Optical Efficiency of Linear Fresnel Reflectors in Fixed, Variable and Optimal Distance between Mirrors: Theoretical and Experimental Studies

Document Type : Original Article

Authors

1 Department of Mechanical Engineering, Shahid Bahonar University of Kerman, Kerman, Iran

2 Department of Mechanical Engineering, University of Zabol, Iran

Abstract

In linear Fresnel reflectors, field arrangement has a significant effect on optical efficiency. Three constant, optimal, and variable distance layouts are proposed for Fresdemo solar power plant. The study was carried out by simulation and experiment. The small-scale Fresnel concentrator was designed and built with the capability to implement these three arrangements. The optical efficiency of the solar power plant with optimal variable and constant gap between mirrors were compared, considering fixed conditions for all layouts, including overall dimensions of the plant, width, and number of mirrors and dimensions of the receiver. It was observed that the arrangement with the optimal variable, and fixed distance had the highest to the lowest energy efficiency. Besides, the mirrors farther from the center entail more losses due to the sharper tilt angles, hence more spaces between these mirrors is required to reduce the losses. Meanwhile, the last mirrors in fixed distance arrangement have severe losses of shading and blocking while, they produce almost the same energy as central mirrors in the optimal and variable distance arrangement. The experimental results of the developed prototype showed that the thermal efficiency for the optimal distance was the highest, while it was followed closely by variable distance arrangement. The fixed distance arrangement had the lowest thermal efficiency. In addition, the variable and optimal distance arrangements exhibited an efficiency of 54% and 55%, respectively.

Graphical Abstract

Optical Efficiency of Linear Fresnel Reflectors in Fixed, Variable and Optimal Distance between Mirrors: Theoretical and Experimental Studies

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References

  1. Sadeghi S, Baniasad Askari I. Performance and economic investigation of a combined phosphoric acid fuel cell/organic Rankine cycle/electrolyzer system for sulfuric acid production; Energy‐based organic fluid selection. International Journal of Energy Research. 2020;44(4):2704-25. https://doi.org/10.1002/er.5073
  2. Khaligh Fard S, Ahmadi H, Alizadeh Elizei MH. Electricity Supply Model of Conventional Residential Buildings in Tehran with Priority on Renewable Energy Using Adaptive Fuzzy-neural Inference System. International Journal of Engineering, Transactions A: Basics. 2023;36(10):1793-814. 10.5829/ije.2023.36.10a.07
  3. Assari M, Mirzavand R, Basirat Tabrizi H, Jafar Gholi Beik A. Effect of steps height and glass cover angle on heat transfer performance for solar distillation: Numerical study. International Journal of Engineering, Transactions A: Basics. 2022;35(1):237-47. https://doi.org/10.5829/ije.2022.35.01A.23
  4. Kalogirou SA. Solar energy engineering: processes and systems: Academic press; 2013.
  5. Zhang H, Baeyens J, Degrève J, Cacères G. Concentrated solar power plants: Review and design methodology. Renewable and sustainable energy reviews. 2013;22:466-81. https://doi.org/10.1016/j.rser.2013.01.032
  6. Sadeghi S, Askari IB. Parametric thermodynamic analysis and economic assessment of a novel solar heliostat-molten carbonate fuel cell system for electricity and fresh water production. Environmental Science and Pollution Research. 2022;29(4):5469-95. https://doi.org/10.1007/s11356-021-16035-2
  7. Askari IB, Calise F, Vicidomini M. Design and comparative techno-economic analysis of two solar polygeneration systems applied for electricity, cooling and fresh water production. Energies. 2019;12(22):4401. https://doi.org/10.3390/en12224401
  8. Negi B, Kandpal T, Mathur S. Designs and performance characteristics of a linear Fresnel reflector solar concentrator with a flat vertical absorber. Solar & wind technology. 1990;7(4):379-92. https://doi.org/10.1016/0741-983X(90)90023-U
  9. Bellos E, Tzivanidis C, Moghimi M. Reducing the optical end losses of a linear Fresnel reflector using novel techniques. Solar Energy. 2019;186:247-56. https://doi.org/10.1016/j.solener.2019.05.020
  10. Ma J, Chang Z, editors. Understanding the effects of end-loss on linear Fresnelcollectors. IOP Conference Series: Earth and Environmental Science; 2018: IOP Publishing. 10.1088/1755-1315/121/5/052052
  11. Mokhtar G, Boussad B, Noureddine S. A linear Fresnel reflector as a solar system for heating water: theoretical and experimental study. Case Studies in Thermal Engineering. 2016;8:176-86. https://doi.org/10.1016/j.csite.2016.06.006
  12. Said Z, Ghodbane M, Tiwari AK, Ali HM, Boumeddane B, Ali ZM. 4E (Energy, Exergy, Economic, and Environment) examination of a small LFR solar water heater: An experimental and numerical study. Case Studies in Thermal Engineering. 2021;27:101277. https://doi.org/10.1016/j.csite.2021.101277
  13. Bellos E. Progress in the design and the applications of linear Fresnel reflectors–A critical review. Thermal Science and Engineering Progress. 2019;10:112-37. https://doi.org/10.1016/j.tsep.2019.01.014
  14. Negi B, Mathur S, Kandpal T. Optical and thermal performance evaluation of a linear Fresnel reflector solar concentrator. Solar & wind technology. 1989;6(5):589-93. https://doi.org/10.1016/0741-983X(89)90095-7
  15. Mathur S, Kandpal T, Negi B. Optical design and concentration characteristics of linear Fresnel reflector solar concentrators—I. Mirror elements of varying width. Energy Conversion and Management. 1991;31(3):205-19. https://doi.org/10.1016/0196-8904(91)90075-T
  16. Mathur S, Kandpal T, Negi B. Optical design and concentration characteristics of linear Fresnel reflector solar concentrators—II. Mirror elements of equal width. Energy Conversion and Management. 1991;31(3):221-32. https://doi.org/10.1016/0196-8904(91)90076-U
  17. Beltagy H. The effect of glass on the receiver and the use of two absorber tubes on optical performance of linear fresnel solar concentrators. Energy. 2021;224:120111. https://doi.org/10.1016/j.energy.2021.120111
  18. El Gharbi N, Derbal H, Bouaichaoui S, Said N. A comparative study between parabolic trough collector and linear Fresnel reflector technologies. Energy Procedia. 2011;6:565-72. https://doi.org/10.1016/j.egypro.2011.05.065
  19. Abbas R, Montes M, Piera M, Martínez-Val J. Solar radiation concentration features in Linear Fresnel Reflector arrays. Energy Conversion and Management. 2012;54(1):133-44. https://doi.org/10.1016/j.enconman.2011.10.010
  20. Abbas R, Martínez-Val J. Analytic optical design of linear Fresnel collectors with variable widths and shifts of mirrors. Renewable Energy. 2015;75:81-92. https://doi.org/10.1016/j.renene.2014.09.029
  21. Zhu G. Development of an analytical optical method for linear Fresnel collectors. Solar Energy. 2013;94:240-52. https://doi.org/10.1016/j.solener.2013.05.003
  22. Ghodbane M, Boumeddane B, Said Z, Bellos E. A numerical simulation of a linear Fresnel solar reflector directed to produce steam for the power plant. Journal of cleaner production. 2019;231:494-508. https://doi.org/10.1016/j.jclepro.2019.05.201
  23. Lin M, Sumathy K, Dai Y, Wang R, Chen Y. Experimental and theoretical analysis on a linear Fresnel reflector solar collector prototype with V-shaped cavity receiver. Applied Thermal Engineering. 2013;51(1-2):963-72. https://doi.org/10.1016/j.applthermaleng.2012.10.050.
  24. Morin G, Dersch J, Platzer W, Eck M, Häberle A. Comparison of linear Fresnel and parabolic trough collector power plants. Solar energy. 2012;86(1):1-12. https://doi.org/10.1016/j.solener.2011.06.020
  25. Heimsath A, Bern G, Van Rooyen D, Nitz P. Quantifying optical loss factors of small linear concentrating collectors for process heat application. Energy Procedia. 2014;48:77-86. https://doi.org/10.1016/j.egypro.2014.02.010
  26. Santos AV, Canavarro D, Horta P, Collares-Pereira M. An analytical method for the optical analysis of Linear Fresnel Reflectors with a flat receiver. Solar Energy. 2021;227:203-16. https://doi.org/10.1016/j.solener.2021.08.085
  27. Sharma V, Khanna S, Nayak JK, Kedare SB. Effects of shading and blocking in compact linear fresnel reflector field. Energy. 2016;94:633-53. https://doi.org/10.1016/j.energy.2015.10.098
  28. Montes MJ, Rubbia C, Abbas R, Martínez-Val JM. A comparative analysis of configurations of linear Fresnel collectors for concentrating solar power. Energy. 2014;73:192-203. https://doi.org/10.1016/j.energy.2014.06.010
  29. Roostaee A, Ameri M. Effect of Linear Fresnel Concentrators field key parameters on reflectors configuration, Trapezoidal Cavity Receiver dimension, and heat loss. Renewable Energy. 2019;134:1447-64. https://doi.org/10.1016/j.renene.2018.09.053
  30. Roostaee A, Ameri M. A comparative study of different optimised mirrors layouts of Linear Fresnel concentrators on annual energy and exergy efficiencies. International Journal of Ambient Energy. 2022;43(1):2627-44.
  31. Kuchkarov A, Abdumuminov A, Abdurakhmanov A. Developing a Design of a Composite Linear Fresnel Mirror Concentrating System. Applied Solar Energy. 2020;56:192-7. 10.3103/S0003701X20030056
  32. Sharma V, Nayak JK, Kedare SB. Effects of shading and blocking in linear Fresnel reflector field. Solar Energy. 2015;113:114-38.
  33. Santos AV, Canavarro D, Collares-Pereira M. The gap angle as a design criterion to determine the position of linear Fresnel primary mirrors. Renewable Energy. 2021;163:1397-407. https://doi.org/10.1016/j.renene.2020.09.017
  34. Kincaid N, Mungas G, Kramer N, Zhu G. Sensitivity analysis on optical performance of a novel linear Fresnel concentrating solar power collector. Solar Energy. 2019;180:383-90. https://doi.org/10.1016/j.solener.2019.01.054
  35. Said Z, Ghodbane M, Hachicha AA, Boumeddane B. Optical performance assessment of a small experimental prototype of linear Fresnel reflector. Case Studies in Thermal Engineering. 2019;16:100541. https://doi.org/10.1016/j.csite.2019.100541
  36. Mathur S, Negi B, Kandpal T. Geometrical designs and performance analysis of a linear Fresnel reflector solar concentrator with a flat horizontal absorber. International journal of energy research. 1990;14(1):107-24. https://doi.org/10.1002/er.4440140111
  37. Goel A, Manik G. Step towards sustainability: Techno-economic optimization of a parabolic trough solar collector using multi-objective genetic algorithm. Thermal Science and Engineering Progress. 2023;37:101539. https://doi.org/10.1016/j.tsep.2022.101539
  38. Rungasamy A, Craig K, Meyer JP. A review of linear Fresnel primary optical design methodologies. Solar Energy. 2021;224:833-54. https://doi.org/10.1016/j.solener.2021.06.021
International Journal of Engineering
Volume 37, Issue 2
TRANSACTIONS B: Applications
February 2024
Pages 283-297

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