Solar flat plate collector enhanced by two reflectors: optimum tilts of reflectors

Authors

DOI:

https://doi.org/10.20998/2074-272X.2022.5.11

Keywords:

booster reflectors, flat plate collector, optimum tilts, solar irradiation

Abstract

Introduction. In some solar concentrating system applications, in which the incoming sunlight is augmented by using commercial flat plate reflectors placed on different sides of the planar collector, it is very important to choose the optimum tilts of boosters (attached edge-to-edge on the top and bottom sides of the solar collector) for each month, to enhance their received solar irradiation over the year in the southern Algeria. The novelty of the proposed work consists of the development of a novel mathematical model in which the reference of the reflector’s tilt angles is the collector plane, and optimal tilts are optimized on the average day of each month. Purpose. This paper proposes a novel analytical model of two identical planer reflectors, placed on the top and bottom of a latitude tilted flat plate solar collector, for optimizing their optimal inclination angles during the daytime throughout the year in Ouargla city, southeast of Algeria. Methods. Optimal tilt angles of reflectors were obtained by searching for the optimum captured solar irradiation on the collector’s surface from each reflector in the representative day of each month of the year. After that, the obtained tilts were used for calculating incoming solar irradiation on the received area and comparing them to the solar collector without reflectors. Results. The findings of this paper showed that the reflector’s inclination angles were variable from one month to another in which the upper reflector’s tilts reached its maximum in June and minimum in December, contrarily for the lower reflector. Again, an increase of 28.05 % in the daily received solar irradiation on the collector surface with reflectors compared to the conventional one.

Author Biographies

M. Y. Rachedi, University of Ouargla

PhD, Assistant Professor, Department of Electrical Engineering, Faculty of Applied Sciences, LENREZA Laboratory

D. Bechki, University of Ouargla

Doctor of Physics, Professor, Department of Physics, Faculty of Mathematics & Matter Sciences, LENREZA Laboratory

Y. Marif, University of Ouargla

Doctor of Physics, HDR, MCA, Department of Physics, Faculty of Mathematics & Matter Sciences, LENREZA Laboratory

H. Bouguetaia, University of Ouargla

Doctor of Physics, Professor, Department of Physics, Faculty of Mathematics & Matter Sciences, LENREZA Laboratory

References

Saeed H., Mehmood T., Khan F.A., Shah M.S., Ullah M.F., Ali H. An improved search ability of particle swarm optimization algorithm for tracking maximum power point under shading conditions. Electrical Engineering & Electromechanics, 2022, no. 2, pp. 23-28. doi: https://doi.org/10.20998/2074-272X.2022.2.04.

Praveen Kumar T., Ganapathy S., Manikandan M. Improvement of voltage stability for grid connected solar photovoltaic systems using static synchronous compensator with recurrent neural network. Electrical Engineering & Electromechanics, 2022, no. 2, pp. 69-77. doi: https://doi.org/10.20998/2074-272X.2022.2.10.

Akbar F., Mehmood T., Sadiq K., Ullah M.F. Optimization of accurate estimation of single diode solar photovoltaic parameters and extraction of maximum power point under different conditions. Electrical Engineering & Electromechanics, 2021, no. 6, pp. 46-53. doi: https://doi.org/10.20998/2074-272X.2021.6.07.

Sahraoui H., Mellah H., Drid S., Chrifi-Alaoui L. Adaptive maximum power point tracking using neural networks for a photovoltaic systems according grid. Electrical Engineering & Electromechanics, 2021, no. 5, pp. 57-66. doi: https://doi.org/10.20998/2074-272X.2021.5.08.

Garg H.P., Hrishikesan D.S. Enhancement of solar energy on flat-plate collector by plane booster mirrors. Solar Energy, 1988, vol. 40, no. 4, pp. 295-307. doi: https://doi.org/10.1016/0038-092X(88)90002-3.

Bhowmik H., Amin R. Efficiency improvement of flat plate solar collector using reflector. Energy Reports, 2017, vol. 3, pp. 119-123. doi: https://doi.org/10.1016/j.egyr.2017.08.002.

Huang B.J., Sun F.S. Feasibility study of one axis three positions tracking solar PV with low concentration ratio reflector. Energy Conversion and Management, 2007, vol. 48, no. 4, pp. 1273-1280. doi: https://doi.org/10.1016/j.enconman.2006.09.020.

Bahaidarah H., Tanweer B., Gandhidasan P., Rehman S. A Combined Optical, Thermal and Electrical Performance Study of a V-Trough PV System – Experimental and Analytical Investigations. Energies, 2015, vol. 8, no. 4, pp. 2803-2827. doi: https://doi.org/10.3390/en8042803.

Baig H., Jani R., Markam B.K., Maiti S., Mallick T.K. Modelling and experimental analysis of a seasonally tracked V-trough PV/T system in India. Solar Energy, 2018, vol. 170, pp. 618-632. doi: https://doi.org/10.1016/j.solener.2018.06.018.

Kostić L.T., Pavlović Z.T. Optimal position of flat plate reflectors of solar thermal collector. Energy and Buildings, 2012, vol. 45, pp. 161-168. doi: https://doi.org/10.1016/j.enbuild.2011.10.059.

Rahman R., Khan M.F. Performance enhancement of PV Solar System by mirror reflection. International Conference on Electrical & Computer Engineering (ICECE 2010), 2010, pp. 163-166. doi: https://doi.org/10.1109/ICELCE.2010.5700652.

Bione J., Vilela O.C., Fraidenraich N. Comparison of the performance of PV water pumping systems driven by fixed, tracking and V-trough generators. Solar Energy, 2004, vol. 76, no. 6, pp. 703-711. doi: https://doi.org/10.1016/j.solener.2004.01.003.

Tabet I., Touafek K., Khelifa A., Baissi M.T., Bellel N. Optimization tilts angle of flat plate reflectors placed in left-right side of Hybrid Photovoltaic thermal collector. 2016 International Renewable and Sustainable Energy Conference (IRSEC), 2016, pp. 343-347. doi: https://doi.org/10.1109/IRSEC.2016.7983946.

Rachedi M.Y., Bechki D., Marif Y., Bouguettaia H. Solar Flat Plate Collector Enhanced by Two Reflectors: Optimum Tilts of Reflectors. 2022 1st International Conference on Modern Electrical Engineering and Technology (CIETM), 2022.

Capderou M. Atlas Solaire de l’Algérie [Solar Atlas of Algeria], Tome 1, vols. 1 and 2, Algeria, University Publication Office, 1987. 399 p. (Fra).

Duffie J.A., Beckman W.A., Blair N. Solar Engineering of Thermal Processes, Photovoltaics and Wind. 5th ed., New York, Willey Publ., 2020. 906 p.

Klein S.A. Calculation of monthly average insolation on tilted surfaces. Solar Energy, 1977, vol. 19, no. 4, pp. 325-329. doi: https://doi.org/10.1016/0038-092X(77)90001-9.

Downloads

Published

2022-09-06

How to Cite

Rachedi, M. Y., Bechki, D., Marif, Y., & Bouguetaia, H. (2022). Solar flat plate collector enhanced by two reflectors: optimum tilts of reflectors. Electrical Engineering & Electromechanics, (5), 67–70. https://doi.org/10.20998/2074-272X.2022.5.11

Issue

Section

Power Stations, Grids and Systems