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个人简介
Engr. Aduewa Taiwo Oluwafemi PhD’s Statement of Personal Research Focus
Not many university admission seekers wish to spend their undergraduate years as an agricultural engineering student as it was not one of the popular Engineering course they were used to during their secondary school days, but I will readily admit to being just such a student. My First degree project supervisor helped me to develop special interest for Food Processing and Storage option of the discipline. I started the research sojourn with agricultural material drying and design of drying equipment for yam and plantain. After the completion of this final year project, there was more interest in the process of drying and storage of agricultural and biological materials most especially the design of machines and equipment for the drying process, automation of this machines, simulation and also optimization.
I nurtured this special interest in the research line in order to solve some problems related with automation of drying system especially the one involved with renewable/clean energy, with the aim of solving the bottleneck challenges attached to energy problems in Africa due to insufficient, unstable and in some cases unavailable power supply which has led to farmers losing a lot of their produce mostly the highly perishable ones. The project topic for my undergraduate research is development and testing of sorption isotherm dryer. It was after this project completion that the drive to develop a drying system that allows direct moisture content determination measurement without opening the dryer. But I have wanted my research to be renewable energy driven and that was the rationale behind the use of solar drying system as the primary drying system. At the conceptualization stage of my master’s project (development and evaluation of hot-air supplemented solar dryer for white yam (dioscorea rotundata) slices), I incorporated a mechanical drying system into an indirect solar drying system with the solar dryer as the primary heat source and the mechanical system powered by a generator as secondary. The major problem to be solved here was stabilizing the working drying temperature inside the drying chamber of the dryer. But at the end of the experimentation, analysis showed that the cost of energy from the mechanical system was still on the high side and more so the major aim of achieving a 100% renewable energy based drying was still not real. But the drive to stabilize the temperature level inside a hybrid solar-based drying system was achieved and the dried products gave a better result than using conventional solar drying.
This discovery pushed further to a more complex research at PhD level where a completely automated and controlled solar drying system with supplemented heating system was developed. The research topic for the PhD project was development and optimization of an automated solar powered hot-air supplemented dryer for white yam slices. This research delved deeply into the use of electronic devices in designing a control system for solar-based hybrid dryer. The electronics concept was designed to ensure the moisture level in the drying system can be determined at every drying stage, the drying temperature in the dryer can be determined also digitally. Regulation of air speed, temperature and moisture content level was also achieved digitally. The designed dryer was simulated using a simulating software package to determine the effectiveness and efficiency of the designed system. The whole drying system designed was optimized likewise the drying process using optimization tools and also Fourier approach for effective moisture diffusivity determination. Thin layer drying models were also used to predict and analyze the drying kinetics of the dried material. My research also span to the determination of effect of different drying systems and pretreatment methods on the proximate composition of the products derived after drying.
I have researched into design of floating fish feed extruder likewise the evaluation of the designed extruder. Determination of thermal velocity of various agricultural products using a developed aerodynamics system was also one of the researches I have conducted which was vital to the design of processing and storage equipment for biological materials. I also researched into the development and simulation of maize dehusking and shelling machine with a blowing unit. Based on my interest for thermally controlled system, I researched into the design and construction of thermal control solar heated poultry house and also the analysis of thermally controlled poultry housing using computational fluid dynamics.
Ongoing research interest include further research into simulations and optimization of more hybrid drying systems, design and development of more hybrid drying system that are renewable energy based. Storage of agricultural produce using locally sourced materials with reference to renewable energy
研究兴趣
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Journal of Applied Science, Engineering, Technology, and Educationno. 1 (2022): 16-26
Journal of Engineering Research and Reportspp.40-48, (2020)
Asian Journal of Advances in Agricultural Researchpp.1-14, (2019)
Asian Journal of Advances in Agricultural Researchpp.1-16, (2019)
IOSR Journal of Agriculture and Veterinary Scienceno. 12 (2014): 114-123
mag(2014)
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