Vol. 25, No. 1 (2026), Sim26720 https://doi.org/10.24275/rmiq/Sim26720


Numerical-experimental study of a solar dryer using Computational Fluid Dynamics (CFD) for its optimization


 

Authors

A. Tlatelpa-Becerro, L. Castro, M. Rebolledo Abri, I.S. Avilés-López, M. Navarrete-Procopio, V.M. Zezatti-Flores, E.O. Castañeda Magadán


Abstract

This research work involved a numerical-experimental study of a forced-flow, indirect solar dryer using computational fluid dynamics (CFD) for optimization. The dryer has two main parts: a drying chamber that captures radiant energy from the sun, through which airflow is passed to increase its temperature before being transported to the drying chamber, where the products are dried. The dryer was instrumented with temperature sensors to record the data, which were used in the computational modeling. The computational simulations predicted that reducing the height of the drying chamber to 50 cm would increase the average temperature to 13.43 K compared to the original design. Therefore, CFD is a powerful tool for studying solar dryers, offering both technical and economic advantages.


Keywords

Solar dryer, Computational Fluid Dynamics, Optimization.


References

  • Afshari, F., Tuncer, A. D., Sözen, A., Ciftci, E., & khanlari, A. (2021). Experimental and numerical analysis of a compact indirect solar dehumidification system. Solar Energy, 226, 72-84. doi:10.1016/j.solener.2021.08.025
  • Benhamza, A., Boubekri, A., Atia, A., Habidi, T., & Arici, M. (2021). Drying uniformity analysis of an indirect solar dryer based on computational fluid dynamics and image processing. Sustainable energy technologies and assessments, 47. doi:10.1016/j.seta.2021.101466
  • Bird, R. B., Stewart, W. E., & Lightfoot, E. N. (2006). Fenómenos de transporte. México: Limusa Wiley.
  • Castañeda Magadán, E. O. (2017). Control e instrumentación de un intercambiador de calor experimental.
  • Cengel, Y. A., & Ghajar, A. J. (2011). Transferencia de calor y masa. Fundamentos y aplicaciones. McGraw Hill.
  • Cetina-Quiñoñnes, A., López-López, J., Ricalde-Cab, L., El Mekaoui, A., San-Pedro, L., & Bassam, A. (2021, 08). Experimental evaluation of an indirect type solar dryer for agricultural use in rural communities: Relative humidity comparative study under winter season in tropical climate with sensible heat storage material. Solar Energy, 224, 58-75. doi:10.1016/J.SOLENER.2021.05.040
  • Das, M., Alic, E., & Akpinar, E. (2021). Numerical and experimental analysis of heat and mass transfer in the drying process of the solar drying system. Engineering science and technology, an International Journal, 24(1), 236-246. doi:10.1016/j.jestch.2020.10.003
  • Demissie, P., Hayelom, M., Kassaye, A., Hailesilassie, A., Gebrehiwot, M., & Venierschot, M. (2019). Design, development and CFD modeling of indirect solar food dryer. Energy procedia, 158, 1128-1134. doi:10.1016/j.egypro.2019.01.278
  • Doymaz, Í., & Ísmail, O. (2011, 01). Drying characteristics of sweet cherry. Food and Bioproducts Processing, 89(1), 31-38. doi:10.1016/J.FBP.2010.03.006
  • Dufera, L., Hofacker, W., Esper, A., & Hensel, O. (2021). Physicochemical quality of twin layer solar tunnel dried tomato slices. Heliyon, 7(5). doi:10.1016/j.heliyon.2021.e07127
  • Elakrout, O., Ghriss, O., Bouabidi, A., & Vanierschot, M. (2025). Experimental and Numerical Investigation of a Novel Low-Cost Solar Air Heater with Large-Scale V-Shaped Fins to Enhance Heat Transfer. Energies18(20), 5503. https://doi.org/10.3390/en18205503
  • Figueroa-García, E., Segura-Castruita, M., Luna-Olea, F., Vázquez-Vuelvas, O., & Chávez-Rodríguez, A. (2021). Design of a hybrid solar collector with a flat plate solar collector and induction heating:. Revista Mexicana de Ingeniería Química, 20(3). doi:10.24275/rmiq/Alim2452
  • Galindo Luna, J. A., García Castrejón, J. C., Castro Gómez, L. L., & Urquiza Beltrán, G. (2017). Mechanical power variation in hydraulic microturbine regarding the number of blades. DYNA: Ingeniería e Industria, 92, 503-506.
  • García-Moreira, D. P., Pacheco, N., Hernández-Guzmán, H., Bahammou, Y., Tagnamas, Z., Moreno, I., & López-Vidaña, E. C. (2024). Evaluation of various drying methods for mexican yahualica chili: Drying characteristics and quality assessment. Advanced Drying Technologies in Food Processing, 12(9), 1969. doi:10.3390/pr12091969
  • García-Moreira, D., De Zacatecas, U. A., Moreno, I., Delgadillo-Ruiz, L., & López-Vidaña, E. (2025). Impact of modulation of solar irradiance on spinach drying and its effects on bioactive compounds and quality. Revista Mexicana de Ingeniería Química24(3), 1-17. https://doi.org/10.24275/rmiq/alim25628
  • Getahun, E., Delele, M. A., Gabbiye, N., Fanta, S. W., Demissie, P., & Vanierschot, M. (2021). Importance of integrated CFD and product quality modeling of solar dryers for fruits and vegetables: A review. Solar energy, 220, 88-110. doi:10.1016/j.solener.2021.03.049
  • Gobierno de México. (2016, 09 06). México Megadiverso. Retrieved from Gobierno de México: https://www.gob.mx/conanp/es/articulos/mexico-megadiverso-173682?idiom=es.
  • Güler, H. Ö., Sözen, A., Tuncer, A. D., Afshari, F., Khanlari, A., Sirin, C., & Gungor, A. (2020). Experimental and CFD survey of indirect solar dryer modified with low-cost iron mesh. Solar energy, 197, 371-384. doi:10.1016/j.solener.2020.01.021
  • Iranmanesh, M., Hadi, S. A., & Saleh, B. J. (2020). CFD modeling and evaluation the performance of a solar cabinet dryer equipped with evacuated tube solar collector and thermal storage. Renewable energy, 145, 1192-1213.
  • Kebede, A. Y., Tigabu, M. T., Admase, A. T., & Bezie, A. J. (2024b). Performance evaluation of diminutive solar dryer for drying of green coffee beans: In Ethiopian highlands. Case Studies In Thermal Engineering65, 105653. https://doi.org/10.1016/j.csite.2024.105653
  • Limón Portillo, A. (2017, 06 02). Energía solar en México: su potencial y aprovechamiento. Retrieved from Centro de Investigación Económica y Presupuestaria: https://ciep.mx/energia-solar-en-mexico-su-potencial-y-aprovechamiento/
  • Rahmat, M. A. A., Ibrahim, A., Ishak, M. A. A., Mustaffa, M. U. S., & Al-Aribe, K. M. (2025b). Numerical investigation of thermal and airflow profiles in diverse solar dryer chamber configurations. Case Studies In Thermal Engineering73, 106612. https://doi.org/10.1016/j.csite.2025.106612
  • Romero, V., Cerezo, E., García, M., & Sánchez, M. (2014). Simulation and validation of vanilla drying process in an indirect solar dryer prototype using cfd fluent program. Energy procedia, 57, 1651-1658. doi:10.1016/j.egypro.2014.10.156
  • Tegenaw, P. D., Gebrehiwot, M. G., & Vanierschot, M. (2019). On the comparison between computational fluid dynamics (CFD) and lumped capacitance modeling for the simulation of transient heat transfer in solar dryers. Solar Energy184, 417-425. https://doi.org/10.1016/j.solener.2019.04.024
  • Tlatelpa-Becerro, A., Rico-Martínez, R., Urquiza-Beltrán, G., & Calderón-Ramírez, M. (2019). Obtaining of Crataegus mexicana leaflets using an indirect solar dryer. Revista Mexicana de Ingeniería Química19(2), 669-676. https://doi.org/10.24275/rmiq/alim896
  • Xamán, J., & Gijón-Rievera, M. (2016). dinámica de fluidos computacionales para ingenieros. Palilibro.
  • Zukauskas, A. (1972). Heat transfer from tubes in crossflow. Advances in heat transfer, 8, 93-160. doi:10.1016/S0065-2717(08)70038-8