灰尘污迹对太阳能电池板发电影响翻译节选.doc

灰尘污迹对太阳能电池板发电影响翻译节选 PAGE PAGE 1 ———————————————————————————————— 作者： ———————————————————————————————— 日期： PAGE / NUMPAGES 太阳能电池板清洗能效分析 One cause of power losses in photovoltaic systems is the accumulated dirt on modules surface, mainly dust but also bird droppings. It is usual to include a loss factor for this cause about 3-4%. The large grid-connect photovoltaic plants include periodic modules cleaning to avoid these losses. In this paper we have quantified the losses caused by accumulated dirt on module surface. 光伏系统功率损失的一个原因是包括鸟粪在内的灰尘尘的累积。它通常带来3-4%功率损失。网格化连接起来的大型太阳能发电厂通常进行定期的面板清洁避免这些损失。在本文中我们将量化电池组件表面上的累积污垢所造成的损失。 The use of textured glasses increases the performance of the modules due to the decrease of reflection losses. We have checked if these losses depend on the structure of the module surface and also if the rain cleans well enough the modules and in which conditions this cleaning happens. The obtained results show that losses due to accumulated dirt in modules can reach values about the 15% for period without rain. 使用太阳能超白玻璃能通过减少反射来提高电池组件性能。我们已经检验过这种损失是否是因为电池组件表面结构形式产生的，并且，雨水能否清洁电池表面，在什么条件下雨水是够的。获取的结果表明，在缺雨时期，由于在电池表面中的累积污垢，电池效率损失可以达到15%以上。 We have measure yearly average dirt values of losses about 6% that is greater than the values used in the sizing and design of grid-connected photovoltaic systems. We can conclude that textured glasses do not accumulate more dirt than the non-textured glasses and therefore the maintenance of photovoltaic system with textured glasses does not mean additional expenses. 经过测量，电池表面污垢灰尘造成年平均降低发电效率6%。远大于目前光伏并网系统的选型与设计参数。 This work investigates experimentally and mathematically the effect of sand dust layer on beam light transmittance at a photovoltaic module glazing surface. A transmittance coefficient for beam light has been found with respect to the number of sand dust particles per unit area of glazing surface, size of the particles, b