Owner MITAKA KOHKI
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