Effect of Chamfered Turbulators on Performance of Solar Air Heater - Numerical Study
DOI:
https://doi.org/10.37934/cfdl.16.11.1736Keywords:
Solar air heater, Turbulence, Chamfer turbulator, Thermal enhancement factorAbstract
This paper presents a numerical analysis of the thermal performance improvement in a flat plate solar air heater equipped with chamfered turbulators attached below the absorber plate for evaluating performance for Reynolds numbers ranging from 3,000 to 21,000. According to the research, chamfered turbulators caused the flow to become highly turbulent. This flow behaviour with flow separation around the turbulators positively affects performance. This paper attempts to explain the complex flow behaviour found during the analysis. The turbulator diameter varies in 1 mm increments from 3 to 7 mm at a constant longitudinal pitch of 200 mm. The number of turbulator rows in the transverse direction is kept constant at three. The chamfer is represented by the flow attack angle, which can be 30°, 45°, or 60° facing the direction of flow and opposing the direction of flow. The results showed that a 7mm diameter turbulator with a 30° chamfer angle placed against the flow of air yielded a considerably more significant thermal enhancement factor of 1.15 over the spectrum of flow Reynolds number studied
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Mugisidi, Dan, Berkah Fajar, Syaiful Syaiful, and Tony Utomo. "Solar Still with an Integrated Conical Condenser." CFD Letters 15, no. 8 (2023): 122-134. https://doi.org/10.37934/cfdl.15.8.122134.
Boukhriss, Mokhless, Mahdi Timoumi, Adel Jammeli, Mohamed Ali Maatoug, Kamel Zarzoum, Sleh Farhani, and Habib Ben Bacha. "Modeling and Experimental Study of a Water Solar Collector Coupled to Optimized Solar Water Still." CFD Letters 15, no. 10 (2023): 23-33. https://doi.org/10.37934/cfdl.15.10.2333.
Del Rio, Jorge Andrés Sierra, Yustin Roman Ardila, Alejandro Ruiz Sánchez, Edwin Correa Quintana, D. Sanin-Villa, C. Arrieta González, and M. Luna-Del Risco. "Numerical Study of the Efficiency of a Solar Panel with Heat Sinks." CFD Letters 15, no. 4 (2023): 43-52. https://doi.org/10.37934/cfdl.15.4.4352.
Amrizal, Amrizal. "Effects of Fin Height, Fin Thickness and Reynolds Number on Heat Transfer Enhancement of Flat-Plate Thermal Collector: A Numerical Analysis." CFD Letters 15, no. 4 (2023): 53-63. https://doi.org/10.37934/cfdl.15.4.5363.
Azmi, Muhammad Amirul Azwan, Amir Abdul Razak, Muhammad Amir Syahiran Muhammad Tarminzi, Ahmad Fadzil Sharol, Ahmmad Shukrie Md Yudin, and Zafri Azran Abdul Majid. "Hydrodynamics Investigations of Kaffir Lime Leaves Drying in a Swirling Solar Drying Chamber with Inclined Slotted Angle Air Distributor." CFD Letters 15, no. 2 (2023): 71-86. https://doi.org/10.37934/cfdl.15.2.7186.
Abdullah, Yussra Malallah, Ghadeer Salim Aziz, and Hussein Kadhim Sharaf. "Simulate the Rheological Behaviour of the Solar Collector by Using Computational Fluid Dynamic Approach." CFD Letters 15, no. 9 (2023): 175-182. https://doi.org/10.37934/cfdl.15.9.175182.
Gill, R. S., V. S. Hans, and Sukhmeet Singh. "Investigations on thermo-hydraulic performance of broken arc rib in a rectangular duct of solar air heater." International Communications in Heat and Mass Transfer 88 (2017): 20-27. https://doi.org/10.1016/j.icheatmasstransfer.2017.07.024.
Dezan, Daniel J., Andre D. Rocha, and Wallace G. Ferreira. "Parametric sensitivity analysis and optimisation of a solar air heater with multiple rows of longitudinal vortex generators." Applied energy 263 (2020): 114556. https://doi.org/10.1016/j.apenergy.2020.114556.
Manjunath, M. S., K. Vasudeva Karanth, and N. Yagnesh Sharma. "Numerical analysis of the influence of spherical turbulence generators on heat transfer enhancement of flat plate solar air heater." Energy 121 (2017): 616-630. https://doi.org/10.1016/j.energy.2017.01.032.
Kumar, Rajesh, and Prabha Chand. "Performance enhancement of solar air heater using herringbone corrugated fins." Energy 127 (2017): 271-279. https://doi.org/10.1016/j.energy.2017.03.128.
Nidhul, Kottayat, Sachin Kumar, Ajay Kumar Yadav, and S. Anish. "Enhanced thermo-hydraulic performance in a V-ribbed triangular duct solar air heater: CFD and exergy analysis." Energy 200 (2020): 117448. https://doi.org/10.1016/j.energy.2020.117448.
Zhao, Zhiqi, Lei Luo, Dandan Qiu, Zhongqi Wang, and Bengt Sundén. "On the solar air heater thermal enhancement and flow topology using differently shaped ribs combined with delta-winglet vortex generators." Energy 224 (2021): 119944. https://doi.org/10.1016/j.energy.2021.119944.
Kumar, Amit, Ajeet Pratap Singh, and O. P. Singh. "Performance characteristics of a new curved double-pass counter flow solar air heater." Energy 239 (2022): 121886. https://doi.org/10.1016/j.energy.2021.121886.
Skullong, Sompol, Sutapat Kwankaomeng, Chinaruk Thianpong, and Pongjet Promvonge. "Thermal performance of turbulent flow in a solar air heater channel with rib-groove turbulators." International Communications in Heat and Mass Transfer 50 (2014): 34-43. https://doi.org/10.1016/j.icheatmasstransfer.2013.11.001.
Mahanand, Yadaba, and Jnana Ranjan Senapati. "Thermal enhancement study of a transverse inverted-T shaped ribbed solar air heater." International Communications in Heat and Mass Transfer 119 (2020): 104922. https://doi.org/10.1016/j.icheatmasstransfer.2020.104922.
Mahanand, Yadaba, and Jnana Ranjan Senapati. "Thermo-fluid analysis of a pentagonal ribbed triangular solar air heater duct (TSAHD): A three-dimensional numerical investigation." International Communications in Heat and Mass Transfer 137 (2022): 106258. https://doi.org/10.1016/j.icheatmasstransfer.2022.106258.
Hai, Doan Thi Hong, and Nguyen Minh Phu. "A critical review of all mathematical models developed for solar air heater analysis." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 105, no. 1 (2023): 1-14. https://doi.org/10.37934/arfmts.105.1.114
Yadav, Anil Singh, and Sanjay Kr Sharma. "Numerical simulation of ribbed solar air heater." In Advances in Fluid and Thermal Engineering: Select Proceedings of FLAME 2020, pp. 549-558. Springer Singapore, 2021. https://doi.org/10.1007/978-981-16-0159-0_49
Yadav, Anil Singh, Mayank Kumar Dwivedi, Abhishek Sharma, and Vimal Kumar Chouksey. "CFD based heat transfer correlation for ribbed solar air heater." Materials Today: Proceedings 62 (2022): 1402-1407. https://doi.org/10.1016/j.matpr.2021.12.382.
Chokphoemphun, Susama, Somporn Hongkong, Sanhawat Thongdaeng, and Suriya Chokphoemphun. "Experimental study and neural networks prediction on thermal performance assessment of grooved channel air heater." International Journal of Heat and Mass Transfer 163 (2020): 120397. https://doi.org/10.1016/j.ijheatmasstransfer.2020.120397.
Kumar, Raj, Muneesh Sethi, Ranchan Chauhan, and Anil Kumar. "Experimental study of enhancement of heat transfer and pressure drop in a solar air channel with discretized broken V-pattern baffle." Renewable Energy 101 (2017): 856-872. https://doi.org/10.1016/j.renene.2016.09.033.
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