Book ChapterDOI
Statistical Analysis of Short-Term Solar Radiation Data over Aligarh (India)
Basharat Jamil,Naiem Akhtar +1 more
- pp 937-948
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TLDR
A new set of regression coefficients for the Angstrom-type correlation for estimation of monthly average daily solar radiation on horizontal surfaces in Aligarh (India) has been presented in this paper.Abstract:
This study aims at exploring solar radiation in the Aligarh region of India (latitude, 27.88°N; longitude, 78.08°E), due to the fact that measured solar radiation data for this region is scarce. A new set of regression coefficients for the Angstrom-type correlation for estimation of monthly average daily solar radiation on horizontal surfaces in Aligarh (India) has been presented. The regression coefficients were applied to the data of bright sunshine hours obtained from the Solar Energy Laboratory, Department of Mechanical Engineering, Aligarh Muslim University, during the period of September 2013 to February 2014. The results were compared with the correlations of other researchers available in literature and solar radiation data obtained from measurements. Correlation for the estimation of monthly average diffuse solar radiation is also developed in terms of the ratio of diffuse to global radiation. The performances of the proposed correlations were analyzed by mean bias error and root mean square error. A good agreement was found between the estimated and measured values following the application of the new proposed correlations. Thus, monthly average global, diffuse, and direct solar radiation on a horizontal surface in the Aligarh region of India has been obtained.read more
Citations
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Calculation of monthly average insolation on tilted surfaces
TL;DR: A simple method of estimating the average daily radiation for each calendar month on surfaces facing directly towards the equator has been presented by Liu and Jordan as discussed by the authors, verified with experimental measurements and extended to allow calculation of monthly average radiation on surfaces of a wide range of orientations.
Journal ArticleDOI
Performance improvement of empirical models for estimation of global solar radiation in India: A k-fold cross-validation approach
TL;DR: In this article, global solar radiation is estimated based on sunshine duration, which has been collected from the Indian Meteorological Department (Pune, India) for the period 1986-2000 25 model forms were selected from the literature which correlates the clearness index with sunshine duration The coefficients of models are extracted from the data k-fold cross-validation is then employed to improve the performance of the models Data is split into k-groups with each group containing the same amount of data (k-1) groups are utilized for the development of models and the rest one group is utilized
Journal ArticleDOI
Comparison of empirical models to estimate monthly mean diffuse solar radiation from measured data: Case study for humid-subtropical climatic region of India
Basharat Jamil,Naiem Akhtar +1 more
TL;DR: In this paper, the performance comparison of the models to estimate monthly mean diffuse solar radiation on a horizontal surface for Humid-Subtropical Climatic Region of India was demonstrated.
Journal ArticleDOI
Estimation of diffuse solar radiation in humid-subtropical climatic region of India: Comparison of diffuse fraction and diffusion coefficient models
Basharat Jamil,Naiem Akhtar +1 more
TL;DR: In this article, measured data of solar radiation were utilized to develop sixteen empirical models for estimation of monthly mean diffuse solar radiation with single input predictor as clearness index, which can be used to evaluate diffuse solar radiations in the region considered.
Journal ArticleDOI
Comparative analysis of diffuse solar radiation models based on sky-clearness index and sunshine period for humid-subtropical climatic region of India: A case study
Basharat Jamil,Naiem Akhtar +1 more
TL;DR: In this paper, a long-term solar radiation assessment was performed for three years (September 2013 to August 2016) in Humid-Subtropical Climatic Region of India for the city of Aligarh (27.88°N, 78.08°E).
References
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Book
Solar engineering of thermal processes
TL;DR: In this article, the authors present an active and passive building heating system for solar thermal power systems, where the active system is designed by f--chart and the passive one by Utilizability Methods.
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Solar Engineering of Thermal Processes
TL;DR: In this article, the authors present an active and passive building heating system for solar thermal power systems, where the active system is designed by f--chart and the passive one by Utilizability Methods.
Journal ArticleDOI
Solar and terrestrial radiation. Report to the international commission for solar research on actinometric investigations of solar and atmospheric radiation
Calculation of monthly average insolation on tilted surfaces
TL;DR: A simple method of estimating the average daily radiation for each calendar month on surfaces facing directly towards the equator has been presented by Liu and Jordan as discussed by the authors, verified with experimental measurements and extended to allow calculation of monthly average radiation on surfaces of a wide range of orientations.
Journal ArticleDOI
Calculation of monthly average insolation on tilted surfaces
TL;DR: A simple method of estimating the average daily radiation for each calendar month on surfaces facing directly towards the equator has been presented by Liu and Jordan as mentioned in this paper, verified with experimental measurements and extended to allow calculation of monthly average radiation on surfaces of a wide range of orientations.