Analysis of Daily Global Solar Radiation Data for Wuhan

Zhengguo Gong,Yingni Jiang,Hao Yang,Jingbo Liu,S.A Hamouda,M Mirzaei,Z Yu

doi:10.1051/matecconf/20166104013

Abstract

In order to improve knowledge on solar resources, this paper analyses the models correlating daily global solar radiation with sunshine duration for Wuhan, China. Estimated values were compared with measured values in terms of statistical error tests such as mean percentage error (MPE), mean bias error (MBE), root mean square error (RMSE). The model performing best was selected. The global solar radiation estimated from the best model was compared with measured values. It was determined that the predicted values have good agreement with the measured values at high daily global solar radiation.

Highlights

Solar radiation data are essential for both energy efficient building design and solar systems developments
The most widely used method is that of Angström [1], who proposed a linear relationship between the ratio of average daily global radiation to the corresponding value on a completely clear day and the ratio of average daily sunshine duration to the maximum possible sunshine duration
The following correlations were used to express the dependence of global radiation on various parameters: Hg H0

Summary

Introduction

Solar radiation data are essential for both energy efficient building design and solar systems developments. In order to achieve this, several empirical models have been developed to predict the solar radiation all over the world using various parameters. These parameters include extraterrestrial radiation, sunshine hours, mean temperature, maximum temperature, soil temperature, relative humidity, number of rainy days, altitude, latitude and cloudiness [1–10]. The most commonly used parameter for estimating global solar radiation in the publications is sunshine duration. Sunshine duration can be and reliably measured and data are widely available. The most widely used method is that of Angström [1], who proposed a linear relationship between the ratio of average daily global radiation to the corresponding value on a completely clear day and the ratio of average daily sunshine duration to the maximum possible sunshine duration

Objectives

Methods

Conclusion