[go: up one dir, main page]

US20120012102A1 - Solar power concentrating system - Google Patents

Solar power concentrating system Download PDF

Info

Publication number
US20120012102A1
US20120012102A1 US13/259,697 US201013259697A US2012012102A1 US 20120012102 A1 US20120012102 A1 US 20120012102A1 US 201013259697 A US201013259697 A US 201013259697A US 2012012102 A1 US2012012102 A1 US 2012012102A1
Authority
US
United States
Prior art keywords
receiver
housing
concentrating system
solar concentrating
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/259,697
Inventor
Katsushige Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitaka Kohki Co Ltd
Original Assignee
Mitaka Kohki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitaka Kohki Co Ltd filed Critical Mitaka Kohki Co Ltd
Assigned to MITAKA KOHKI CO., LTD. reassignment MITAKA KOHKI CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NAKAMURA, KATSUSHIGE
Publication of US20120012102A1 publication Critical patent/US20120012102A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/40—Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S2023/87—Reflectors layout
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

Definitions

  • the present invention relates to a solar power concentrating system.
  • 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.
  • the receiver is exposed to the open air at the tall position, and therefore, winds take heat from the receiver.
  • the high-temperature receiver radiates heat, to deteriorate thermal efficiency.
  • the present invention provides a solar concentrating system capable of improving thermal efficiency.
  • the solar concentrating system has a receiver installed at a predetermined height and heliostats arranged on the ground around the receiver, to reflect sunlight toward the receiver.
  • the receiver has an inverted container shape having at a lower side thereof an opening to introduce sunlight.
  • a housing is arranged on an outer side of the receiver, surrounds the receiver except the opening, and defines a space for a heating fluid defined between the housing and the receiver
  • FIG. 1 is a general perspective view illustrating a solar concentrating system according to a first embodiment of the present invention
  • FIG. 2 is a sectional view illustrating the solar concentrating system
  • FIG. 3 is a sectional view illustrating a receiver
  • FIG. 4 is a sectional view illustrating a receiver according to a second embodiment of the present invention.
  • FIG. 5 is a sectional view illustrating a receiver according to a third embodiment of the present invention.
  • FIGS. 1 to 3 are views illustrating the first embodiment of the present invention.
  • a solar concentrating system according to the present embodiment, four supports 1 having a predetermined height (about 10 m) are uprightly arranged.
  • 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.
  • 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.
  • the virtual target P of the heliostats 2 is positioned.
  • a cylindrical housing 5 having a top face.
  • the housing 5 is made of metal and has an inner face provided with a mirror coating 6 .
  • the housing 5 and receiver 3 are connected to each other at lower parts thereof and a space S is defined between them to pass air A serving as a heating fluid.
  • a cylindrical smoke vent 7 is formed at the center of the top face of the housing 5 .
  • a lower end of the smoke vent 7 passes through the top of the receiver 3 to make the inside of the receiver 3 and the outside of the housing 5 communicate with each other.
  • the diameter of the smoke vent 7 is small to discharge smoke created inside the receiver 3 to the outside little by little and not to discharge a large amount of air from the inside of the receiver 3 to the outside.
  • an inlet 8 for the air A is formed at a lower part of a side face of the housing 5 .
  • An outlet 9 is formed at a position opposite to the inlet 8 .
  • the sunlight L reflected by the heliostats 2 is introduced through the opening 4 .
  • the sunlight L is once concentrated at the target P and is diffused to hit the inner face of the receiver 3 .
  • the inner face of the receiver 3 is black to realize a high absorptance for the sunlight L, and therefore, the receiver 3 becomes high temperature. Even if the receiver 3 becomes high temperature, the receiver 3 is made of solid carbon material with the inner face coated with the silicon carbide film, and therefore, the receiver 3 has excellent thermal resistance not to break by heat.
  • the inner face of the receiver 3 may partly reflect the sunlight L.
  • the diameter of the opening 4 of the receiver 3 is smaller than the diameter of the inner space thereof and a solid angle from each incident point on the inner face to the opening 4 is small, so that the sunlight L hardly escapes outside.
  • components of the sunlight L scattered by the inner face of the receiver 3 mostly advance toward the depth of the inner space to hit the inner face and be absorbed thereby.
  • smoke may sometimes be produced in the receiver 3 .
  • the smoke is discharged through the smoke vent 7 , so that no smoke will present to block the sunlight L, and therefore, the sunlight L surely reaches the inner face of the receiver 3 .
  • the space S On an outer side of the receiver 3 that is at high temperature due to absorption of the sunlight L, there is the space S in which the air A serving as a heating medium flows.
  • the air A comes in contact with the outer face of the receiver 3 , is heated thereby, and circulates heat to a place that needs the heat.
  • the outer side of the receiver 3 is covered with the housing 5 so that the receiver 3 is not exposed to the open air. This prevents heat of the receiver 3 from being taken by winds and improves thermal efficiency.
  • the opening 4 is formed at the lower side of the receiver 3 , and therefore, the sunlight L reflected by the heliostats 2 is introduced through the opening 4 to the inside of the receiver 3 and is surely absorbed by the inner face of the receiver 3 .
  • the receiver 3 has an inverted container shape having the opening 4 at the lower side thereof, and therefore, air A heated in the receiver 3 stays inside the receiver 3 to maintain the receiver 3 at high temperature.
  • the heated air A tends to move upward, and therefore, if the opening 4 is formed at an upper side of the receiver 3 , the heated air A will cause an upward flow to escape from the receiver 3 , and in place thereof, cold air A will enter the receiver 3 to cool the receiver 3 and deteriorate thermal efficiency. This will not happen according to the present embodiment.
  • the inner face of the housing 5 is provided with the mirror coating 6 to form a reflector. As a result, high-temperature radiation from the receiver 3 is reflected toward the receiver 3 , thereby a heat radiation out from the receiver 3 is effectively suppressed.
  • the receiver 3 only the inner face of the receiver 3 is provided with a silicon carbide (SiC) film. Instead, the receiver 3 may entirely be covered with a silicon carbide (SiC) film.
  • the outer face of the receiver 3 may be made undulated.
  • 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.
  • 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 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 face may advance toward the depth of an inner space of the receiver 10 , to improve a sunlight absorbing efficiency.
  • 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.
  • 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 14 f and 15 f.
  • 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 .
  • water W is used as a heating fluid.
  • the water W is supplied into an inlet 8 and is passed through a space S, thus the water W comes in contact with the receiver 12 and is heated thereby and hot water W is taken out of an outlet 9 .
  • the receiver 12 is integrally formed as part of the housing 13 , and therefore, no gap is present between them. This is appropriate for passing a liquid such as water W as a heating fluid.
  • water W is used as a heating fluid.
  • a liquid such as oil is employable.
  • An inner face of the receiver 12 may be coated with a heat-resistant black coating.
  • the outer side of the receiver is covered with the housing, and therefore, the receiver is not exposed to the open air. This prevents heat of the receiver from being taken by winds and improves thermal efficiency.
  • the opening is formed at a lower side of the receiver. Accordingly, sunlight reflected by the heliostats is introduced through the opening to the inside of the receiver and is surely received by the inner face of the receiver. Between the receiver and the housing, the space for a heating fluid is formed so that the heating fluid introduced into the space comes in contact with the outer face of the receiver and is heated thereby.
  • the receiver has an inverted container shape with the opening formed at the lower side thereof, so that air heated in the receiver stays therein to maintain the receiver at high temperature.
  • the diameter of the opening of the receiver is smaller than the diameter of the inside of the receiver to reduce a solid angle. Accordingly, sunlight introduced into the receiver and reflected by the inner face of the receiver will rarely escape outside through the opening.
  • the receiver is made of solid silicon carbide, or solid silicon carbide entirely covered with a silicon carbide film.
  • the inner face of the receiver is black due to the silicon carbide film, to improve a sunlight absorptance.
  • At least the surface of the receiver is formed with a silicon carbide film, to provide excellent heat resistance.
  • the inner face of the housing is provided with a mirror coating. If the heating fluid is a transparent gas such as air, the mirror coating reflects radiation from the high-temperature receiver back to the receiver, thereby preventing heat radiation from the receiver.
  • the heating fluid is a transparent gas such as air
  • the receiver is integrally formed from part of the housing, to produce no gap between them. This is appropriate when the heating fluid is a liquid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

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
  • The present invention relates to a solar power concentrating system.
    • BACKGROUND TECHNOLOGY
  • 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
  • According to the related art, the receiver is exposed to the open air at the tall position, and therefore, winds take heat from the receiver. In addition, the high-temperature receiver radiates heat, to deteriorate thermal efficiency.
  • In consideration of the related art, the present invention provides a solar concentrating system capable of improving thermal efficiency.
    • Means to Solve the Problems
  • According to an aspect of the present invention, the solar concentrating system has a receiver installed at a predetermined height and heliostats arranged on the ground around the receiver, to reflect sunlight toward the receiver. The receiver has an inverted container shape having at a lower side thereof an opening to introduce sunlight. A housing is arranged on an outer side of the receiver, surrounds the receiver except the opening, and defines a space for a heating fluid defined between the housing and the receiver
    • BRIEF DESCRIPTION OF DRAWINGS
  • FIG. 1 is a general perspective view illustrating a solar concentrating system according to a first embodiment of the present invention
  • FIG. 2 is a sectional view illustrating the solar concentrating system
  • FIG. 3 is a sectional view illustrating a receiver
  • FIG. 4 is a sectional view illustrating a receiver according to a second embodiment of the present invention
  • FIG. 5 is a sectional view illustrating a receiver according to a third embodiment of the present invention
    •  MODE OF IMPLEMENTING INVENTION First Embodiment
  • 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.
  • 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.
  • Formed around the receiver 3 is a cylindrical housing 5 having a top face. The housing 5 is made of metal and has an inner face provided with a mirror coating 6. The housing 5 and receiver 3 are connected to each other at lower parts thereof and a space S is defined between them to pass air A serving as a heating fluid.
  • At the center of the top face of the housing 5, a cylindrical smoke vent 7 is formed. A lower end of the smoke vent 7 passes through the top of the receiver 3 to make the inside of the receiver 3 and the outside of the housing 5 communicate with each other. The diameter of the smoke vent 7 is small to discharge smoke created inside the receiver 3 to the outside little by little and not to discharge a large amount of air from the inside of the receiver 3 to the outside.
  • At a lower part of a side face of the housing 5, an inlet 8 for the air A is formed. An outlet 9 is formed at a position opposite to the inlet 8.
  • To the inside of the receiver 3 having the above-mentioned structure, the sunlight L reflected by the heliostats 2 is introduced through the opening 4. The sunlight L is once concentrated at the target P and is diffused to hit the inner face of the receiver 3. The inner face of the receiver 3 is black to realize a high absorptance for the sunlight L, and therefore, the receiver 3 becomes high temperature. Even if the receiver 3 becomes high temperature, the receiver 3 is made of solid carbon material with the inner face coated with the silicon carbide film, and therefore, the receiver 3 has excellent thermal resistance not to break by heat.
  • The inner face of the receiver 3 may partly reflect the sunlight L. However, the diameter of the opening 4 of the receiver 3 is smaller than the diameter of the inner space thereof and a solid angle from each incident point on the inner face to the opening 4 is small, so that the sunlight L hardly escapes outside. Namely, components of the sunlight L scattered by the inner face of the receiver 3 mostly advance toward the depth of the inner space to hit the inner face and be absorbed thereby. When the inside of the receiver 3 becomes high temperature, smoke may sometimes be produced in the receiver 3. The smoke is discharged through the smoke vent 7, so that no smoke will present to block the sunlight L, and therefore, the sunlight L surely reaches the inner face of the receiver 3.
  • On an outer side of the receiver 3 that is at high temperature due to absorption of the sunlight L, there is the space S in which the air A serving as a heating medium flows. The air A comes in contact with the outer face of the receiver 3, is heated thereby, and circulates heat to a place that needs the heat.
  • According to the present embodiment, the outer side of the receiver 3 is covered with the housing 5 so that the receiver 3 is not exposed to the open air. This prevents heat of the receiver 3 from being taken by winds and improves thermal efficiency.
  • Although the outer side of the receiver 3 is covered with the housing 5, the opening 4 is formed at the lower side of the receiver 3, and therefore, the sunlight L reflected by the heliostats 2 is introduced through the opening 4 to the inside of the receiver 3 and is surely absorbed by the inner face of the receiver 3.
  • The receiver 3 has an inverted container shape having the opening 4 at the lower side thereof, and therefore, air A heated in the receiver 3 stays inside the receiver 3 to maintain the receiver 3 at high temperature. The heated air A tends to move upward, and therefore, if the opening 4 is formed at an upper side of the receiver 3, the heated air A will cause an upward flow to escape from the receiver 3, and in place thereof, cold air A will enter the receiver 3 to cool the receiver 3 and deteriorate thermal efficiency. This will not happen according to the present embodiment.
  • The inner face of the housing 5 is provided with the mirror coating 6 to form a reflector. As a result, high-temperature radiation from the receiver 3 is reflected toward the receiver 3, thereby a heat radiation out from the receiver 3 is effectively suppressed.
  • According to the present embodiment, only the inner face of the receiver 3 is provided with a silicon carbide (SiC) film. Instead, the receiver 3 may entirely be covered with a silicon carbide (SiC) film.
  • To increase a contact area with air A in the space S, the outer face of the receiver 3 may be made undulated.
    • Second Embodiment
  • 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.
  • 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 face may advance toward the depth of an inner space of the receiver 10, to improve a sunlight absorbing efficiency.
    • Third Embodiment
  • 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.
  • 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 14 f and 15 f. 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.
  • 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 through a space S, thus the water W comes in contact with the receiver 12 and is heated thereby and hot water W is taken out of an outlet 9.
  • According to the present embodiment, the receiver 12 is integrally formed as part of the housing 13, and therefore, no gap is present between them. This is appropriate for passing a liquid such as water W as a heating fluid.
  • According to the present embodiment, water W is used as a heating fluid. Instead of the water W, a liquid such as oil is employable. An inner face of the receiver 12 may be coated with a heat-resistant black coating.
    • Effect of Invention
  • According to the present invention, the outer side of the receiver is covered with the housing, and therefore, the receiver is not exposed to the open air. This prevents heat of the receiver from being taken by winds and improves thermal efficiency. Although the outer side of the receiver is covered with the housing, the opening is formed at a lower side of the receiver. Accordingly, sunlight reflected by the heliostats is introduced through the opening to the inside of the receiver and is surely received by the inner face of the receiver. Between the receiver and the housing, the space for a heating fluid is formed so that the heating fluid introduced into the space comes in contact with the outer face of the receiver and is heated thereby. The receiver has an inverted container shape with the opening formed at the lower side thereof, so that air heated in the receiver stays therein to maintain the receiver at high temperature.
  • According to another aspect of the present invention, the diameter of the opening of the receiver is smaller than the diameter of the inside of the receiver to reduce a solid angle. Accordingly, sunlight introduced into the receiver and reflected by the inner face of the receiver will rarely escape outside through the opening.
  • The receiver is made of solid silicon carbide, or solid silicon carbide entirely covered with a silicon carbide film. The inner face of the receiver is black due to the silicon carbide film, to improve a sunlight absorptance. At least the surface of the receiver is formed with a silicon carbide film, to provide excellent heat resistance.
  • Further, the inner face of the housing is provided with a mirror coating. If the heating fluid is a transparent gas such as air, the mirror coating reflects radiation from the high-temperature receiver back to the receiver, thereby preventing heat radiation from the receiver.
  • Also, the receiver is integrally formed from part of the housing, to produce no gap between them. This is appropriate when the heating fluid is a liquid.
    • UNITED STATES DESIGNATION
  • In connection with United States designation, this international patent application claims the benefit of priority under 35 U.S.C. 119(a) to Japanese Patent Application No. 2009-99980 filed on Apr. 16, 2009, the entire content of which is incorporated by reference herein.

Claims (11)

1. A solar concentrating system having a receiver installed at a predetermined height and heliostats arranged on the ground around the receiver, the heliostats reflecting sunlight toward the receiver, wherein:
the receiver has an inverted container shape having an opening at a lower side thereof to introduce sunlight; a housing is arranged on an outer side of the receiver and surrounds the receiver except the opening; and
a space for a heating fluid is defined by the housing and the receiver.
2. The solar concentrating system according to claim 1, wherein the diameter of the opening of the receiver is smaller than that of the inside of the receiver.
3. The solar concentrating system according to claim 1, wherein the receiver is made of solid silicon carbide, or solid carbon material entirely covered with a silicon carbide film.
4. The solar concentrating system according to claim 1, wherein an inner face of the housing is provided with a mirror coating.
5. The solar concentrating system according to claim 1, wherein the receiver is made from the same material as the housing so that the receiver is continuous and integral with the housing.
6. The solar concentrating system according to claim 2, wherein the receiver is made of solid silicon carbide, or solid carbon material entirely covered with a silicon carbide film.
7. The solar concentrating system according to claim 2, wherein an inner face of the housing is provided with a mirror coating.
8. The solar concentrating system according to claim 3, wherein an inner face of the housing is provided with a mirror coating.
9. The solar concentrating system according to claim 2, wherein the receiver is made from the same material as the housing so that the receiver is continuous and integral with the housing.
10. The solar concentrating system according to claim 3, wherein the receiver is made from the same material as the housing so that the receiver is continuous and integral with the housing.
11. The solar concentrating system according to claim 4, wherein the receiver is made from the same material as the housing so that the receiver is continuous and integral with the housing.
US13/259,697 2009-04-16 2010-04-16 Solar power concentrating system Abandoned US20120012102A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JPP2009-099980 2009-04-16
JP2009099980 2009-04-16
PCT/JP2010/056835 WO2010119945A1 (en) 2009-04-16 2010-04-16 Solar light collection system

Publications (1)

Publication Number Publication Date
US20120012102A1 true US20120012102A1 (en) 2012-01-19

Family

ID=42982602

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/259,697 Abandoned US20120012102A1 (en) 2009-04-16 2010-04-16 Solar power concentrating system

Country Status (4)

Country Link
US (1) US20120012102A1 (en)
JP (1) JPWO2010119945A1 (en)
CN (1) CN102362130A (en)
WO (1) WO2010119945A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120160232A1 (en) * 2010-12-28 2012-06-28 Mitsubishi Heavy Industries, Ltd. Solar concentrating heat receiver and system thereof
CN102798968A (en) * 2012-08-07 2012-11-28 中国科学技术大学 Sectional type groove type solar energy condenser
US20130220307A1 (en) * 2012-01-05 2013-08-29 Norwich Technologies, Inc. Cavity Receivers for Parabolic Solar Troughs
WO2014026703A1 (en) * 2012-08-17 2014-02-20 Solar Tower Technologies Ag A solar receiver with a heliostat field
US20140064372A1 (en) * 2011-03-09 2014-03-06 Canon Kabushiki Kaisha Video encoding and decoding
WO2015158415A1 (en) * 2014-04-16 2015-10-22 Solar Tower Technologies Ag Receiver assembly of a solar tower power plant
US9217842B2 (en) 2013-12-26 2015-12-22 Mitaka Kohki Co., Ltd. Multi-mirror heliostat

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2486210A (en) * 2010-12-06 2012-06-13 Alstom Technology Ltd Solar receiver comprising an aperture admitting radiation into a cylindrical cavity
JP2013068392A (en) * 2011-09-26 2013-04-18 Jfe Steel Corp Solar heat collecting pipe, and solar heat collector using the same

Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3217702A (en) * 1962-08-03 1965-11-16 Wendell S Miller Radiation collecting devices
US4121564A (en) * 1977-02-04 1978-10-24 Sanders Associates, Inc. Solar energy receiver
US4128095A (en) * 1977-09-19 1978-12-05 Armstrong Cork Company Solar energy collector
US4263895A (en) * 1977-10-17 1981-04-28 Sanders Associates, Inc. Solar energy receiver
US4280327A (en) * 1979-04-30 1981-07-28 The Garrett Corporation Solar powered turbine system
US4312324A (en) * 1978-08-09 1982-01-26 Sanders Associates, Inc. Wind loss prevention for open cavity solar receivers
US4340035A (en) * 1980-04-24 1982-07-20 Begun James A Solar collector
US4373512A (en) * 1980-02-08 1983-02-15 Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft Method and apparatus for protecting an arrangement located in an area of highly concentrated radiation
US4452232A (en) * 1982-12-17 1984-06-05 David Constant V Solar heat boiler
US4546758A (en) * 1979-09-17 1985-10-15 Kraftwerk Union Aktiengesellschaft Solar-tower power station
DE19725023A1 (en) * 1997-06-13 1998-12-17 Igor Iwanowitsch Trinkin Complex conversion of focussed sun ray energy
US20040112374A1 (en) * 2002-12-13 2004-06-17 Litwin Robert Z. Solar central receiver with inboard headers
US20090173337A1 (en) * 2004-08-31 2009-07-09 Yutaka Tamaura Solar Heat Collector, Sunlight Collecting Reflector, Sunlight Collecting System and Solar Energy Utilization System
US20090277441A1 (en) * 2008-05-10 2009-11-12 Reed Jensen Low entropy heat exchanger especially for use with solar gas processors
US20090322089A1 (en) * 2007-06-06 2009-12-31 Mills David R Integrated solar energy receiver-storage unit
US20110252797A1 (en) * 2009-06-29 2011-10-20 Mitsubishi Heavy Industries, Ltd. Gas turbine plant, heat receiver, power generating device, and sunlight collecting system associated with solar thermal electric generation system
US20120132193A1 (en) * 2009-06-19 2012-05-31 Abengoa Solar New Technologies, S.A. Tower for a solar concentration plant with natural draught cooling
US20120180483A1 (en) * 2010-11-29 2012-07-19 Mitsubishi Heavy Industries, Ltd. Solar heat receiving apparatus
US20120194930A1 (en) * 2009-11-06 2012-08-02 Mitsubishi Heavy Industries, Ltd. Sunlight collection system, and method for adjusting reflecting mirror of sunlight collection system
US20120291772A1 (en) * 2010-02-05 2012-11-22 Mitsubisi Heavy Industries, Ltd Solar heat receiver

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5126556A (en) * 1974-08-29 1976-03-04 Hitachi Ltd
JPS5414031A (en) * 1977-07-04 1979-02-01 Mitsubishi Heavy Ind Ltd Optical-fiber-used solar energy collector
JPS57129348A (en) * 1981-02-02 1982-08-11 Taiyo Sanso Kk Solar heat collector
JPS59100349A (en) * 1982-11-29 1984-06-09 Agency Of Ind Science & Technol Solar heat collector
JPS62122263U (en) * 1986-01-27 1987-08-03
JPH0293253A (en) * 1988-09-30 1990-04-04 Agency Of Ind Science & Technol Light condensing and heat collecting device
CN1077018A (en) * 1993-03-19 1993-10-06 沈阳台阳太阳能有限公司 Sputtered selective absorption coating for solar energy vacuum tube
CN100580336C (en) * 2004-02-17 2010-01-13 索拉尔热力及电力有限公司 Multi-tubular solar collector structure
DE102005055858A1 (en) * 2005-11-23 2007-05-24 Göbel, Gerald, Dr. Absorber for conversion of solar radiation into thermal energy consists mainly of non-porous dark ceramic material
CN101398231B (en) * 2008-07-09 2011-08-31 广东工业大学 Solar thermal power generating multifunctional equipment with heat absorption, heat storage and vapor generation function

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3217702A (en) * 1962-08-03 1965-11-16 Wendell S Miller Radiation collecting devices
US4121564A (en) * 1977-02-04 1978-10-24 Sanders Associates, Inc. Solar energy receiver
US4128095A (en) * 1977-09-19 1978-12-05 Armstrong Cork Company Solar energy collector
US4263895A (en) * 1977-10-17 1981-04-28 Sanders Associates, Inc. Solar energy receiver
US4312324A (en) * 1978-08-09 1982-01-26 Sanders Associates, Inc. Wind loss prevention for open cavity solar receivers
US4280327A (en) * 1979-04-30 1981-07-28 The Garrett Corporation Solar powered turbine system
US4546758A (en) * 1979-09-17 1985-10-15 Kraftwerk Union Aktiengesellschaft Solar-tower power station
US4373512A (en) * 1980-02-08 1983-02-15 Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft Method and apparatus for protecting an arrangement located in an area of highly concentrated radiation
US4340035A (en) * 1980-04-24 1982-07-20 Begun James A Solar collector
US4452232A (en) * 1982-12-17 1984-06-05 David Constant V Solar heat boiler
DE19725023A1 (en) * 1997-06-13 1998-12-17 Igor Iwanowitsch Trinkin Complex conversion of focussed sun ray energy
US20040112374A1 (en) * 2002-12-13 2004-06-17 Litwin Robert Z. Solar central receiver with inboard headers
US20090173337A1 (en) * 2004-08-31 2009-07-09 Yutaka Tamaura Solar Heat Collector, Sunlight Collecting Reflector, Sunlight Collecting System and Solar Energy Utilization System
US20090322089A1 (en) * 2007-06-06 2009-12-31 Mills David R Integrated solar energy receiver-storage unit
US20090277441A1 (en) * 2008-05-10 2009-11-12 Reed Jensen Low entropy heat exchanger especially for use with solar gas processors
US20120132193A1 (en) * 2009-06-19 2012-05-31 Abengoa Solar New Technologies, S.A. Tower for a solar concentration plant with natural draught cooling
US20110252797A1 (en) * 2009-06-29 2011-10-20 Mitsubishi Heavy Industries, Ltd. Gas turbine plant, heat receiver, power generating device, and sunlight collecting system associated with solar thermal electric generation system
US20120194930A1 (en) * 2009-11-06 2012-08-02 Mitsubishi Heavy Industries, Ltd. Sunlight collection system, and method for adjusting reflecting mirror of sunlight collection system
US20120291772A1 (en) * 2010-02-05 2012-11-22 Mitsubisi Heavy Industries, Ltd Solar heat receiver
US20120180483A1 (en) * 2010-11-29 2012-07-19 Mitsubishi Heavy Industries, Ltd. Solar heat receiving apparatus

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120160232A1 (en) * 2010-12-28 2012-06-28 Mitsubishi Heavy Industries, Ltd. Solar concentrating heat receiver and system thereof
US8997734B2 (en) * 2010-12-28 2015-04-07 Mitsubishi Heavy Industries, Ltd. Solar concentrating heat receiver and system thereof
US20140064372A1 (en) * 2011-03-09 2014-03-06 Canon Kabushiki Kaisha Video encoding and decoding
US8824555B2 (en) * 2011-03-09 2014-09-02 Canon Kabushiki Kaisha Video encoding and decoding
US20130220307A1 (en) * 2012-01-05 2013-08-29 Norwich Technologies, Inc. Cavity Receivers for Parabolic Solar Troughs
US8978642B2 (en) * 2012-01-05 2015-03-17 Joel Stettenheim Cavity receivers for parabolic solar troughs
US9404675B2 (en) * 2012-01-05 2016-08-02 Joel Stettenheim Cavity receivers for parabolic solar troughs
CN102798968A (en) * 2012-08-07 2012-11-28 中国科学技术大学 Sectional type groove type solar energy condenser
WO2014026703A1 (en) * 2012-08-17 2014-02-20 Solar Tower Technologies Ag A solar receiver with a heliostat field
WO2014026746A1 (en) * 2012-08-17 2014-02-20 Solar Tower Technologies Ag A solar receiver with a heliostat field
US9217842B2 (en) 2013-12-26 2015-12-22 Mitaka Kohki Co., Ltd. Multi-mirror heliostat
WO2015158415A1 (en) * 2014-04-16 2015-10-22 Solar Tower Technologies Ag Receiver assembly of a solar tower power plant

Also Published As

Publication number Publication date
JPWO2010119945A1 (en) 2012-10-22
CN102362130A (en) 2012-02-22
WO2010119945A1 (en) 2010-10-21

Similar Documents

Publication Publication Date Title
US20120012102A1 (en) Solar power concentrating system
NO145895B (en) DEVICE FOR A SOLAR ENERGY COLLECTION SYSTEM
CN106839456B (en) Composite multi-curved-surface groove type solar concentrating collector with automatic defrosting function
WO2012055160A1 (en) Light-locking solar thermal collector and light-locking solar thermal collecting method
US5214921A (en) Multiple reflection solar energy absorber
US8985096B2 (en) Heat exchanging structure including solar heat converter
CN101877556A (en) Solar energy collection device
IE44135B1 (en) Solar energy collector
AU2010261733A1 (en) Tower for solar concentration plant with natural draught cooling
KR101404375B1 (en) Solar heating system
US20160319804A1 (en) Microchannel solar absorber
CN206176773U (en) Solar energy utilization system
CN100498116C (en) Heat-preserving high-efficiency light-suction solar heat collector
JP2008025883A (en) Heat collecting plate and heat exchanger
CN111059007B (en) Secondary reflection type light-gathering solar heat utilization system
RU2569423C1 (en) Solar heater with protection against precipitation
KR101010859B1 (en) Dish Solar Concentrator
RU2197687C2 (en) Solar absorber
AU2021105192A4 (en) A thermal solar energy concentrator system
Anwar et al. Experimental analysis of parabolic trough collector system with multiple receiver geometries and reflective materials
JP2013245877A (en) Solar heat medium heating device
EP1931925B1 (en) Solar collector with integrated heat storage
KR101712554B1 (en) Device for Concentrating Solar Power
Tiwari et al. Solar Concentrator
CN111023590A (en) Solar power generation system using supercritical carbon dioxide as cycle working medium

Legal Events

Date Code Title Description
AS Assignment

Owner name: MITAKA KOHKI CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NAKAMURA, KATSUSHIGE;REEL/FRAME:026960/0408

Effective date: 20110826

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION