Valentin Soloiu

Allen E. Paulson Distinguished Chair of Renewable Energy and Professor, Department of Mechanical Engineering Georgia Southern University

  • Statesboro GA

Valentin Soloiu is an expert in Renewable and Sustainable, Biofuels Advanced Combustion Technologies, and Heat Transfer and Emissions.

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Georgia Southern secures National Science Foundation Grant for innovative STEM research, education and outreach

Georgia Southern University’s Allen E. Paulson College of Engineering and Computing and College of Education are teaming up to bring the latest innovative research on renewable energy to STEM educators and their classrooms across Georgia. That’s all thanks to a $600,000 grant from the National Science Foundation to establish the Engaging Educators in Renewable Energy (ENERGY) program. The funds will support a three-year-long initiative that will bring Valentin Soloiu, Ph.D.’s energy research into high school and technical college classrooms. Soloiu and engineering graduate students from Georgia Southern will conduct research related to renewable energy, reducing greenhouse gas emissions, and mitigating climate change, covering topics like renewable and alternative energy (solar and wind), climate change, enhanced energy technologies and the development of sensors and controls for energy applications and smart grids. Soloiu, the Allen E. Paulson Distinguished Chair of Renewable Energy, will be joined by mechanical engineering professor Mosfequr Rahman, Ph.D. and Elise Cain, Ph.D., director of the Educational Leadership Program in the College of Education, in developing the program. “The core requirement is to conduct state-of-the-art, transformative research in science and engineering,” explained Soloiu. “After that is complete, we bring high school and technical college teachers in to translate this research into classroom-ready modules.” Teachers will be selected from a large pool of statewide applicants to work alongside faculty and graduate students from the College of Engineering and Computing. They’ll also receive funds to incorporate that research into their curriculum. Soloiu will oversee the program as the principal investigator, with Cain serving as the education lead, bringing a multidisciplinary approach to the program. “I think interdisciplinary collaborations are vital in academic work,” noted Cain. “Faculty from the Allen E. Paulson College of Engineering and Computing contribute their technical knowledge and skills related to renewable energy, while I bring my College of Education perspectives on educational contexts and pedagogy. Working together allows us to create a robust program with immediate and lasting impacts.” Educators will visit local companies and interact with leaders in renewable energy, such as Gulfstream Aerospace in Savannah, Georgia, and Rolls-Royce Power Systems in Aiken, South Carolina. These experiences are designed to help teachers share career opportunities with students they might not otherwise encounter. “This program reflects the essence of our institutional mission,” said Cain. “It’s about discovery, teaching, and community engagement—all grounded in excellence and innovation.” Soloiu echoed those sentiments. “Many teachers and students in rural areas don’t even know what we do here at Georgia Southern,” explained Soloiu. “By engaging with educators directly, we’re creating awareness, inspiration, and pipelines to higher education and high-tech careers. This is reflective of the University’s dedication to our communities as we move towards R1 status.” Looking to know more about this important  research happening at Georgia Southern Valentin Soloiu is available to speak with media. Simply click on his icon now to arrange an interview today.

Valentin Soloiu

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Biography

Dr. Soloiu is the Endowed Chair of Renewable Energy in GSU. Research directions are in renewable and sustainable first and second generation biofuels, with emphasis on new advanced combustion technologies, heat transfer and emissions, spray dynamics, and mixture formation, smart-engine control strategies, and engine tribology. The Biofuels Combustion laboratory has 8 graduate students and 12 undergraduate students working in biofuels research.

Areas of Expertise

Heat Transfer and Emissions
Renewable and Sustainable Biofuels
Advanced Combustion Technologies

Articles

LTC (low-temperature combustion) analysis of PCCI (premixed charge compression ignition) with n-butanol and cotton seed biodiesel versus combustion and emissions characteristics...

Renewable Energy

Valentin Soloiu, Jose D Moncada, Remi Gaubert, Martin Muiños, Spencer Harp, Marcel Ilie, Andrew Zdanowicz, Gustavo Molina

2018

Direct injection (DI) of cotton seed biodiesel (CS100) with port fuel injection (PFI) of n-butanol was used for producing Premixed Controlled Compression Ignition (PCCI) to achieve low-temperature combustion (LTC) and obtain lower gaseous emissions in comparison to ULSD#2 (ultra-low sulfur diesel). PFI engine operation was compared to the combustion of binary mixtures of the same fuels reflecting the same weight ratio of high reactivity (CS100) and low reactivity (n-butanol) fuels. The supercharged engine was operated at constant speed and load with 20% exhaust gas recirculation (EGR). When compared to ULSD#2 reference, the ignition delay of 50% n-butanol and 50% CS100 binary mixture increased by 12% while the 50% n-butanol PFI with 50% CS100 DI led to a 17% decrease in ignition delay. Emissions of soot and nitrogen oxides were simultaneously improved using the PCCI strategy, reducing by 84% and 17%, respectively, given lower peak in-cylinder temperatures and increased oxygenation of the mixture. Carbon monoxide (CO) and unburned hydrocarbons (UHC) increased by several orders of magnitude as a downside of dual fuel injection; ringing intensity, however, improved, decreasing by 30% when using 50% n-butanol PFI in comparison to the ULSD#2 baseline given a smoother pressure gradients. Energy specific fuel consumption for CS50Bu50 (50% ULSD-50% n-butanol blend) increased by 4.5% compared to ULSD#2. The mechanical efficiencies and the coefficient of variation (COV) of IMEP were maintained at 70% and 2.5% respectively, during PCCI, indicating stable operation with renewable fuels.

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Numerical and Experimental Investigation of Aerodynamic Performance of Vertical-Axis Wind Turbine Models with Various Blade Designs

Journal of Power and Energy Engineering

Mosfequr Rahman, Travis E Salyers, Adel El-Shahat, Marcel Ilie, Mahbub Ahmed, Valentin Soloiu

2018

Due to the importance and advantages of Vertical-axis wind turbines (VAWTs) over traditional horizontal-axis wind turbines (HAWTs), this paper is implemented. Savonius turbines with drag-based rotors are adopted from the two more extensive arrangements of vertical wind turbines because of their advantages. In this paper, six diverse rotor plans with measure up to cleared regions are analyzed with exploratory wind burrow testing and numerical reenactments. These proposed models incorporate a conventional Savonius with two different edges criteria and 90 degree helical bend models with two, three and four sharp edges. The models were designed using SolidWorks software then the physical models were 3D printed for testing. A subsonic open-sort wind burrow was utilized for Revolution per Minute (RPM) and torque estimation over a scope of wind speeds. ANSYS Fluent reenactments were utilized for dissecting streamlined execution by using moving reference outline and sliding lattice display methods. A 3-dimensional and transient strategy was utilized for precisely tackling torque and power coefficients. The five new rotor geometries have important advantages such as making a focal point of weight advance from the hub of revolution and causing more noteworthy torque on the turbine shaft contrasted with the customary Savonius turbine. Our new models with the names of CC model and QM model display cross-areas lessen the aggregate scope of negative torque on the edges by 20 degrees, contrasted with the customary Savonius demonstrate. Helical plans are better spread the connected torque over a total transformation resulting in positive torque over every single operational point. Moreover, helical models with 2 and 3 cutting edges have the best self-starting ability in low wind speeds. Helical VAWT with 3 edges starts revolution of 35 RPM at only 1.4 m/s wind speed under no generator stacking. The most noteworthy power coefficient is accomplished, both tentatively and numerically, by the helical VAWT with 2 sharp edges.

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Free Convection Heat Transfer From Sierpinski Carpet Fractal Fins of Varying Size

ASME 2017 International Mechanical Engineering Congress and Exposition

David Calamas, Daniel Dannelley, Jennifer Shaffer, Valentin Soloiu

2017

This works experimentally investigates the thermal performance of extended surfaces inspired by the first four fractal iterations of the Sierpinski carpet fractal pattern in a free convection environment. Fractal fins inspired by the Sierpinski carpet fractal pattern can result in an increase in surface area for convective heat transfer coupled with a simultaneous decrease in mass and are thus desirable in aerospace applications. The thermal performance of the Sierpinski carpet fractal fins was quantified based on fin efficiency, fin effectiveness, and perforated fin effectiveness. When compared with a solid rectangular fin, without perforations, and of an equal base area and package volume a fin inspired by the fourth iteration of the Sierpinski carpet fractal pattern was found to be more effective at dissipating heat by convection. The impact of fin size on the thermal performance of the fractal fins was investigated for a range of power inputs applied at the base (2.5 W, 5 W, and 10 W). A 5.08 cm × 5.08 cm (2 in × 2 in × 1/16 in) fractal fin inspired by the fourth iteration of the Sierpinski carpet fractal was found to have a convective effectiveness, convective efficiency, and convective effectiveness per unit mass, 10.91% more, 10.31% less, and 77.65% more, than a traditional solid (non-perforated) rectangular fin of equal height, width, and thickness. Similarly, a 10.16 cm × 10.16 cm (4 in × 4 in × 1/8 in) fin inspired by the fourth fractal iteration was found to have a convective effectiveness, convective efficiency, and convective effectiveness per unit mass, 3.97% more, 15.91% less, and 66.54% more, than a traditional solid (non-perforated) rectangular fin of equal height, width, and thickness. Thus, the thermal performance of the fractal fins increased as the size of the fins decreased. Regardless of size, the contribution of thermal radiation was significant (often greater than 50%) and should not be neglected. In general, for a fin with a uniform cross-section, intersurface thermal radiation accounts for a significant percentage of thermal radiation heat transfer, particularly as the size of the perforations decreases.

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