Solar heat collection tube, sunlight-to-heat conversion device and solar heat power generation device

Patent metadata

Field	Value
Publication number	US-2018017289-A1
Application number	US-201515548852-A
Country	US
Kind code	A1
Filing date	Dec 11, 2015
Priority date	Feb 6, 2015
Publication date	Jan 18, 2018
Grant date	—

Abstract

A solar heat collection tube 1 of the present invention has: a tube 3 in which a heat medium 2 can flow; an infrared reflective layer 4 formed on an outer surface of the tube 3 ; a sunlight-to-heat conversion layer 5 formed on the infrared reflective layer 4 and containing manganese silicide; and an anti-reflection layer 6 formed on the sunlight-to-heat conversion layer 5 . Preferably, the manganese silicide used in the sunlight-to-heat conversion layer 5 is a semiconductor. The solar heat collection tube 1 of the present invention allows sunlight to be converted into heat efficiently.

First claim

1 - 6 . (canceled)

7 . A solar heat collection tube, comprising:
a tube in which a heat medium can flow; an infrared reflective layer formed on an outer surface of the tube; a sunlight-to-heat conversion layer formed on the infrared reflective layer and containing manganese silicide; and an anti-reflection layer formed on the sunlight-to-heat conversion layer.

8 . The solar heat collection tube according to claim 7 , wherein the manganese silicide is a semiconductor.

9 . The solar heat collection tube according to claim 7 , wherein the manganese silicide has Mn 11 Si 19 as a main component.

10 . The solar heat collection tube according to claim 7 , wherein a light-transmitting layer is further formed between the infrared reflective layer and the sunlight-to-heat conversion layer.

11 . A sunlight-to-heat conversion device, comprising:
the solar heat collection tube according to claim 7 ; and light-concentrating means for concentrating sunlight onto the solar heat collection tube.

12 . A solar heat power generation device comprising the sunlight-to-heat conversion device according to claim 11 and a power generator,
wherein power is generated by heating a heat medium inside the solar heat collection tube of the sunlight-to-heat conversion device, and utilizing thermal energy of the heated heat medium in the power generator.

Assignees

• Toyota Jidoshokki Kk
• Japan Fine Ceramics Ct

Inventors

• Tsutsui Takuhito
• Sasatani Toru
• Noritake Kazuto
• Okuhara Yoshiki
• Kuroyama Tomohiro
• Igimi Daisuke

Classifications

• F24S70/16 Primary

  made of ceramic; made of concrete; made of natural stone · CPC title

• Y02E10/40

  Solar thermal energy, e.g. solar towers · CPC title

• F24S70/20 Primary

  characterised by absorbing coatings; characterised by surface treatment for increasing absorption · CPC title

• F24S70/30

  Auxiliary coatings, e.g. anti-reflective coatings · CPC title

• F24S70/225

  for spectrally selective absorption · CPC title