《Table 2 Optimal tilted angle for fixed grid-connected PV array in Beijing over the decades》

《Table 2 Optimal tilted angle for fixed grid-connected PV array in Beijing over the decades》   提示：宽带有限、当前游客访问压缩模式
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《Impact of solar radiation variation on the optimal tilted angle for fixed grid-connected PV array——case study in Beijing》


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According to the requirements of the Design Code for PV Power Stations[7]，solar energy resource analysis and calculations must use data from at least 10 years.We averaged the data from the Southern Suburb Observatory over 10-year periods to determine the corresponding optimal tilt angle，as listed in Table 2 for the fixed gridconnected solar PV array in Beijing.Fig.4 shows the optimum variation trend.There is a declining trend in the optimal tilt angle，from 38°in the 1960s，remaining stable at 37°in the following four decades，and falling to 36°in2011–2015.Combined with the long-term trends of global solar irradiance，direct horizontal irradiance，and diffuse irradiance，this downward trend in the optimal tilt angle is clearly related to the decreasing global solar irradiance and direct irradiance ratio.

图表编号XD0020052900    严禁用于非法目的
绘制时间2018.10.01
作者Yanbo Shen、Jun Zhang、Peng Guo、Xinwen Wang
绘制单位China Meteorological Administration, Public Meteorological Service Center、Center for Wind and Solar Energy Resources, China Meteorological Administration、Nanjing University of Information Science &Technology Library、China Meteorological Administration, Pu
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