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首页> 外文期刊>Journal of Power and Energy Engineering >Estimation of Global Solar Radiation for Four Selected Sites in Nepal Using Sunshine Hours, Temperature and Relative Humidity
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Estimation of Global Solar Radiation for Four Selected Sites in Nepal Using Sunshine Hours, Temperature and Relative Humidity

机译:利用日照时间,温度和相对湿度估算尼泊尔四个选定地点的全球太阳辐射

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摘要

Rational and accurate solar energy databases, essential for designing, sizing and performing the solar energy systems in any part of the world, are not easily accessible in different localities of Nepal. In this study, daily global solar radiation, sunshine hours and meteorological data for Biratnagar, Kathmandu, Pokhara and Jumla have been used to derive the regression constants. The linear regression technique has been used to develop a model for Biratnagar, Kathmandu, Pokhara and Jumla. The model has calculated the global solar radiation for these locations. The values of global solar radiation estimated by the model are found to be in close agreement with measured values of respective sites. The estimated values were compared with Angstrom-Prescott model and examined using the root mean square error (RMSE), mean bias error (MBE), mean percentage error (MPE), coefficient of regression (R), coefficient of determinant (R2) and correlation coefficient (CC) statistical techniques. Thus, the resultant correlations and linear regression relations may be then used for the locations of similar meteorological/geographical characteristics and also can be used to estimate the missing data of solar radiation for the respective site.
机译:在尼泊尔的不同地区,不容易获得合理,准确的太阳能数据库,这对于设计,调整和执行世界各地的太阳能系统至关重要。在这项研究中,Biratnagar,加德满都,Pokhara和Jumla的每日全球太阳辐射,日照小时数和气象数据已用于得出回归常数。线性回归技术已用于为Biratnagar,加德满都,Pokhara和Jumla建立模型。该模型已计算出这些位置的全球太阳辐射。该模型估计的全球太阳辐射值与各个地点的测量值非常吻合。将估计值与Angstrom-Prescott模型进行比较,并使用均方根误差(RMSE),平均偏差误差(MBE),平均百分比误差(MPE),回归系数(R),行列式系数(R2)和相关系数(CC)统计技术。因此,所得的相关性和线性回归关系然后可以用于类似的气象/地理特征的位置,并且还可以用于估计各个地点的太阳辐射的缺失数据。

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