Analysis of Long-Term Global Solar Radiation, Sunshine Duration and Air Temperature Data of Ankara and Modeling with Curve Fitting Methods
Journal Title: Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji - Year 2018, Vol 6, Issue 1
Abstract
The information about solar parameters is important in the installation of photovoltaic energy systems that are reliable, environmentally friendly and sustainable. In this study, initially, long-term global solar radiation, sunshine duration and air temperature data of Ankara are analyzed on the annual, monthly and daily basis, elaborately. Afterwards, three different empirical methods that are polynomial, Gaussian and Fourier are used for the purpose of modeling long-term monthly total global solar radiation, monthly total sunshine duration and monthly mean air temperature data. The coefficient of determination and the root mean square error are computed as statistical test metrics in order to compare data modeling performance of the mentioned empirical methods. The empirical methods that provide the best results enable to model the solar characteristics of Ankara more accurately and the achieved outcomes constitute the significant resource for other locations with similar climatic conditions.
Authors and Affiliations
Mehmet YEŞİLBUDAK, Medine ÇOLAK, Ramazan BAYINDIR
Design and construction of low cost sensor and GPS based autonomous unmanned ground vehicle
In recent years, unmanned vehicles have been quite popular for the researchers and those vehicles are still being developed by the researchers and engineers. Unmanned vehicle must do all operations without operator and m...
Investigation of Earthquake Behavior of Kars Kümbet Mosque
Historical mosques constitute the important samples of cultural heritage. In the present study, Kumbet mosque, which is located in Kars, was examined for its structural behavior under earthquake accelerations. The histor...
Systematic Evaluation of Technological New Building Products in Decision Making in Construction Secto
The strategic role of the construction sector has been developed with time, cost and quality dimensions as well as by accepting technological innovations as the fourth dimension of the competition. The effect of new prod...
Reduced Order Extended Kalman Filter based Parameter Estimation for Induction Motor Drives
In this study, a speed-sensored reduced-order extended Kalman filter (RO-EKF) based estimator is designed for direct vector control system of induction motors. The rotor resistance, stator resistance, and magnetizing ind...
The Effects of Shallow Cryogenic Process On The Mechanical Properties of AISI 4140 Steel
In this study, shallow cryogenic treatments were carried out for various holding time to AISI 4140 steel and the effects of heat treatment parameters on wear behavior, impact strength and tensile strength were investigat...