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 共查询到19条相似文献,搜索用时 93 毫秒
1.
廖华  施锋 《新能源》1997,19(4):32-34
本文提出了一种用玻璃纤维制备透明绝热材料的方法,介绍了玻璃纤维材料和胶粘剂的筛选情况,分析了玻璃纤维透明绝热材料的性能。  相似文献   

2.
由空气夹层和透明蜂窝组成的复合透明蜂窝具有优异的隔热性能。就空气夹层厚度对复合透明蜂窝热损的影响作了理论分析和实验研究,证明空气夹层的存在可大幅度降低集热器的热损。由于空气夹层的两侧具有较大温差,故可使蜂窝的工作温度降低,这对延长蜂窝材料的使用寿命有利。  相似文献   

3.
《太阳能》2020,(7)
p-PERC+、n-PERT等结构的高效太阳电池的转换效率持续提升,双面化的结构设计在各类高效太阳电池和光伏组件中得以规模化普及应用。双面发电技术大幅降低了度电成本,可双面发电的光伏组件已经成为行业发展的大趋势。对于双面光伏组件的PID问题,可使用抗PID的增强型POE胶膜封装来解决,背面封装主要是使用玻璃或透明背板材料,但背面封装材料的长期可靠性仍需要进行验证。对比分析了透明PVF薄膜、PVDF薄膜、超耐候氟涂层膜等氟保护层材料的优劣,对耐紫外、耐湿热、UV+DH同步老化等性能进行对比,选择出性能更可靠的原材料及透明背板材料,并提供了高可靠性的透明背板封装解决方案。  相似文献   

4.
几种集热-贮热墙式太阳房的动态模拟及热性能比较   总被引:15,自引:3,他引:12  
叶宏  葛新石 《太阳能学报》2000,21(4):349-357
被动式太阳房的结构对其热性能具有重要影响,采用一维热网络模型对多种结构的太阳房进行了动态模拟,研究了吸热面的热辐射性质,厚墙墙体材料的热物性,不同的透明覆盖以及在透明覆盖与厚墙之间增设金属吸热板等不同结构对太阳房热性能的影响,计算结果为厚墙式被动太阳房的结构设计与材料选取提供了有益的参考。  相似文献   

5.
新型被动太阳能建筑材料   总被引:1,自引:0,他引:1  
李孟铬 《新能源》1993,15(2):9-14
对利用被动太阳能元件与太阳能致冷采暖以及与太阳电池 动式太阳能系统结合,实现住宅和大楼能源独立自给的可能性进行了估计,介绍几种被动太阳能元件,其中包括电至变色调光元件、低发射率透明材料(元件)和透明隔热材料(元件)。  相似文献   

6.
介绍了用窄缝高真空平面玻璃作普通工太阳灶的透明盖板,对箱式太阳灶的集热性能进行了实验研究的结果,并与用普通双层玻璃作盖板的箱式太阳灶进行了对比,发现用平面真空玻璃作盖板能够显著改善箱式太阳灶的性能。  相似文献   

7.
主要针对目前在国内极具发展潜力的平板型太阳集热器进行重点研究.应用太阳集热器的动态性能测试方法,对自行设计制作的不同保温材料组成的太阳能空气集热系统进行了性能测试,并结合FLUENT软件对试验过程进行模拟,提出材料费用比原系统节省1/2的新型保温材料结构的新方案.针对集热器透明盖板结构进行对比试验,得到:透光率为0.6...  相似文献   

8.
太阳能热水器塑性采光面抗老化技术徐强民,陈学平透明玻璃是太阳能采光面抗紫外耐老化的好材料,但玻璃较重且易破碎,所以人们希望选择理想的塑性透明聚合物作为太阳能采光面的材料。通过五个夏季光照共10000小时的测定,对各种塑性材料老化机理及抗老化技术有了初...  相似文献   

9.
本文综述了近年来国外开发的大型氧化铝透明瓷管的工艺流程和性能,对其作为制造关键的街2区域烧结工艺也作了介绍,指出了全透过率高的透明瓷管对超大功率高压钠灯光效率的重要性。  相似文献   

10.
透明─不透明材料一种到达某一温度时会从透明变成不透明的材料可用于太阳集热器过热保护。德国研究人员发明的这种材料在集热器过热时会从吸热状态转变成反射光的状态。新材料是聚丙烯氧化物和含苯乙烯与2-羟基乙基丙烯酸酯共聚合物的混合物,它跟多数聚合物的混合物一...  相似文献   

11.
The new class of transparent insulation materials is classified and characterisation methods are summarised. An overview on available materials and a comparison of these new materials with conventional glazing systems is given. The high potential of these materials in collector systems is briefly discussed. In the final section an overview on new optical switching materials is given, which may help to achieve economically interesting system costs.  相似文献   

12.
TIMS双层窗传热特性研究   总被引:8,自引:2,他引:6  
季杰  陈雁南 《太阳能学报》1997,18(3):286-289
分析了一种带有透明绝热材料-透明蜂窝双层窗的传热特性,并模拟计算了两个地区冬季窗户的得热量。  相似文献   

13.
利用瞬态法测量透明蜂窝构件的热损系数   总被引:1,自引:1,他引:1  
叶宏  葛新石 《太阳能学报》2002,23(5):622-625
介绍一种原理简单,易于实现且可迅速测量透明隔热材料热损系数的瞬态方法。利用该方法测量了由中国科学院上海硅酸盐硬件民和中国科学技术大会合作生产的透明蜂窝构件的热损系数,并对其放置位置(水平或垂直),透明蜂窝厚度(蜂窝孔径为定值)以及复合蜂窝底部空气层厚度等因素进行了探讨。  相似文献   

14.
The inclination angle of a transparent material exposed to solar radiation strongly varies depending on the application. It is well known that the inclination angle can highly influence the shape of condensation drops—which are sometimes unavoidable in solar thermal applications—via its effect on the receding and advancing contact angles of the drops. By means of a laboratory set-up, the effect of condensate on the transmittance of 25° and 90° (i.e., vertical) inclined single glass, polyethylene and anti-drop condensation polyethylene was measured for incidence angles up to 45°. No significant impact of the inclination angle on the transmittance of the three transparent materials in the wet state was observed. This means that transmittance results obtained on wet materials can be applied irrespective of the inclination angle of the material.  相似文献   

15.
This article discusses the use of transparent insulation materials in low energy dwellings in cold climates. Both aesthetic and thermal issues for the capillary type of transparent insulation material are investigated. In Lien (1995) granulated silica aerogel and multilayered material of corrugated sheets are also presented.To investigate the aesthetic qualities of the material, a scale model study is performed. The study treats the distribution of daylight, the visual contact through the materials, and the appearance of the materials. The results show, among other things, that the capillary material spreads direct daylight in a cone shape and distributes it to certain areas of the floor, walls, and ceiling of a room. The visual contact through the materials is limited and dependent on the thickness of the material, the illumination situation, the distance between the observer and the material and the object observed, and the angle of direction at which the observer looks through the material.Calculations of the energy consumption for heating and ventilation are performed for a row house with different sizes of materials. The calculations are done for two climate zones in Norway. The results show that energy savings in the order of 20% can be attained. The results are especially promising for the coldest climate zone, where the problem of overheating is small and the energy saving potential is still good.  相似文献   

16.
TIM复合墙体的动态传热研究   总被引:2,自引:1,他引:2  
季杰  陈雁南 《太阳能学报》1996,17(4):326-329
分析了带有透明绝材料的建筑墙体的传热过程,给出了简单、合理的计算模型,并以实例说明这种本的节能效果。  相似文献   

17.
New and innovative optical materials and coatings can greatly improve the efficiency of window energy systems. These potential materials and coatings increase energy efficiency by reducing radiative losses in the infrared, or reducing visible reflection losses or controlling overheating due to solar gain. Current progress in heat mirror coatings for glass a polymeric substrates is presented. Highly doped semiconducting oxides and metal/dielectric interference coatings are reviewed. Physical and optical properties are outlined for antireflection films and transparent aerogel insulation media. The potential for optical switching films as window elements includes discussions of electrochromic, photochromic and other physical switching processes.  相似文献   

18.
Optical indices have been determined for thin films of several electrochromic oxide materials. One of the most important materials in electrochromic devices, WO3, was thoroughly characterized for a range of electrochromic states by sequential injection of Li ions. Another promising material, Li0.5Ni0.5O, was also studied in detail. Less detailed results are presented for three other common lithium-intercalating electrochromic electrode materials: V2O5, LiCoO2, and CeO2–TiO2. The films were grown by sputtering, pulsed laser deposition (PLD) and sol–gel techniques. Measurements were made using a combination of variable-angle spectroscopic ellipsometry and spectroradiometry. The optical constants were then extracted using physical and spectral models appropriate to each material. Optical indices of the underlying transparent conductors, determined in separate studies, were fixed in the models of this work. The optical models frequently agree well with independent physical measurements of film structure, particularly surface roughness by atomic force microscopy. Inhomogeneity due to surface roughness, gradient composition, and phase separation are common in both the transparent conductors and electrochromics, resulting sometimes in particularly complex models for these materials. Complete sets of data are presented over the entire solar spectrum for a range of colored states. These data are suitable for prediction of additional optical properties such as oblique transmittance and design of complete electrochromic devices.  相似文献   

19.
The development of inorganic solid-state nanostructured solar cells over the last years has been reviewed with respect to concepts and materials. Major attention has been paid to solar cells with extremely thin absorber, solar cells with ultra-thin nano-composite absorber and solar cells with quantum dot absorber layers. The focus has been set to structured transparent electron conductors and absorber materials prepared by mainly low-temperature and wet chemical deposition methods. The great potential of inorganic solid-state nanostructured solar cells is discussed.  相似文献   

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