CN106369847A - 一种太阳能热水器系统 - Google Patents
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Abstract
本发明涉及一种太阳能热水器系统,包括太阳能热水器和热利用系统;其特征在于:所述太阳能热水器包括集热器,所述集热器用于吸收太阳能的热量以加热太阳能热水器中的水,所述集热器为金属集热管,金属集热管包括金属基管,所述金属基管的外表面依次覆盖吸热层和反光防腐层;所述热利用系统包括聚光装置,包括至少一个反射镜以及与其对应的跟踪组件,以对太阳进行精确跟踪并聚焦太阳光;将光源聚焦给热吸收介质与集热器,接收所述聚光装置聚焦的太阳光,并将太阳能转化为热能。
Description
技术领域
本发明涉及太阳能热水器领域,尤其涉及一种太阳能热水器系统。
背景技术
随着现代社会经济的高速发展,人类对能源的需求量越来越大。然而煤、石油、天然气等传统能源储备量不断减少、日益紧缺,造成价格的不断上涨,同时常规化石燃料造成的环境污染问题也愈加严重,这些都大大限制着社会的发展和人类生活质量的提高。能源问题已经成为当代世界的最突出的问题之一。因而寻求新的能源,特别是无污染的清洁能源已成为现在人们研究的热点。太阳能是一种取之不尽用之不竭的清洁能源,而且资源量巨大,地球表面每年收的太阳辐射能总量为 1×10 18 kW·h,为世界年耗总能量的一万多倍。世界各国都已经把太阳能的利用作为新能源开发的重要一项,我国政府在《政府工作报告》也早已明确提出要积极发展新能源,其中太阳能的利用尤其占据着突出地位。然而由于太阳辐射到达地球上的能量密度小(每平方米约一千瓦),而且又是不连续的,这给大规模的开发利用带来一定困难。因此,为了广泛利 用太阳能,不仅要解决技术上的问题,而且在经济上必须能同常规能源相竞争。太阳能的利用主要有光热转化、光电转化、光化学转换这三种形式。相比于太阳能光伏产业和光化学转换的高昂成本与低的能量转换效率,太阳能热转化是一种能量转换效率和利用率高而且成本低廉、可在全社会广泛推广的太阳能利用方式。在太阳能热利用装置中,关键是要将太阳辐射能转换成热能,实现这种转换的器件称为太阳能集热器。
无论哪种形式和结构的太阳能集热器,都要有一个用来吸收太阳辐射的吸收部件,该部件吸收表面的热辐射性能对集热器的热性能起着重要的作用。表征吸收表面热辐射性能的物理量是吸收比和热发射比,前者表征吸收太阳辐射能的能力,后者表征自身温度下发射辐射能的能力。前者越高后者越低,表明吸热效果最好。
太阳能热利用产品在快速发展的同时也面临着一些突出问题。当 代以高层建筑为主体的城市建筑格局,使住宅便于安装太阳能吸收装置的面积变小,热供 应能力有限,从而,致使太阳能热利用系统在城市内高层建筑上的推广应用受到限制。因 此,寻求简易、高效的太阳能 - 建筑集成技术,具有重要的现实意义。
发明内容
本发明要解决的技术问题是提供一种太阳能热水器系统,能够解决普通太阳能热水器系统集热系统中集热管集热效果差的问题。
为解决上述技术问题,本发明的技术方案为:一种太阳能热水器系统,包括太阳能热水器和热利用系统;其创新点在于:所述太阳能热水器包括集热器,所述集热器用于吸收太阳能的热量以加热太阳能热水器中的水,所述集热器为金属集热管,金属集热管包括金属基管,所述金属基管的外表面依次覆盖吸热层和反光防腐层;
所述吸热层从内向外依次包括红外反射涂层、吸热涂层和减反射涂层,其中红外反射涂层、吸热涂层和减反射涂层的厚度的比例为1:1.2:1.5;所述红外反射涂层为Ag ;吸热涂层从内向外依次包括TiAl、Cr、Nb、Zr 四层,其中 TiAl、Cr、Nb、Zr 四层的厚度比例为 1:1.2:0.8:1.2 ;减反射涂层从内向外依次是 AlN、TiO2、Ta2O5、SiO2 层,其中 AlN、TiO2、Ta2O5、SiO2 层的厚度比例为 0.8:1:0.75:1.1;
所述反光防腐层与吸热层的厚度比为1:1,反光防腐层从内向外依次包括底漆层、防水层、粘结层、铝膜反光层、透明抗磨层;所述底漆层为环氧富锌底漆,所述底漆层、防水层、粘结层、铝膜反光层、透明抗磨层的厚度比为1:1.1:0.8:1.4:0.7。
进一步的,所述热利用系统包括聚光装置,聚光装置包括至少一个反射镜以及与其对应的跟踪组件,以对太阳进行精确跟踪并聚焦太阳光;将光源聚焦给热吸收介质与集热器,接收所述聚光装置聚焦的太阳光,并将太阳能转化为热能。
本发明的优点在于:
1)本发明提供的太阳能热水器具有防腐层和吸热层,可以减少对基管的腐蚀,同时能够加大对太阳能的吸收;
2) 本发明设计了新的防腐材料,加强防腐效果;
3)本发明对吸热层的材料和厚度进行精心的选择和实验,已达到最好的吸热的技术效果;
4)本发明的太阳能热利用系统用于建筑集成,为聚光装置和太阳能吸收装置相结合的建筑或建筑群同时提供热能。本发明依据建筑的特点,在建筑表面及其周围空间分布式设置包括反射镜及与其对应 的跟踪组件的聚光装置,精确跟踪太阳并聚焦太阳光至太阳能吸收装置的集热器上,以使所述太阳光被吸收利用,增加太阳能吸收装置对太阳光的吸收量。相较于现有技术,本发明 的聚光装置可设置在太阳能吸收装置所在的建筑、和/或与该建筑相临近的建筑、和/或临 近该建筑的地面上,本发明分布式设置的聚光装置,可以明显增加太阳能吸收装置的受光面积,能够在特定不可改变的建筑环境下,有效的利用建筑及其相邻建筑外部的可利用空间,增大太阳光的收集面积,提升太阳能热利用系统的热能供应能力,相比于现有技术,本 发明适用范围更广,使本发明更易于扩展应用于建筑集成的范围中 ;本发明聚光装置的反 光镜结构简单、易操作、适应性强,便于在已有热利用系统的基础上做改造 ;且反光镜可分 布式选择安装在同一或不同建筑上,灵活度较高,具高度产业利用价值。
附图说明
下面结合附图和具体实施方式对本发明作进一步详细的说明。
图1为太阳能热水器防腐层和吸热层的结构示意图。
图2为太阳能热水器热利用系统示意图。
具体实施方式
下面的实施例可以使本专业的技术人员更全面地理解本发明,但并不因此将本发明限制在所述的实施例范围之中。
如图1至图2所示的一种太阳能热水器系统,包括太阳能热水器和热利用系统1;所述太阳能热水器包括集热器,所述集热器用于吸收太阳能的热量以加热太阳能热水器中的水,所述集热器为金属集热管,金属集热管包括金属基管,所述金属基管的外表面依次覆盖吸热层2和反光防腐层3。
吸热层2从内向外依次包括红外反射涂层21、吸热涂层22和减反射涂层23,其中红外反射涂层21、吸热涂层22和减反射涂层23的厚度的比例为1:1.2:1.5;所述红外反射涂层21为Ag ;吸热涂层22从内向外依次包括TiAl、Cr、Nb、Zr 四层,其中 TiAl、Cr、Nb、Zr 四层的厚度比例为 1:1.2:0.8:1.2 ;减反射涂层23从内向外依次是 AlN、TiO2、Ta2O5、SiO2层,其中 AlN、TiO2、Ta2O5、SiO2 层的厚度比例为 0.8:1:0.75:1.1。
反光防腐层3与吸热层2的厚度比为1:1,反光防腐层从内向外依次包括底漆层、防水层、粘结层、铝膜反光层、透明抗磨层;所述底漆层为环氧富锌底漆,所述底漆层、防水层、粘结层、铝膜反光层、透明抗磨层的厚度比为1:1.1:0.8:1.4:0.7。
热利用系统1包括聚光装置,聚光装置包括至少一个反射镜11以及与其对应的跟踪组件12,以对太阳进行精确跟踪并聚焦太阳光;将光源聚焦给热吸收介质与集热器,接收所述聚光装置聚焦的太阳光,并将太阳能转化为热能。
本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。
Claims (2)
1.一种太阳能热水器系统,包括太阳能热水器和热利用系统;其特征在于:所述太阳能热水器包括集热器,所述集热器用于吸收太阳能的热量以加热太阳能热水器中的水,所述集热器为金属集热管,金属集热管包括金属基管,所述金属基管的外表面依次覆盖吸热层和反光防腐层;
所述吸热层从内向外依次包括红外反射涂层、吸热涂层和减反射涂层,其中红外反射涂层、吸热涂层和减反射涂层的厚度的比例为1:1.2:1.5;所述红外反射涂层为Ag ;吸热涂层从内向外依次包括TiAl、Cr、Nb、Zr 四层,其中 TiAl、Cr、Nb、Zr 四层的厚度比例为 1:1.2:0.8:1.2 ;减反射涂层从内向外依次是 AlN、TiO2、Ta2O5、SiO2 层,其中 AlN、TiO2、Ta2O5、SiO2 层的厚度比例为 0.8:1:0.75:1.1;
所述反光防腐层与吸热层的厚度比为1:1,反光防腐层从内向外依次包括底漆层、防水层、粘结层、铝膜反光层、透明抗磨层;所述底漆层为环氧富锌底漆,所述底漆层、防水层、粘结层、铝膜反光层、透明抗磨层的厚度比为1:1.1:0.8:1.4:0.7。
2.根据权利要求1所述的一种太阳能热水器系统,其特征在于:所述热利用系统包括聚光装置,聚光装置包括至少一个反射镜以及与其对应的跟踪组件,以对太阳进行精确跟踪并聚焦太阳光;将光源聚焦给热吸收介质与集热器,接收所述聚光装置聚焦的太阳光,并将太阳能转化为热能。
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