Solar light heat receiver, and solar light collecting and heat receiving system

Patent metadata

Field	Value
Publication number	US-10054335-B2
Application number	US-201013513081-A
Country	US
Kind code	B2
Filing date	Oct 4, 2010
Priority date	Dec 24, 2009
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

Disclosed is a solar light heat receiver having a heat receiving tube which allows a heat medium to flow through the inside thereof and which transmits the heat of irradiated solar light to the heat medium, the solar light heat receiver being provided with a partition member which divides the inside of the heat receiving tube into a first passage on the light receiving surface side to be irradiated with solar light, and a second passage on the non-light receiving surface side opposite to the first passage in the irradiation direction of solar light.

First claim

The invention claimed is:

1. A sunlight collecting heat receiver comprising:
a heat receiver body which is formed as a casing, the heat receiver body having an opening portion and a tapered portion, the tapered portion being formed at a lower portion of the heat receiver body so that an inner diameter of the heat receiver body gradually decreases in a direction toward the opening portion;
a housing which accommodates the heat receiver body therein;
a plurality of heat receiving pipes, each of which has: a lower end penetrating through the tapered portion; and an upper located inside the heat receiver body provided inside the heat receiver body, each heat receiving pipe being parallel to an axial direction of the sunlight collecting heat receiver, each heat receiving pipe having a passageway in which a heat medium flows, each heat receiving pipe transferring heat of irradiated sunlight to the heat medium;
a heat medium introduction header which is an endless annular member that does not have ends in a circumferential direction and is around the axial direction, which allows the heat medium to flow inside the heat medium introduction header in the circumferential direction of the heat medium introduction header, which disperses the heat medium flowing inside the heat medium introduction header to each heat receiving pipe, to which upstream ends of the plurality of heat receiving pipes in a flowing direction of the heat medium are integrally connected, the heat medium introduction header being disposed outside the tapered portion of the heat receiver body so as to surround the tapered portion;
a heat medium removal header which is an endless annular member that does not have ends in a circumferential direction and is around the axial direction, which collects the heat medium in the heat medium removal header, which allows the heat medium to flow inside the heat medium removal header in the circumferential direction of the heat medium removal header, to which downstream ends of the plurality of heat receiving pipes in the flowing direction of the heat medium are integrally connected;
heat receiver supply pipes, each of which has a connection portion and a curved portion and which extends in a radial-outer direction of the heat medium introduction header, the connection portion being connected to the heat medium introduction header, the curved portion being provided outside the heat receiver body and between the housing and the heat receiver body;
a partition member which divides the inside of the heat receiving pipe into a first passageway near a light receiving surface irradiated with the sunlight and a second passageway near a non-light receiving surface; and
an orifice plate which is provided at an inlet of the second passageway and constrains the heat medium from flowing into the second passageway so as to block the inlet, the orifice plate having an orifice hole, the orifice hole penetrating the orifice plate in a thickness direction thereof.

2. A sunlight collecting heat receiver comprising:
a heat receiver body which is formed as a casing, the heat receiver body having an opening portion and a tapered portion, the tapered portion being formed at a lower portion of the heat receiver body so that an inner diameter of the heat receiver body gradually decreases in a direction toward the opening portion;
a housing which accommodates the heat receiver body therein;
a plurality of heat receiving pipes, each of which has: a lower end penetrating through the tapered portion; and an upper located inside the heat receiver body provided inside the heat receiver body, each heat receiving pipe being parallel to an axial direction of the sunlight collecting heat receiver, each heat receiving pipe having a passageway in which a heat medium flows, each heat receiving pipe transferring heat of irradiated sunlight to the heat medium;
a partition member which divides the inside of each heat receiving pipe into a first passageway near a light receiving surface irradiated with the sunlight and a second passageway near a non-light receiving surface;
a heat medium introduction header assembly, which is an endless annular member that does not have ends in a circumferential direction and is around the axial direction, which allows the heat medium to flow inside the heat medium introduction header assembly in the circumferential direction of the heat medium introduction header assembly, to which upstream ends of the plurality of heat receiving pipes in the heat medium flowing direction are connected and which introduces the heat medium toward the plurality of heat receiving pipes, the heat medium introduction header assembly being disposed outside the tapered portion of the heat receiver body so as to surround the tapered portion; and
heat receiver supply pipes, each of which has a connection portion and a curved portion and which extends in a radial-outer direction of the heat medium introduction header assembly, the connection portion being connected to the heat medium introduction header assembly, the curved portion being provided outside the heat receiver body and between the housing and the heat receiver body,
wherein the heat medium introduction header assembly includes:
a partition plate which divides and halves the heat medium introduction header assembly in the radial direction into the inside and the outside;
a first header formed by the partition plate at the inside of the heat medium introduction header assembly in the radial direction, the first header communicating with the first passageway of the heat receiving pipe;
a second header formed by the partition plate at the outside of the heat medium introduction header assembly in the radial direction, the second header communicating with the second passageway of the heat receiving pipe; and
an orifice plate which is provided at an inlet of the second header so as to narrow the inlet, the orifice plate having an orifice hole, the orifice hole penetrating the orifice plate in a thickness direction thereof.

3. The sunlight collecting heat receiver according to claim 1 ,
wherein the first passageway and the second passageway communicate with each other in one end of the heat medium flowing direction, and
wherein the heat medium is supplied from the other end of the first passageway in the flowing direction and is discharged from the other end of the second passageway in the flowing direction.

4. The sunlight collecting heat receiver according to claim 3 , further comprising:
a plurality of the heat receiving pipes;
a heat medium introduction header to which the other ends of the first passageways of the plurality of heat receiving pipes in the flowing direction are connected and which introduces the heat medium toward the first passageways; and
a heat medium removal header to which the other ends of the second passageways in the flowing direction are connected and which derives the heat medium from the second passageways.

5. A sunlight collecting heat receiving system comprising:
a plurality of reflection mirrors which is installed on a ground and reflects sunlight;
a tower portion which is built on the ground;
a casing which is supported by the tower portion and has an opening portion used for collecting the sunlight; and
the sunlight collecting heat receiver according to claim 1 which is received inside the casing.

6. A sunlight collecting heat receiving system comprising:
a plurality of reflection mirrors which is installed on a ground and reflects sunlight;
a tower portion which is built on the ground;
a casing which is supported by the tower portion and has an opening portion used for collecting the sunlight; and
the sunlight collecting heat receiver according to claim 2 which is received inside the casing.

Assignees

• Nakatani Hiromi
• Mitsubishi Heavy Ind Ltd

Inventors

• Nakatani Hiromi

Classifications

• F24S40/80

  Accommodating differential expansion of solar collector elements · CPC title

• F24S10/70 Primary

  the working fluids being conveyed through tubular absorbing conduits · CPC title

• Y02E10/46

  Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines · CPC title

• Y02E10/44

  Heat exchange systems · CPC title

• F24S20/20

  Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants · CPC title