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2. 发明申请

WO2009051595A1 HIGH TEMPERATURE SOLAR SELECTIVE COATINGS 审中-公开
标题翻译：高温太阳能选择性涂料
公开(公告)号：WO2009051595A1
公开(公告)日：2009-04-23
申请号：PCT/US2007/081838
申请日：2007-10-18
申请人： MIDWEST RESEARCH INSTITUE , KENNEDY, Cheryl E.
发明人： KENNEDY, Cheryl E.
IPC分类号： F24J2/02 , C23C14/00 , C23C16/00
CPC分类号： F24S70/20 , F24S10/45 , F24S70/30 , G02B5/281 , Y02E10/44
摘要： improved solar collectors (40) comprising glass tubing (42) attached to bellows (44) by airtight seals (56) enclose solar absorber tubes (50) inside an annular evacuated space (54;. The exterior surfaces of the solar absorber tubes (50) are coated with improved solar selective coatings {48} which provide higher absorbance, lower emittance and resistance to atmospheric oxidation at elevated temperatures. The coatings arc multilayered structures comprising solar absorbent layers (26) applied to the metal surface of the absorber tubes (50), typically stainless steel, topped wiih antireflective Savers (28) comprising at least two layers (30. 32) of refractory metal or metalloid oxides (such as titania and silica) with substantially differing indices of refraction in adjacent layers. Optionally, at least one layer of a noble metal such as platinum can be included between some of the layers. The absorbent layers cars include cermet materials comprising particles of metal compounds is a matrix, which can contain oxides of refractory metals or metalloids such as silicon. Reflective layers within the coating layers can comprise refractory metal silicides and related compounds characterized by the formulas TiSi. Ti 3 SiC 2 , TiAlSi, TiAN and similar compounds for Zr and Hf. The titania can be characterized by the formulas TiO 2 , Ti 3 O 5 . TiOx or TiO x N 1 - x with x 0 to 1. The silica can be at least one of SiO 2 , SiO 2x or SiO 2x N 1-x with x = 0 to 1.
摘要翻译：改进的太阳能收集器（40）包括通过气密密封件（56）连接到波纹管（44）上的玻璃管（42），所述密封密封件封闭在环形抽空空间（54）内的太阳能吸收管（50）;太阳能吸收管（50）的外表面）涂覆有改进的太阳能选择性涂层{48}，其在高温下提供更高的吸光度，更低的发射率和对大气氧化的抗性。该涂层包括施加到吸收管（50）的金属表面的太阳能吸收剂层（26）的多层结构），通常是不锈钢，顶部的抗反射储存器（28），其包括至少两层（30.32）难熔金属或准金属氧化物（例如二氧化钛和二氧化硅），其在相邻层中具有基本上不同的折射率，或者至少一层贵金属如铂可以包括在一些层之间。吸收层车包括金属陶瓷材料，包括金属化合物的颗粒是基质 x，其可以含有难熔金属的氧化物或准金属例如硅。涂层内的反射层可以包含难熔金属硅化物和以式TiSi表征的相关化合物。 Ti3SiC2，TiAlSi，TiAN和类似的Zr和Hf化合物。二氧化钛可以通过TiO 2，Ti 3 O 5表征。 TiO x或TiO x N 1-x，x 0至1.二氧化硅可以是x = 0至1的SiO 2，SiO 2 x或SiO 2 x N 1-x中的至少一种。

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