Effect of Air Inlet Speed Variations on Oil Palm Loose Fruit Collector
DOI:
https://doi.org/10.33736/jaspe.6822.2024Keywords:
computational fluid dynamics; cyclone separator; discrete phase model; oil palm loose fruits; reynold’s stress modelAbstract
Oil palm is one of the largest economic sectors in Malaysia. Among the problems faced in the estates is oil palm loose fruit deposition, which is currently being collected manually in the industry. Hence, an oil palm loose fruit collector was designed using a cyclone separator mechanism and was studied using computational fluid dynamics (CFD). In the current study, Reynold’s stress model (RSM) and the discrete phase model (DPM) were employed to navigate numerical simulations where air speed intake of the designed machine was varied at 13, 30, and 46 m/s, respectively. The wall was set to a no-slip condition with standard wall functions. The hydraulic diameter of the gas outlet was Bc = 0.1 m. The hydraulic diameters of the particle’s outlet were Jc = 0.15 m and 0.2 m, respectively. Turbulence intensity at the gas and particle outlet was specified at 5%. An injection with density of 995.7 kg/m3 and a diameter of 0.04 m was set to simulate oil palm loose fruit collection into the system. Effects of air speed variations on the pressure drop and collection efficiency were then analyzed. It was found that increasing the inlet air speed from 13 m/s to 30 m/s reduced the collection efficiency by 14.92 % from 80.05% to 66.13%, while a 54.444% collection was recorded at 46 m/s inlet air speed. Ultimately, results indicate that a lower air speed is favorable in terms of pressure drop and collection efficiency.
References
Malaysia Palm Oil Board (2023). Oil palm statistics. Area (2023). Retrieved from https://bepi.mpob.gov.my/index.php/area/307-area-2023/1189-oil-palm-planted-area-2023
Yusoff, M. Z. M. (2019). Loose fruit collector machine in Malaysia: A review. International Journal of Engineering Technology and Sciences, 6(2), 65-75. https://doi.org/10.15282/ijets.v6i2.2909
Ruswanto, A., Ramelan, A. H., Praseptiangga, D. and Partha, I. B. B. (2020). Palm oil yield potency on different level of ripening and storage time based on fruits percentage and fresh fruit bunches. IOP Conf. Series: Earth and Environmental Science 443(1), 012005. DOI 10.1088/1755-1315/443/1/012005
Darius, E. P. & Fairulnizam, M. H. (2015) Effects of collecting systems and plantation environment on debris accumulation in a collected oil palm loose fruits. Proc. Int. Conf. Plt. Phy. 2014, 147-151. ISBN 978-967-10840-4-5
Sime Darby (2008). Loose Fruit vs. Lost Income. Seedlink: A bimonthly publication by Sime Darby Sdn. Bhd., March 2008, Vol. 2/6. Subang Jaya. pp.8.
Shuib, A. R., Khalid, M. R. & Bakri, M. A. M. (2018). Development of oil palm loose fruit collecting machine with elevated discharge mechanism. International Journal of Engineering Research & Technology. 7(10), 225-234.
Chang, L. C., Sani, A. R. A., & Basran, Z. (2003). An economic perspective of oil extraction rate in the oil palm industry of Malaysia. Oil Palm Industry Economic Journal, 3(1), 25-31.
Yusoff, M. Z. M., Zamri, A., Abd Kadir, M. Z. A., Hassan, W. W., & Azis, N. (2020). Development of integrated loose fruit collector machine for oil palm plantations. Bulletin of Electrical Engineering and Informatics, 9(2), 500-506. https://doi.org/10.11591/eei.v9i2.2087
Sukadarin, E. H., Deros, B. M., Nawi, N. S. M., Ghani, J. A., Ismail, A. R., & Zakaria, J. (2016). Back pain and the observed factors among oil palm workers. International Journal Of Engineering Technology and Sciences, 3(1), 70-78. https://doi.org/10.15282/ijets.5.2016.1.9.1048
Ahmad, H., Ahmad Zamri, M.Y, & Mohd S. J. (1995). Loose Fruit Collector. PORIM Information Series No.19, Palm Oil Research Institute of Malaysia (PORIM), Selangor.
Khalid, M. R. & Shuib, A. R. (2017). Performance of oil palm loose fruits separating machine. Journal of Oil Palm Research, 29 (3), 358-365. . https://doi.org/10.21894/jopr.2017.2903.08
Shuib, A. R. & Khalid, M.R. (2005). Air-Assisted Loose Fruit Separating Machine, MPOB Information Series No.261, Malaysia Palm Oil Board (MPOB), Selangor.
Guo, M., Yang, L., Son, H., Le, D. K., Manickam, S., Sun, X., & Yoon, J. Y. (2024). An overview of novel geometrical modifications and optimizations of gas-particle cyclone separators. Separation and Purification Technology, 329, 125136. https://doi.org/10.1016/j.seppur.2023.125136.
Park, D. & Go, J. (2020). Design of Cyclone Separator Critical Diameter Model Based on Machine Learning and CFD. Processes. 8. 10.3390/pr8111521.
Babaoğlu, N. U., Parvaz, F., Hosseini, S. H., Elsayed, K., & Ahmadi, G. (2021). Influence of the inlet cross-sectional shape on the performance of a multi-inlet gas cyclone. Powder Technology, 384, 82-99. https://doi.org/10.1016/j.powtec.2021.02.008
Gao, Z., Wang, J., Liu, Z., Wei, Y., Wang, J., & Mao, Y. (2020). Effects of different inlet structures on the flow field of cyclone separators. Powder technology, 372, 519-531. https://doi.org/10.1016/j.powtec.2020.06.014
Nassaj, O. R., Toghraie, D., & Afrand, M. (2019). Effects of multi inlet guide channels on the performance of a cyclone separator. Powder Technology, 356, 353-372. https://doi.org/10.1016/j.powtec.2019.08.038
Siadaty, M., Kheradmand, S., & Ghadiri, F. (2017). Study of inlet temperature effect on single and double inlets cyclone performance. Advanced Powder Technology, 28(6), 1459-1473. https://doi.org/10.1016/j.apt.2017.03.015
Misiulia, D., Andersson, A. G., & Lundström, T. S. (2015). Effects of the inlet angle on the flow pattern and pressure drop of a cyclone with helical-roof inlet. Chemical engineering research and design, 102, 307-321. https://doi.org/10.1016/j.cherd.2015.06.036
Misiulia, D., Andersson, A. G., & Lundström, T. S. (2017). Effects of the inlet angle on the collection efficiency of a cyclone with helical-roof inlet. Powder Technology, 305, 48-55. https://doi.org/10.1016/j.powtec.2016.09.050
Li, H. X., Gao, B. G., & Li, B. (2015). Numerical analysis of flow dynamics of cyclone separator used for circulating fluidized bed boiler. Chemical Engineering Transactions, 46, 991-996. https://doi.org/10.3303/CET1546166
Wasilewski, M., Brar, L. S., & Ligus, G. (2020). Experimental and numerical investigation on the performance of square cyclones with different vortex finder configurations. Separation and Purification Technology, 239, 116588. https://doi.org/10.1016/j.seppur.2020.116588
Liu, D., Hsiao, T. C., & Chen, D. R. (2015). Performance study of a miniature quadru-inlet cyclone. Journal of Aerosol Science, 90, 161-168. https://doi.org/10.1016/j.jaerosci.2015.08.010
Elsayed, K. & Lacor, C. (2010). The effect of vortex finder diameter on cyclone separator performance and flow field. V European Conference on Computational Fluid Dynamics. 14-17 June 2010.
Ahmad Zamri, M.Y & Ahmad, H. (1999). Mechanical Loose Fruit collector. PORIM Information Series No.57, Palm Oil Research Institute of Malaysia (PORIM), Selangor.
Yusof, MD. Z. A & Yusoff, M. M. Z. (2017). A Motorized Device For Picking And Collecting Loose Fruits. International Publication Number: WO2016072829A1. https://patents.google.com/patent/WO2016072829A1.
Ramdhan, M. K., Rahim, A. S. & Norman, K. (2019). Determination of minimum suction level of collecting oil palm loose fruits. Konvensyen Kebangsaan Kejuruteraan Pertanian dan Makan 2019, Putrajaya. pp. 198-201. eISBN 978-967-16145-1-8
Hoekstra, A. J., Derksen, J. J., & Van Den Akker, H. E. A. (1999). An experimental and numerical study of turbulent swirling flow in gas cyclones. Chemical engineering science, 54(13-14), 2055-2065. https://doi.org/10.1016/S0009-2509(98)00373-X
ANSYS FLUENT Theory Guide, ANSYS, Inc., Release 15.0, November 2013.
Morsi, S. A. J., & Alexander, A. J. (1972). An investigation of particle trajectories in two-phase flow systems. Journal of Fluid mechanics, 55(2), 193-208. https://doi.org/10.1017/S0022112072001806
El-Emam, M. A., Zhou, L., Shi, W. & Han, C. (2021). Performance evaluation of standard cyclone separators by using CFD–DEM simulation with realistic bio-particulate matter. Powder Technology, 385, 357-374. https://doi.org/10.1016/j.powtec.2021.03.006
Wang, L. (2004). Theoretical study of cyclone design, Doctoral Thesis, Texas A&M University.
Owolarafe, O. K., Olabige, M. T., & Faborode, M. O. (2007). Physical and mechanical properties of two varieties of fresh oil palm fruit. Journal of Food Engineering, 78(4), 1228-1232. https://doi.org/10.1016/j.jfoodeng.2005.12.049
Sakin, A., Karagoz, I., & Avci, A. (2019). Performance analysis of axial and reverse flow cyclone separators. Chemical Engineering and Processing-Process Intensification, 144, 107630. https://doi.org/10.1016/j.cep.2019.107630.
Samadi, M., Mesbah, M., & Majidi, S. (2024). A novel approach to designing compact cyclones for efficient natural gas filtration. Powder Technology, 448, 120259. https://doi.org/10.1016/j.powtec.2024.120259
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