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《中国建筑金属结构》2014,(1):92-92
正力诺光伏太阳能多晶电池片效率达到17.81%2013年11月27日,力诺光伏集团电池二厂批量生产多晶电池片转换效率达到17.81%,与前期最高效率相比提高0.2%,提前一个多月完成年度效率指标。通过对本批次电池片后续封装组件的跟踪发现,260W以上组件占比达到15%,降低了营销接单门槛,为开拓高功率组件市场奠定了基础。提高电池转换效率是迎接市场挑战的 相似文献
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传统的太阳能光伏组件受温度影响较大,光伏组件表面温度的急剧升高会严重影响光伏电池的发电效率。太阳能热电联产系统回收利用太阳能电池产生的热能可降低太阳能电池的工作温度,在提高太阳能电池发电效率的同时亦可产生热水。充分运用热管导热技术,自主设计了热管型太阳能热电联产系统组件、太阳能光热系统。该系统运行两年来,年均产电2.37万k W·h,年产45℃以上热水2 000 t,具有显著的经济和环境效益,推广应用前景广阔。 相似文献
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太阳能玻璃主要是指用于太阳能光伏发电和太阳能光热组件的封装或盖板超白压延玻璃。对于太阳能产业对太阳能玻璃的需求,一些世界著名研究机构相继发表了自己的研究报告,世界美国研究机构ISuppli报告则显示,2009年太阳能光伏组件市场产能将由2008年的7.7GW增加62%至11.1GW。这一数据表明,2009年太阳能玻璃的消耗量将由2008年的46.2万吨上升至66.6万吨。 相似文献
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本文首先分析光伏建筑一体化中光伏组件清洁的重要性,分析国家现有光伏建筑一体化标准对太阳能光伏组件清洁和维护的具体要求,结合某实际项目的测试结果,对比分析该项目光伏组件清洗前后对系统转换效率、经济指标和环境指标的影响。 相似文献
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随着液压传动的用途越来越广 ,工程技术人员正尽力制造更多更好的液压元件 ,设计更适用、性能更佳的液压回路 ,但是仍有一些液压传动中应该遵循的基本原理却屡屡在某些设备中被忽视 ,造成了不应有的故障 ,尤为严重的是这些问题往往是设计方面的缺陷所造成的 ,甚至出现在一些大型设备和一些世界著名企业的设备上。笔者试图列出一些问题 ,从理论和实践加以分析 ,指出其原因之所在 ,引起同行的共鸣和重视。1 液压泵和液压马达的安装问题多数液压传动的教科书中 ,对液压泵和液压马达都有这样的安装要求 :泵和马达轴端一般不得承受径向力 ,不得… 相似文献
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The construction industry demands a productivity increase that cannot be attained by means of traditional methods for masonry that have already reached their system limits and cannot contribute to further effectiveness. Further rationalisation can only be achieved by the reduction of labour and construction times. Therefore, a certain innovative leap is required by a system approach that combines the already existing construction technologies with new information, automation and robot technologies. An integrated automation system has been developed in the European ESPRIT III Robot Assembly System for Computer Integrated Construction (ROCCO) Project. Industrial partners and research centres from Germany, Spain and Belgium that are linked to the construction industry and robotics have formed the consortium. Block assembly tasks are performed by means of two robotics systems. One of the many challenges of these systems is related with the development of the control approach of large-range robots with hydraulic actuators. Conventional control strategies, based on PID or PD controllers and linear models, are unsuitable and prove completely inefficient for these robots. New control methods are necessary in order to achieve high performance with a reasonable time-consuming algorithm, useful in a real time control system. The most significant aspects related to the development of these robotic systems and their control systems are presented in this paper. 相似文献
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Paul Fazio 《Building and Environment》1978,13(1):61-67
A half scale floor assembly of sandwich construction complete with supporting walls was tested. The panels comprise 2 aluminium facings of 0.025 in.thick (0.64 mm) and polystyrene core of 2 in.thick (50 mm). The model was subjected to static loading of up to 110 psf (5260 N/m2) and linear behaviour was observed throughout the loading range. Under load of 40 psf (1915 N/m2) the maximum floor deflection was only of the span. It is concluded that deflection requirement can be easily met by most sandwich construction with foamed core. Effects of shear deformations and of connection rigidity on the stresses and deflections are also studied. Predicted values found by finite element analysis compare favourably with experimental results. 相似文献
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Usko Anttikoski Veikko Grn Alpo Halme Mauno Juhola Marjatta Palmu Olavi Parkkamki Tapani Tuisku Osmo yrvinen 《Tunnelling and Underground Space Technology incorporating Trenchless Technology Research》1989,4(1)
One of the most famous public spaces in Finland built underground in rock is the Retretti art centre and concert hall. This paper describes the Retretti caverns, as well as the Kannussillanmaki Theatre, near Espoo. In addition, the authors provide information about two underground projects now in the planning stages: a cultural and sports centre on an island near Helsink; and a space for public meetings and exhibitions, underneath Sibelius Park. 相似文献