Establishing a diffuse solar radiation model for determining the optimum tilt angle of solar surfaces in Tabass, Iran

Khorasanizadeh, Hossein; Mohammadi, Kasra; Mostafaeipour, Ali

doi:10.1016/j.enconman.2013.11.048

Cited by 123 publications

(53 citation statements)

References 25 publications

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“…The average values of the estimations by these models for every K T and n/N values are used to calibrate the new models. Here, the purpose is to eliminate the differences among model predictions since the selection of the appropriate model is impossible without experimental data [10,42,43].…”

Section: Resultsmentioning

confidence: 99%

Models for the estimation of diffuse solar radiation for typical cities in Turkey

Bakırcı

2015

Energy

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Section: Resultsmentioning

confidence: 99%

Models for the estimation of diffuse solar radiation for typical cities in Turkey

Bakırcı

2015

Energy

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“…Therefore solving the diffuse radiation through diffuse radiation models is very important. [1][2][3][4][5] Researchers have developed many empirical equations to estimate determine diffuse component using the empirical models including sunshine duration, global solar radiation and extraterrestrial solar radiation. The typical models are Temps and Coulson model, Liu and Jordan model, Page model and Erbs model [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Photovoltaic forecasting through establishing solar models without using diffuse radiation measurement in Beijing

Bian³

et al. 2015

International Conference on Renewable Power Generation (RPG 2015)

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Solar diffuse radiation data is one of the most important parameters for assessing solar energy resource and designing grid connected photovoltaic system, due to the characteristics of ground solar radiation change significantly in recent years, previous solar beam-diffuse radiation separated model has been unable to true reflect the variation of solar radiation. A method for estimating diffuse radiation fraction Hd/H is proposed. Take Beijing as an example, according to the local measured radiation data during 10 years, with localized revising of Erbs, a new model is built. Then the relative number of sunshine hours S/S0 is introduced to establish the new regression equation with better fitting effect. Furthermore, the accuracy of model is validated using measured data consists of solar radiation and sunshine hours of 2011. Comparison of four models is performed through error analysis. It is found that the model including two variable is of high prediction accuracy. In most months, the error is lower than 10% The new model more in line with the radiation characteristics of the local actual, for photovoltaic system design has the reference significance.

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“…Afterward, the amounts of solar radiation on the inclined surfaces were measured and the results of the experiment were compared with the estimated amount of the direct solar radiation and the diffuse solar radiation, the values of which were calculated separately. Khorasanizadeh et al [5] proposed an algorithm for calculating the solar radiation on inclined surfaces according to the installation angle of the solar collector in Tabass, Iran. Corredor [6] measured the solar radiation on inclined surfaces in seven areas of Columbia and then compared the measured results with the results calculated from simulations.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Optimum Solar Collector Installation Angle from the Viewpoint of Energy Use Patterns

et al. 2017

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While solar energy is the most efficient energy source for heating, many problems can occur when the capacity selection of the system is wrong: a definite possibility in a place where the seasonal climate change is large, such as Korea. For example, if a system is designed for use in the winter, the system will be overloaded if it does not discard the energy it collects during the summer months. Conversely, if the capacity of the system is in accordance with the summer season demand, it will be necessary to input supplementary energy in the winter season. Solar energy also depends on the altitude and azimuth of the sun, and the amount of energy collected on the slope depends on the latitude of the area in which it is installed. Therefore, this study is divided into investigating the collection energy, heat radiation energy and auxiliary energy input according to the installation angle of the solar collector and the capacity of the heat storage tank according to latitude of the installation area. To this end, we formulate appropriate energy equations. Simulation coding was performed to track the temperature changes in each part. Additionally, we considered the amount of solar energy that can be effectively used, not simply the amount of solar energy collected, by substituting the actual hot water usage schedule.

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Establishing a diffuse solar radiation model for determining the optimum tilt angle of solar surfaces in Tabass, Iran

Cited by 123 publications

References 25 publications

Models for the estimation of diffuse solar radiation for typical cities in Turkey

Models for the estimation of diffuse solar radiation for typical cities in Turkey

Photovoltaic forecasting through establishing solar models without using diffuse radiation measurement in Beijing

Analysis of the Optimum Solar Collector Installation Angle from the Viewpoint of Energy Use Patterns

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