THERMAL SCIENCE

International Scientific Journal

Aminreza Noghrehabadi

,

Ebrahim Hajidavaloo

,

Mojtaba Moravej

,

Ali Esmailinasab

AN EXPERIMENTAL STUDY OF THE THERMAL PERFORMANCE OF THE SQUARE AND RHOMBIC SOLAR COLLECTORS

ABSTRACT
Solar collectors are the key part of solar water heating systems. The most widely produced solar collectors are flat plate solar collectors. In the present study, two types of flat plate collectors, namely square and rhombic collectors are experi¬mentally tested and compared and the thermal performance of both collectors is investigated. The results show both collectors have the same performance around noon (≈61%), but the rhombic collector has better performance in the morning and afternoon. The values for rhombic and square collectors are approximately 56.2% and 53.5% in the morning and 56.1% and 54% in the afternoon, respectively. The effect of flow rate is also studied. The thermal efficiency of rhombic and square flat plate collectors increases in proportion to the flow rate. The results indicated the rhombic collector had better performance in comparison with the square collector with respect to the mass-flow rate.
KEYWORDS
flat plate solar collector, efficiency, rhombic collector, square collector, flow rate effect
PAPER SUBMITTED: 2015-12-28
PAPER REVISED: 2016-02-22
PAPER ACCEPTED: 2016-02-25
PUBLISHED ONLINE: 2016-11-06
DOI REFERENCE: https://doi.org/10.2298/TSCI151228252N
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2018, VOLUME 22, ISSUE Issue 1, PAGES [487 - 494]
REFERENCES
  1. Chen, Z., et al., Efficiencies of Flat Plate Solar Collectors at Different Flow Rates, Energy Procedia, 30 (2012), pp. 65-72
  2. Duffie, J. A., Beckman. W. A., Solar Engineering of Thermal Processes, John Wiley and Sons Inc., New York, USA, 2013
  3. Yousefi, T., et al., An Experimental Investigation on the Effect of Al2O3-H2O Nanofluid on the Efficiency of Flat Plate Solar Collector, Renewable Energy, 39 (2012), 1, pp. 293-298
  4. Kalogirou, S., Solar Thermal Collectors and Applications, Progress in Energy and Combustion Science, 30 (2004), 3, pp. 231-295
  5. Zambolina, E., Del, D., Experimental Analysis of Thermal Performance a Flat Plate and Evacuated Tube Solar Collectors in Stationary Standard and Daily Condition, Solar Energy, 84 (2010), 8, pp. 1382-1396
  6. Riahi, A., Taherian, H., Experimental Investigation on the Performance of Thermosyphon Solar Water Hater In the South Caspian Sea, Thermal Science, 15 (2011), 2, pp. 447-456
  7. Mintsa Do Ango, A. C., et al., Optimization of the Design of a Polymer Flat Plate Solar Collector, Solar Energy, 87 (2013), pp. 64-75
  8. Bogaerts, W. F., Lampert, C. M., Materials for Photothermal Solar-Energy Conversion, Journal of Materials Science, 18 (1983), 10, pp. 2847-2875
  9. Tian, Y., Zhao, C. Y., A Review of Solar Collectors and Thermal Energy Storage in Solar Thermal Applications, Applied Energy, 104 (2013), pp. 538-553
  10. Kumar, N., et al., A Truncated Pyramid Non Tracking Type Multipurpose Solar Cooker/Hot Water System, Applied Energy, 87 (2010), 2, pp. 471-477
  11. Bertocchi, R., et al., Experimental Evaluation of a Non-Isothermal High Temperature Solar Particle Receiver, Energy, 29 (2004), 5, pp. 687-700
  12. Bohn, M. S., Wang, K. Y., Experiments and Analysis on the Molten Salt Direct Absorption Receiver Concept, ASME Journal of Solar Energy Engineering, 110 (1988), 1, pp. 45-51
  13. Fend, T., et al., Two Novel High-Porosity Materials as Volumetric Receivers for Concentrated Solar Radiation, Solar Energy Materials and Solar Cells, 84 (2004), 1, pp. 291-304
  14. Mousazaeh, H., et al., A Review of Principal and Sun-Tracking Methods for Maximizing Solar Systems Output, Renewable and Sustainable Energy Review, 13 (2009), 8, pp. 1800-1818
  15. Samanta, B., AI Balushi, K. R., Estimation of Incident Radiation on a Novel Spherical Solar Collector, Renewable Energy, 14 (1998), 1, pp. 241-247
  16. Chekerovska, M., Filkoski, R. V., Efficiency of Liquid Flat-Plate Solar Energy Collector With Solar Tracking System, Thermal science, 19 (2015), 5, pp. 1673-1684
  17. Chima Oko. C. O., Ndubuisi Nnamchi. S., Heat Transfer in a Low Lattitude Flat-Plate Solar Collector, Thermal science, 16 (2012), 2, pp. 583-591
  18. Gupta, H. K., et al., Investigation for Effect of Al2O3-H2O Nanofluid Flow Rate on the Efficiency of Direct Absorption Solar Collector, Solar Energy, 118 (2015), pp. 390-396
  19. Yousefi, T., et al., An Experimental Investigation on the Effect of pH Variation of MWCNT-H2O Nanofluid on the Efficiency of Flat Plate Solar Collector, Solar Energy, 86 (2012), 2, pp.771-779
  20. Khatib, T., et al., Modeling of Daily Solar Energy on a Horizontal Surface for Five Main Sites in Malaysia, International Journal of Green Energy, 8 (2011), 8, pp. 795-819
  21. Hossain, M., et al., Review on Solar Water Heater Collector and Thermal Energy Performance of Circuiting Pipe, Renewable and Sustainable Energy Reviews, 15 (2011), 8, pp. 3801-3812
  22. Cristofari, C., et al., Modeling and Performance of a Copolymer Solar Water Heating Collector, Solar Energy, 72 (2002), 2, pp. 99-112
  23. Kalogirou, S., Prediction of Flat Plate Collector Performance Parameters Using Artificial Neural Networks, Solar Energy, 80 (2006), 3, pp. 248-259
PDF VERSION [DOWNLOAD]
An experimental study of the thermal performance of the square and rhombic solar collectors

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence