Evaluation and Comparison of Temperature-Based Models for The Prediction of The Monthly Average of Daily Global Solar Radiation for Baghdad City- Iraq

Ajil, Awras H.

doi:10.24996/ijs.2020.61.3.9

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…High zenith angles result in high air mass and more interaction between the solar radiation and the atmosphere [4]. There are many simple formulas to estimate the Global Horizontal Irradiance (GHI), for instance [17], [18]: It is worth mentioning that there are many other models that estimate the GHI depending on variables other than the zenith angle, such as e air temperature [19].…”

Section: Solar Irradiance Reaching the Solar Panelsmentioning

confidence: 99%

A Model to Compute the Solar Parameters in Relation to Determining the Optimal Angles for Solar Panels in Many Locations in Iraq

Roomi

Nemah²,

Shubbar³

2021

eijs

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Directing solar panels in a way that collects the largest possible amount of solar energy is still attracting a lot of attention due to the continuous need to get clean, inexpensive renewable energy. Iraq is one of the countries characterized by the abundance of solar energy but the investment in this field has been far below ambition. In this study, an application developed with the visual basic programing language was used to compute precisely various solar angles and parameters , as a powerful tool for engineers and researchers. The outputs of the model were tested and discussed in detail. The air mass values were also computed for three cities: Mosul, Baghdad, and Basra. The results showed that the best time to acquire the solar radiation would be from 10 am to 2 pm (local time), the period that has the lowest values of air mass. Additional useful calculations that can be estimated by the application were the terrestrial irradiances from four empirical models for the clear sky: Roledo-Soler, Adnot, Kasten – Czeplak, and Berger-Duffie. The calculated values of terrestrial irradiance were compared with observed data measured by automatic weather station. The application simulated the actual values with some deviations due to the existence of clouds and aerosols. Kasten – Czeplak model was recommended to be used in Iraq since it was the best model to simulate the measured values. The comparison between the model’s output and the measured values on a daily basis on the 21st of June showed good agreement. The study suggested that the solar panels should face the south direction with a change of the tilt angle of the panels from 25o in June to a value of 60o each month towards the coldest months by an increment of 5 degrees.

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Section: Solar Irradiance Reaching the Solar Panelsmentioning

confidence: 99%

A Model to Compute the Solar Parameters in Relation to Determining the Optimal Angles for Solar Panels in Many Locations in Iraq

Roomi

Nemah²,

Shubbar³

2021

eijs

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“…Several models are proposed in the literature for hourly solar irradiation estimation. They use measured meteorological parameters such as temperature, humidity, wind, extraterrestrial solar irradiation, and sunshine hours [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Clustered Adaptive-Network-Based Fuzzy Inference System Model for Hourly Solar Irradiation Estimation

Benmouiza

2023

RRST-EE

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Solar energy occupies an important place among the various sources of renewable energy. A precise knowledge of the distribution of solar irradiation in a specified location is needed before any solar irradiation system installation. This paper introduces a nonlinear clustering, adaptive-network-based fuzzy inference system (ANFIS) model to estimate the hourly solar irradiation data using meteorological inputs and clustering algorithms: grid partitioning, subtractive clustering, and fuzzy c-means. Comparing these clustering algorithms is investigated to classify the inputs into clusters, which helps the solar irradiation estimation model build better. This method's advantage is understanding and simplifying the nonlinearity presented in the input’s datasets. Moreover, the FCM algorithm gives the best results from comparing the testing data; the RMSE is 43.2274 W/m2, and MSE equals 2001.34 W/m2 with an R2 equal to 0.9893.

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Evaluation and Comparison of Temperature-Based Models for The Prediction of The Monthly Average of Daily Global Solar Radiation for Baghdad City- Iraq

Cited by 2 publications

References 7 publications

A Model to Compute the Solar Parameters in Relation to Determining the Optimal Angles for Solar Panels in Many Locations in Iraq

A Model to Compute the Solar Parameters in Relation to Determining the Optimal Angles for Solar Panels in Many Locations in Iraq

Nonlinear Clustered Adaptive-Network-Based Fuzzy Inference System Model for Hourly Solar Irradiation Estimation

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