Solar heat collector tube
AssigneesKabushiki Kaisha Toyota Jidoshokki, Japan Fine Ceramics Center
InventorsTakuhito Tsutsui, Toru Sasatani, Kazuto Noritake, Yoshiki Okuhara, Tomohiro Kuroyama, Daisuke Igimi
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Abstract
A solar heat collector tube in which at least an infrared reflective layer, a sunlight-heat conversion layer and an anti-reflection layer are provided on the outer surface of a tube through the interior of which a heat medium can flow, wherein the infrared reflective layer in the solar heat collector tube is an Ag layer having Nb dispersed therein, the content of Nb being 0.1 at % to 31.8 at %.
Claims5
A solar heat collector tube in which at least an infrared reflective layer, a sunlight-heat conversion layer and an anti-reflection layer are provided on an outer surface of a tube, through the interior of which a heat medium can flow, wherein the infrared reflective layer is an Ag layer having Nb dispersed therein, and content of Nb is 0.1 at % to 31.8 at %, wherein a metal protective layer is provided between the infrared reflective layer and the sunlight-heat conversion layer, and wherein the metal protective layer is formed by at least one metal selected from a group consisting of Nb, Mo, W, Cu, Ni, Fe, Cr and Ta, and wherein an oxygen barrier layer is provided directly between the metal protective layer and the sunlight-heat conversion layer.
Dependencies are inferred from the claim text.