Salt Separation by Automation Control System
Keywords:
Thermoelectric, Ultrasonic fogger, Heat exchange, Salt farming systemAbstract
At present, the process of transforming seawater into salt employs a range of diverse methods and techniques. Researchers have introduced an approach aimed at cost reduction in the separation of water and salt from seawater, leveraging contemporary technologies. The primary goal of this investigation is to examine the design and implementation of an automated control system for separating salt from seawater, grounded in the principles of thermoelectricity coupled with ultrasonic technology. Data collection by the researchers unfolded in four main phases. Initially, the complete structure and equipment are assembled. Next, software programs are written to gather data from various sensors. The subsequent step involved data analysis in order to compare experimental results. Finally, the researchers computed the efficiency percentage of salt production and summarized their findings. Key components of this process include the ultrasonic vibration generator, which generates micron-sized water droplets through high-frequency vibrations on the water surface, resulting in smaller mist particles measuring less than 5 microns. Simultaneously, the thermoelectric component is responsible for producing salt by heating the mist containing salt impurities, while the cold side condenses the steam from the hot side back into water. In experiments conducted with water layer thicknesses of 3 cm, 4 cm, and 5 cm, it was observed that the volume of lost water and the temperature of the hot side were similar. However, the particle size of the mist varied, impacting the efficiency of salt production. Consequently, the 5 cm water layer exhibited the highest temperature on the hot side, leading to the greatest effectiveness in salt water evaporation.
References
Aberuee, M. J., Baniasadi, E., & Ziaei-Rad, M. (2017). Performance analysis of an integrated solar based thermo-electric and desalination system. Applied Thermal Engineering, 110, 399-411. doi: 10.1016/j.applthermaleng.2016.08.199.
Adafruit. (2017). MAX31865 PT100 and ARDUINO MEGA2560. Retrieved from https://forums.adafruit.com/viewtopic.php?t=127049.
Arduino. (2019). SPI library. Retrieved from https://www.arduino.cc/en/reference/SPI
Ahmadi, P., Khanmohammadi, S., Musharavati, F., & Afrand, M. (2020). Development, evaluation, and multi-objective optimization of a multi-effect desalination unit integrated with a gas turbine plant. Applied Thermal Engineering, 176, 115414. https://doi.org/10.1016/j.applthermaleng.2020.115414
Athasit, W., & Ukrit, T., (2023). Salt-water Phase-separation Method for Indoor Salt Farming Using Thermoelectric and Ultrasonic Atomization Technology. Thai Petty Patent No. 21754. Bangkok: Department of Intellectual Property
Cerci, Y. (2002). Exergy analysis of a reverse osmosis desalination plant in California. Desalination, 142(3), 257-266. https://doi.org/10.1016/S0011-9164(02)00207-2
Chen, D., Weavers, L. K., & Walker H.W. (2006). Ultrasonic control of ceramic membrane fouling: Effect of particle characteristics. Water Research, 40(4), 840–850. https://doi.org/10.1016/j.watres.2005.12.031
Demir, M. E., & Dincer, I. (2017). Development of an integrated hybrid solar thermal power system with thermoelectric generator for desalination and power production. Desalination, 404, 59-71. https://doi.org/10.1016/j.desal.2016.10.016
Doosti, M., Kargar, R., & Sayadi, M. (2012). Water treatment using ultrasonic assistance: A review. Proceedings of the International Academy of Ecology and Environmental Sciences, 2(2), 96. https://www.researchgate.net/publication/268393705_Water_treatment_using_ultrasonic_assistance_A_review
El-Dessouky, H. T., & Ettouney, H. M. (2002). Fundamentals of salt water desalination. Amsterdam, Netherlands: Elsevier.
Hosseingholiloua, B., Banakara, A., & Mostafaeib, M. (2019). Design and evaluation of a novel ultrasonic desalination system by response surface methodology. Desalination and Water Treatment, 164, 263–275. doi: 10.5004/dwt.2019.24458.
Khanmohammadi, S., Saadat-Targhi, M., Ahmed, F.W., & Afrand, M. (2020). Potential of thermoelectric waste heat recovery in a combined geothermal, fuel cell and organic Rankine flash cycle (thermodynamic and economic evaluation). International Journal of Hydrogen Energy, 45(11), 6934-6948. doi:10.1016/j.ijhydene.2019.12.113
Miller, E. W., Hendricks, T. J., & Peterson, R. B. (2009). Modeling energy recovery using thermoelectric conversion integrated with an organic rankine bottoming cycle. Journal of Electronic Materials, 38(7), 1206-1213. https://doi.org/10.1007/s11664-009-0743-1
Moossa, B., Trivedi, P., Saleem, H., & Javaid Zaidi, S. J. (2022). Desalination in the GCC countries-a review. Journal of Cleaner Product, 357, 131717. doi:10.1016/j.jclepro.2022.131717
Saadat-Targhi, M., & Khanmohammadi, S. (2019). Energy and exergy analysis and multi-criteria optimization of an integrated city gate station with organic Rankine flash cycle and thermoelectric generator. Applied Thermal Engineering, 149, 312-324. doi:10.1016/j.applthermaleng.2018.12.079
Seyed, M. P., Mohammad, H. A., Milad, S., Soroush, M., Fathollah, P., Lingen, C., Mohammad, A. Y., & Ravinder, K. (2019). Thermoelectric cooler and thermoelectric generator devices: A review of present and potential applications, modeling and materials. Energy, 186, 115849. doi: 10.1016/j.energy.2019.07.179
Shatat, M., Worall, M., & Riffat, S. (2013). Economic study for an affordable small scale solar water desalination system in remote and semiarid region. Renewable and Sustainable Energy Reviews, 25, 543–551. doi:10.1016/j.rser.2013.05.026
Tabletop Robotics. (2019). How to save Arduino Serial data to TXT file. Retrieved from https://www.youtube.com/watch?v=lz_AETY9o5E
Windsolargadget. (2016). Thermoelectric Cooler Peltier. Retrieved from https://www.windsolargadget.com/article/2/thermoelectric-cooler-peltie
