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College of Arts & Sciences

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Physics research team makes new progress on renewable energy project in Botswana

Supported by a (NSF) grant, researchers from USF’s College of Arts and Sciences Department of Physics have been engaged in a multi-year project to develop a portable, renewable energy source specifically designed for the needs of rural African communities.

USF ܽƵapps demonstrating the solar cell enhancements with BIUST ܽƵapps. (Photo courtesy of Madison Orr)

USF ܽƵapps demonstrating the solar cell enhancements with BIUST ܽƵapps. (Photo courtesy of Madison Orr)

“Most rural villages in Africa lack basic infrastructure to bring electricity to their villages. Portable sources are the best solution for them and they welcome these efforts to improve their lives,” Dr. Sarath Witanachchi, chair and ܽƵapp, explained.  
“The primary goal of this NSF-sponsored project is to explore a new concept that combines solar cells and waste heat to develop a portable, renewable energy source [for rural Africa].”

Waste heat is produced as a byproduct of energy-using processes. With coal being one of Botswana’s primary energy sources, Witanachchi and his team dedicated their spring semester to learning how to convert heat into thermoelectric energy. This would boost the power output of the solar cells, enhancing the efficiency of these clean energy sources.

After the spring semester concluded, the researchers packed their bags to apply their knowledge in the real world and share their insights with ܽƵapps at the (BIUST), creating an unforgettable learning experience.

“One primary objective was proving the concept of combining solar energy and thermoelectric energy to increase the effectiveness of renewable energies in rural areas ─ which were highly prominent in the areas we visited,” Joshua Townsend, PhD ܽƵapp and lead researcher of the group, explained. “Our other objective was to facilitate these research objectives in a multicultural and multidisciplinary setting. This allowed USF ܽƵapps to learn the project and use this knowledge to teach and collaborate with ܽƵapps in Botswana while being submersed in their culture and day-to-day activities.”

In addition to establishing daily goals and gathering data in the lab, the ܽƵapps were able to spend a lot of free time with BIUST colleagues to learn more about life in Botswana.

Biology ܽƵapp Madison Orr (left) with BIUST ܽƵapps Boitumelo Gaolape and Kago Mashabe. (Photo courtesy of Madison Orr)

Biology ܽƵapp Madison Orr (left) with BIUST ܽƵapps Boitumelo Gaolape and Kago Mashabe. (Photo courtesy of Madison Orr)

“The highlight of my time at BIUST was definitely building a rapport with the BIUST ܽƵapps. I immediately bonded with another ܽƵapp, Kago, over volleyball, and after that first interaction, we became good friends,” said biology major Madison Orr.

This experience left ܽƵapps with respect for their Batswanan colleagues’ flexibility in applying their research with limited resources and an appreciation for the resources we have available to us stateside.

“At U.S. universities, we take advantage of the quick and easy Amazon Prime delivery or shops that are just down the street for materials, but in Botswana, there was no quick and easy access, so it brought up additional problems to solve,” Orr explained. “We had to learn the importance of delegation and to find a role for everyone that suits their niche.”

Students also returned home with a new understanding of applied physics.
 
“The most rewarding part of working on this project was being able to teach the ܽƵapps at BIUST with hands-on experience. I had never realized how much USF offers ܽƵapps important teaching tools such as lab experiments and connecting physics theory back to physical representations,” physics ܽƵapp Spencer Hernandez said.

“Working on this project has given me a better understanding of the expectations and setbacks that come with physics research,” said Kevin Gorgey. “As a physics major, we rarely get the opportunity to work with electrical systems in a practical sense outside of brief lab work so I feel like this experience has given me invaluable experience that will undoubtedly help with future career opportunities.”

Though this is the final phase of the four-year NSF grant, Witanachchi hopes to continue the tradition of instilling a deep respect for other cultures in a meaningful and applicable way for his ܽƵapps.

“So, we’ll continue,” he said. “We’ll go back to Africa, or maybe another country. I really look forward to providing these international research experiences for USF ܽƵapps. They really benefit from it.”

BIUST ܽƵapps applying the enhancements to the solar cell(s). (Photo courtesy of Sarath Witanachchi)

BIUST ܽƵapps applying the enhancements to the solar cell(s). (Photo courtesy of Sarath Witanachchi)

Dr. Witanachchi (right) instructing ܽƵapps testing solar cells outside ISA weeks before their trip to Botswana. (Photo by of Corey Lepak)

Dr. Witanachchi (right) instructing ܽƵapps testing solar cells outside ISA weeks before their trip to Botswana. (Photo by of Corey Lepak)

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