Concentrated solar heat receiver, reactor, and heater

Patent metadata

Field	Value
Publication number	US-2017145324-A1
Application number	US-201515310354-A
Country	US
Kind code	A1
Filing date	Apr 23, 2015
Priority date	May 13, 2014
Publication date	May 25, 2017
Grant date	—

Abstract

A heat receiver, a reactor, and a heater utilize the heat of concentrated solar light for thermal decomposition and/or chemical reaction of coals, etc. The heat receiver includes: a side portion forming a substantially cylindrical side surface; a substantially circular bottom portion connected to the lower edge of the side portion; and a ceiling connected to the upper edge of the side portion. A substantially circular aperture is formed in the center of the ceiling. The heat receiver has a substantially cylindrical cavity and the opening portion is open. When the cavity has a diameter of D and a length of L, and the aperture has a diameter of d, d=D/2 or less and L=2D or more. Concentrated solar light entering the heat receiver is to be contained in the heat receiver to effectively utilize the solar light.

First claim

1 . A reaction apparatus comprising:
a heat receiver of concentrated solar radiation comprising:
a side portion;
a bottom portion connected to a lower end of the side portion;
a ceiling connected to an upper end of the side portion;
an aperture provided in the ceiling; and
a reflector provided on an inner wall of the side portion or the bottom portion, said reflector reflecting a solar light toward the inner wall; and
a reactor arranged around the heat receiver with a predetermined distance from the heat receiver in a manner covering the side and bottom portions of the heat receiver, said reactor containing a draft tube therein, wherein the side portion, the bottom portion and the ceiling define a cavity having the aperture and an inner wall absorbing the solar light.

2 . The reaction apparatus according to claim 1 , wherein said aperture has an opening area of s satisfying an inequation s≦S/4 wherein S denotes an inner surface area of the ceiling inclusive of the opening area of the aperture within the cavity.

3 . The reaction apparatus according to claim 1 , wherein said cavity has an substantially cylindrical shape and said aperture has an substantially circular shape, wherein if D denotes a diameter of said cavity, L denotes a length of the cavity and d denotes a diameter of the aperture, they satisfy inequations L≧2D and d≦D/2.

4 . The reaction apparatus according to claim 3 , further comprising a conical reflector provided in a central part of the bottom portion, wherein said conical reflector has a diameter not smaller than said diameter of d, and an elevation angle of the conical reflector, with respect to the central axis of the cavity, is in a range from 30° to 60° degrees.

5 . The reaction apparatus according to claim 4 , further comprising at least one reflector concentrically arranged on the bottom portion.

6 . The reaction apparatus according to claim 3 , wherein said cavity has a first diameter at the ceiling different than a second diameter at the bottom portion.

7 . The reaction apparatus according to claim 1 , wherein said receiver is made of any one of Inconel, alumina, silicon carbide and stainless steel.

8 . The reaction apparatus according to claim 7 , wherein said receiver is made of a black material, or has an inner wall coated with black paint.

9 - 13 . (canceled)

14 . The reaction apparatus according to claim 4 , wherein said cavity has a first diameter at the ceiling different than a second diameter at the bottom portion.

15 . The reaction apparatus according to claim 5 , wherein said cavity has a first diameter at the ceiling different than a second diameter at the bottom portion.

16 . The reaction apparatus according to claim 2 , wherein said receiver is made of any one of Inconel, alumina, silicon carbide and stainless steel.

17 . The reaction apparatus according to claim 3 , wherein said receiver is made of any one of Inconel, alumina, silicon carbide and stainless steel.

18 . The reaction apparatus according to claim 4 , wherein said receiver is made of any one of Inconel, alumina, silicon carbide and stainless steel.

19 . The reaction apparatus according to claim 5 , wherein said receiver is made of any one of Inconel, alumina, silicon carbide and stainless steel.

20 . The reaction apparatus according to claim 6 , wherein said receiver is made of any one of Inconel, alumina, silicon carbide and stainless steel.

21 . The reaction apparatus according to claim 16 , wherein said receiver is made of a black material, or has an inner wall coated with black paint.

22 . The reaction apparatus according to claim 17 , wherein said receiver is made of a black material, or has an inner wall coated with black paint.

23 . The reaction apparatus according to claim 18 , wherein said receiver is made of a black material, or has an inner wall coated with black paint.

24 . The reaction apparatus according to claim 19 , wherein said receiver is made of a black material, or has an inner wall coated with black paint.

25 . The reaction apparatus according to claim 20 , wherein said receiver is made of a black material, or has an inner wall coated with black paint.

Assignees

• Univ Niigata

Inventors

• Kodama Tatsuya
• Matsubara Koji
• Gokon Nobuyuki

Classifications

• C10J3/20 Primary

  Apparatus; Plants · CPC title

• F24S2080/05

  Flow guiding means; Inserts inside conduits · CPC title

• Y02E70/30

  Systems combining energy storage with energy generation of non-fossil origin · CPC title

• C10J2300/093

  Coal · CPC title

• F24S23/75

  with conical reflective surfaces · CPC title