THEORETICAL INVESTIGATION OF A SOLAR AIR HEATER ROUGHENED BY RIBS AND GROOVES

Year 2018, , 1702 - 1712, 14.12.2017

Cihan Yıldırım

https://doi.org/10.18186/journal-of-thermal-engineering.365713

Cited By: 11

Abstract

In this study, thermal and
thermohydraulic efficiencies of a solar air collector having a roughened
absorber with rib-grooved artificial roughness elements have been investigated
and compared with the flat plate solar air collectors. The system has been
theoretically investigated for different geometrical roughness parameters by
help of energy balance equations between the elements of collector. Geometrical
roughness parameters such as ratio of the relative roughness height (RRH),
relative roughness pitch (RRP), and groove positions to pitch (GP/PR) are
examined for Reynolds number range from 3000 to 21,000.

Keywords

Solar Energy; Artificial Roughness of Solar Air Heater; Rib and Groove Type Roughness

References

• [1]Oztop, H. F., Bayrak, F., & Hepbasli, A. (2013). Energetic and exergetic aspects of solar air heating (solar collector) systems. Renewable and Sustainable Energy Reviews, 21, 59-83.
• [2]Ong, K. S. (1995). Thermal performance of solar air heaters: mathematical model and solution procedure. Solar energy, 55(2), 93-109.
• [3]Ong, K. S. (1995). Thermal performance of solar air heaters—Experimental correlation. Solar Energy, 55(3), 209-220.
• [4]Yildirim, C., & Solmuş, İ. (2014). Çift Geçişli Hava Akişkanli Güneş Toplaci Kanal Yüksekliğinin Termohidrolik Verime Etkisinin İncelenmesi. Isi Bilimi Ve Teknigi Dergisi/Journal Of Thermal Science & Technology, 34(1).
• [5]Yadav, A. S., & Bhagoria, J. L. (2014). A numerical investigation of square sectioned transverse rib roughened solar air heater. International Journal of Thermal Sciences, 79, 111-131.
• [6]Acır, A., & Ata, İ. (2016). A study of heat transfer enhancement in a new solar air heater having circular type turbulators. Journal of the Energy Institute, 89(4), 606-616.
• [7]Rajaseenivasan, T., Srinivasan, S., & Srithar, K. (2015). Comprehensive study on solar air heater with circular and V-type turbulators attached on absorber plate. Energy, 88, 863-873.
• [8]Yang, M., Yang, X., Li, X., Wang, Z., & Wang, P. (2014). Design and optimization of a solar air heater with offset strip fin absorber plate. Applied Energy, 113, 1349-1362.
• [9]Saxena, A., Srivastava, G., & Tirth, V. (2015). Design and thermal performance evaluation of a novel solar air heater. Renewable Energy, 77, 501-511.
• [10]Alam, T., Saini, R. P., & Saini, J. S. (2014). Effect of circularity of perforation holes in V-shaped blockages on heat transfer and friction characteristics of rectangular solar air heater duct. Energy Conversion and Management, 86, 952-963.
• [11]Yadav, S., & Kaushal, M. (2014). Exergetic performance evaluation of solar air heater having arc shape oriented protrusions as roughness element. Solar Energy, 105, 181-189.
• [12]Alam, T., Saini, R. P., & Saini, J. S. (2014). Experimental investigation on heat transfer enhancement due to V-shaped perforated blocks in a rectangular duct of solar air heater. Energy Conversion and Management, 81, 374-383.
• [13]Nowzari, R., Mirzaei, N., & Aldabbagh, L. B. Y. (2015). Finding the best configuration for a solar air heater by design and analysis of experiment. Energy Conversion and Management, 100, 131-137.
• [14]Jin, D., Zhang, M., Wang, P., & Xu, S. (2015). Numerical investigation of heat transfer and fluid flow in a solar air heater duct with multi V-shaped ribs on the absorber plate. Energy, 89, 178-190.
• [15]Verma, P., & Varshney, L. (2015). Parametric investigation on thermo-hydraulic performance of wire screen matrix packed solar air heater. Sustainable Energy Technologies and Assessments, 10, 40-52.
• [16]Deo, N. S., Chander, S., & Saini, J. S. (2016). Performance analysis of solar air heater duct roughened with multigap V-down ribs combined with staggered ribs. Renewable Energy, 91, 484-500.
• [17] Singh, S., Chander, S., & Saini, J. S. (2015). Thermo-hydraulic performance due to relative roughness pitch in V-down rib with gap in solar air heater duct—Comparison with similar rib roughness geometries. Renewable and Sustainable Energy Reviews, 43, 1159-1166.
• [18]Yıldırım C., Solmuş İ. (2013). First and second law analysis of various types of solar air heaters, 8th Conference on Sustainable Development of Energy, Water and Environment Systems, Dubrovnik-Croatia, September 22-27.
• [19]Yıldırım C., Solmuş İ. (2015). Energy and Exergy Analysis of a Solar Air Collector Having a Roughened Absorber with Circular Protrusions, International Conference on Environment and Renewable Energy, Vienna, Austria, May 20-21.
• [20]Jaurker, A. R., Saini, J. S., & Gandhi, B. K. (2006). Heat transfer and friction characteristics of rectangular solar air heater duct using rib-grooved artificial roughness. Solar Energy, 80(8), 895-907.