Heat Transfer Augmentation of Concentrated Solar Absorber Using Modified Surface Contour

  • Ramalingam Senthil Department of Mechanical Engineering, SRM Institute of Science and Technology, Kattankulathur, Chennai, India
  • Arvind Chezian Department of Mechanical Engineering, SRM Institute of Science and Technology, Kattankulathur, Chennai, India
  • Zackir Hussain Ajmal Arsath Department of Mechanical Engineering, SRM Institute of Science and Technology, Kattankulathur, Chennai, India
Keywords: parabolic dish, solar absorber, surface cavity, energy efficiency, exergy efficiency


This work aims to compare the cavity surface contour’s thermal performance to that of the solar absorber’s plain surface contour for Scheffler type parabolic dish collectors. The absorber is tested for the temperature range up to 600°C without working fluid and 180°C with the working fluid. The modified absorber surface's thermal performance is compared with the flat surface absorber with and without heat transfer fluid. The peak temperature reached by the surface modified absorber (534°C) is about 8.6% more than that of the unmodified absorber (492°C) during an outdoor test without fluid. The energy efficiency of cavity surface absorber and plain surface absorber are 67.65% and 61.84%, respectively. The contoured cavity surface produces a more uniform temperature distribution and a higher heat absorption rate than the plain surface. The results are beneficial to the design of high-temperature solar absorbers for concentrated solar collectors.


S. A. Sakhaei and M. S. Valipour, “Performance Enhancement Analysis of the Flat Plate Collectors: A Comprehensive Review,” Renewable and Sustainable Energy Reviews, vol. 102, pp. 186-204, March 2019.

P. K. Pathak, P. Chandra, and G. Raj, “Comparative Analysis of Modified and Convectional Dual Purpose Solar Collector: Energy and Exergy Analysis,” Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, pp. 1-17, November 2019.

S. Luque, G. Menéndez, M. Roccabruna, J. González-Aguilar, L. Crema, and M. Romero, “Exploiting Volumetric Effects in Novel Additively Manufactured Open Solar Receivers,” Solar Energy, vol. 174, pp. 342-351, November 2018.

S. R. Atchuta, S. Sakthivel, and H. C. Barshilia, “Nickel Doped Cobaltite Spinel as a Solar Selective Absorber Coating for Efficient Photothermal Conversion with a Low Thermal Radiative Loss at High Operating Temperatures,” Solar Energy Materials and Solar Cells, vol. 200, article no. 109917, September 2019.

M. R. Assari, H. B. Tabrizi, I. Jafari, and E. Najafpour, “An Energy and Exergy Analysis of Water and Air with Different Passage in a Solar Collector,” Energy Sources Part A: Recovery, Utilization, and Environmental Effects, vol. 36, no. 7, pp. 747-754, February 2014.

B. Lakshmipathy and B. Sivaraman, “Performance Analysis on Working Parameters of a Flat Plate Solar Cavity Collector,” International Energy Journal, vol. 16, no. 1, pp. 1-9, March 2016.

R. D. Jilte, S. B. Kedare, and J. K. Nayak, “Natural Convection and Radiation Heat Loss from Open Cavities of Different Shapes and Sizes used with Dish Concentrator,” Mechanical Engineering Research, vol. 3, no. 1, pp. 25, January 2013.

R. Senthil and M. Cheralathan, “Effect of Non-Uniform Temperature Distribution on Surface Absorption Receiver in Parabolic Dish Solar Concentrator,” Thermal Science, vol. 21, no. 5, pp. 2011-2019, 2017.

R. Senthil and M. Cheralathan, “Enhancement of the Thermal Energy Storage Capacity of a Parabolic Dish Concentrated Solar Receiver Using Phase Change Materials,” Journal of Energy Storage, vol. 25, article no. 100841, October 2019.

M. Abuşka, “Energy and Exergy Analysis of Solar Air Heater having New Design Absorber Plate with Conical Surface,” Applied Thermal Engineering, vol. 131, pp. 115-124, February 2018.

W. H. Khalil, Z. A. H. Obaid, and H. K. Dawood, “Exergy Analysis of Single-Flow Solar Air Collectors with Different Configurations of Absorber Plates,” Heat Transfer-Asian Research, vol. 48, no. 8, pp. 3600-3616, August 2019.

B. Das, J. D. Mondol, S. Debnath, M. Smyth, and A. Zacharopoulos, “Effect of the Absorber Surface Roughness on the Performance of a Solar Air Collector: An Experimental Investigation,” Renewable Energy, vol. 152, pp. 567-578, June 2020.

S. K. Jain, G. D. Agrawal, and R. A. Misra, “A Detailed Review on Various V-Shaped Ribs Roughened Solar Air Heater,” Heat and Mass Transfer, vol. 55, pp. 3369-3412, June 2019.

N. F. Jouybari and T. S. Lundström, “Performance Improvement of a Solar Air Heater by Covering the Absorber Plate with a Thin Porous Material,” Energy, vol. 190, article no.116437, January 2020.

M. I. Hussain and G. H. Lee, “Numerical and Experimental Heat Transfer Analyses of a Novel Concentric Tube Absorber under Non-Uniform Solar Flux Condition,” Renewable Energy, vol. 103, pp. 49-57, April 2017.

M. Abuseada and N. Ozalp, “Experimental and Numerical Study on a Novel Energy Efficient Variable Aperture Mechanism for a Solar Receiver,” Solar Energy, vol.197, pp. 396-410, February 2020.

H. Cherif, A. Ghomrassi, J. Sghaier, H. Mhiri, and P. Bournot, “A Receiver Geometrical Details Effect on a Solar Parabolic Dish Collector Performance,” Energy Reports, vol. 5, pp. 882-897, November 2019.

R. Senthil, “Effect of Charging of Phase Change Material in Vertical and Horizontal Rectangular Enclosures in a Concentrated Solar Receiver,” Case Studies in Thermal Engineering, vol. 21, article no. 100653, October 2020.

T. Venkatachalam and M. Cheralathan, “Effect of Aspect Ratio on Thermal Performance of Cavity Receiver for Solar Parabolic dish concentrator: An Experimental Study,” Renewable Energy, vol. 139, pp. 573-581, August 2019.

L. Xiao, F. W. Guo, S. Y. Wu, and Z. L. Chen, “A Comprehensive Simulation on Optical and Thermal Performance of a Cylindrical Cavity Receiver in a Parabolic Dish Collector System,” Renewable Energy, vol. 145, pp. 878-892, January 2020.

R. Senthil and M. Cheralathan, “Effect of the Phase Change Material in a Solar Receiver on Thermal Performance of Parabolic Dish Collector,” Thermal Science, vol. 21, no. 6 Part B, pp. 2803-2812, 2017.

A. Solé, Q. Falcoz, L. F. Cabeza, and P. Neveu, “Geometry Optimization of a Heat Storage System for Concentrated Solar Power Plants (CSP),” Renewable Energy, vol. 123, pp. 227-235, August 2018.

M. A. Bashir and A. Giovannelli, “Design Optimization of the Phase Change Material Integrated Solar Receiver: A Numerical Parametric Study,” Applied Thermal Engineering, vol. 160, article no. 114008, September 2019.

A. P. Shukla, B. Gupta, R. Kushwaha, and P. K. Jhinge, “Thermal Performance of Solar Air Heater Having Triangular-Shaped Hollow Bodies Inside,” Advances in Fluid and Thermal Engineering, Lecture Notes in Mechanical Engineering, pp 147-155, April 2019.

E. Vengadesan and R. Senthil, “A Review on Recent Developments in Thermal Performance Enhancement Methods of Flat Plate Solar Air Collector,” Renewable and Sustainable Energy Reviews, vol. 134, article no. 110315, December 2020.

S. J .B. Hall, Method of Testing to determine the Thermal Performance of Solar Collectors, Atlanta: Ashrae, 1986.

R. Petela, “Exergy of Undiluted Thermal Radiation,” Solar Energy, vol. 74, no. 6, pp. 469-488, June 2003.

D. MacPhee and I. Dincer, “Thermal Modeling of a Packed Bed Thermal Energy Storage System during Charging,” Applied Thermal Engineering, vol. 29, no. 4, pp. 695-705, March 2009.

S. J. Kine and F. McClintock, “Describing Uncertainties in Single-sample Experiments,” Mechanical Engineering, vol. 75, pp. 3-8, January 1953.

R. J. Moffat, “Describing the Uncertainties in Experimental Results,” Experimental Thermal and Fluid Science, vol. 1, no. 1, pp. 3-17, January 1988.

How to Cite
Ramalingam Senthil, Arvind Chezian, and Zackir Hussain Ajmal Arsath, “Heat Transfer Augmentation of Concentrated Solar Absorber Using Modified Surface Contour”, Int. j. eng. technol. innov., Dec. 2020.