Analysis of Hot-Air Supplemented Solar Drying Using Computational Fluid Dynamics Technique
DOI:
https://doi.org/10.35877/454RI.asci615Keywords:
airflow, drying, simulation, solar dryer, temperatureAbstract
Energy is a crucial input in the process of economic, social and industrial development of any nation. Fluctuating solar insolation and late sunrise hour has led to poor quality dried biological material production. A simulation of hot-air supplemented solar dryer (HSSD) designed for such purpose is presented for temperature distribution based on direct solar irradiation of 1423 W/m2 of Akure, Nigeria (5.304º Latitude 7.258º Longitude). The environmental conditions in the hybrid dryer were measured during a day of operation. The model of the dryer was created and a numerical model was established to allow replicating the internal environmental conditions of the dryer. The airflow, temperature, radiative heat flux and other parameters inside the HSSD system were simulated using computational fluid dynamics (CFD) approach. The simulated result was compared with the calculated and estimated parameter values for the HSSD. The simulated air-flow pattern and temperature distribution on the horizontal and vertical planes in the drying chamber were analyzed and the results revealed spatial homogeneity of drying air condition. However, there is higher velocity profile at the outlet vent due to buildup of hot air at outlet vent. There was relatively low interference of external temperature in the drying chamber.
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References
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[2] Epstein, P. R., Buonocore, J. J., Eckerle, K., Hendryx, M., Stout III, B. M., Heinberg, R., Clapp, R. W., May, B., Reinhart, N. L., Ahern, M. M., Doshi, S. K., and Glustrom, L. (2011). Full cost accounting for the life cycle of coal in “Ecological Economics Reviews.” Ann. N.Y. Academy. Science, 1219, 73–98.
[3] Adeyoyin, S. O., Alawiye, M. K. and Ewulo, O. R. (2019). Awareness and Use of Solar Energy as Alternative Power Source for ICT Facilities in Nigerian University Libraries and Information Centres. Library Philosophy and Practice (ejournal). 2372. 1-8.
[4] Akinboro, F. G., Adejumobi, I. A. and Makinde, V (2013). Solar energy installation in Nigeria: Observations, prospects, problems and solutions. Transitional Journal of Science and Technology. 2(4):15-27.
[5] Duffie A. J. and Beckman, W. (2006). Solar Engineering of Thermal Processes, 3rd Ed., John Wiley & Sons, Inc., New York. 435-441.
[6] Niebling, C. (2017), Adding Thermal Energy to State Renewable Energy Standards: Opportunity, Status, and Challenges, presentation at REV 2017, 2 October 2017, www.inrsllc.com/
[7] Owusu, P. A. and Asumadu-Sarkodie, S. (2016). A review of renewable energy sources, sustainability issues and climate change mitigation, Cogent Engineering, 3(1):1-9.
[8] IRENA (2018), Global Energy Transformation: A roadmap to 2050, International Renewable Energy Agency, Abu Dhabi. 8-40.
[9] Hertwich, E., Honnery, D., Infield, D., Kainuma, M., Khennas, S., Kim, S., Nimir, H. B., Riahi, K., Strachan, N., Wiser, R. and Zhang, X. (2014): Energy Systems. In: Climate Change (2014). Mitigation of Climate Change. Contribution of Working Group III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Edenhofer, O., R. Pichs-Madruga, Y. Sokona, E. Farahani, S. Kadner, K. Seyboth, A. Adler, I. Baum, S. Brunner, P. Eickemeier, B. Kriemann, J. Savolainen, S. Schlömer, C. von Stechow, T. Zwickel and J.C. Minx (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA.
[10] Alonge, O. I. and Obayopo, S. O. (2019). Computational fluid dynamics and experimental analysis of direct solar dryer for fish. Agricultural Engineering International: CIGR Journal, 21(2): 108–117.
[11] Garduño-García, A., López-Cruz, I. L. and Ruiz-García, A. (2017). Mathematical modeling of greenhouse solar dryers with natural and forced convection for agricultural products: state of the art. Ingeniería agrícola y biosistemas. 9(1):1-12.
[12] Furbo, E. (2010). Evaluation of RANS turbulence models for flow problems with significant impact of boundary layers. Teknisk- naturvetenskaplig fakultet UTH-enheten, Hus. 1-55.
[13] Wilcox, D. C. (1993). Turbulence Modeling for CFD. 1st Edt. DCW Industries Inc., California.
[14] Jitjack K., Thepa, S., Sudaprasert, K. and Namprakai, P. (2016). Improvement of a Rubber Drying Greenhouse with a parabolic cover and enhanced panels. Energy and Buildings 124: 178-193
[15] Tiwari, S., Tripathi, R. and Tiwari, G. N. (2016). Thermal Analysis of Photovoltaic Integrated Greenhouse Solar Dryer. World Academy of Science, Engineering and Technology, International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering, 10(1): 81-85.
[16] Menter, F. R., Kuntz, M. and Langtry, R. (2003). Ten Years of Industrial Experience with the SST Turbulence Model, Turbulence, Heat and Mass Transfer 4, edited by K. Hanjalic, Y. Nagano, and M. Tummers, Begell House, Inc.
[17] Glushko, G. S., Ivanov, I. E. and Kryukov, I. A. (2010). Computational method for turbulent supersonic flows. Math Models Computational Simulation 2:407–422.
[18] Beniaiche, A., Nadir, M., Cerdoun, M. and Carcasci, C. (2018). Effect of turbulence models' choice on the aero-thermal flow numerical validations within a ribbed trailing edge geometry. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy. 233(1):52-77.
[19] Bentaleb, Y., Lardeau, S. and Leschziner, M. A. (2012). Large-eddy simulation of turbulent boundary layer separation from a rounded step. Journal of Turbulence, 00(00), 1–26.
[20] Gatski, T. B. and Bonnet, J. (2013). Compressibility, Turbulence and High Speed Flow (Second Edition) Elsevier Ltd, Academic Press, Massachusetts, United States. 39-77.
[21] Ficarella, A., Perago, A., Starace, G. and Laforgia, D. (2003). Thermo-fluid Dynamic Investigation of a Dryer, using Numerical and Experimental Approach, Journal of Food Engineering, 59, 413-420.
[22] Tarigan, E. (2018). Mathematical Modeling and Simulation of a Solar Agricultural Dryer with Back-Up Biomass Burner and Thermal Storage. Case Studies in Thermal Engineering. 12:149-165.
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Published
2022-06-30
How to Cite
Aduewa, T., & Oyerinde, A. (2022). Analysis of Hot-Air Supplemented Solar Drying Using Computational Fluid Dynamics Technique. Journal of Applied Science, Engineering, Technology, and Education, 4(1), 16–26. https://doi.org/10.35877/454RI.asci615
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