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Energy and efficiency in absorbtion: Will milage be redefined?

November 1st, 2021
Automotive and Assembly

Energy and efficiency in absorbtion: Will milage be redefined?

November 1st, 2021
Automotive and Assembly

Researchers at Northwestern University have incorporated strontium telluride nanocrystals into lead telluride, a material that can use electricity from heat-generating materials such as automobile exhaust systems, industrial processes and equipment, and solar energy. Scientists have seen light in the past.

The material has high thermoelectric properties and is expected to convert 14% of the heat loss into electricity, which is a scientific advancement. Northwestern chemists, physicists, and materials scientists jointly developed this material. The research results were published in the journal Nature Chemistry.

“As we all know, semiconductors have been able to use electricity for 100 years,” Charles E. and Emma H., professor of chemistry at Weinberg College of Arts and Sciences. Morrison said. “In order to make it an efficient process, you only need the right ingredients. We have found a formula or system to make these ingredients.”

What chemicals are used in this discovery

Conatzidis, the co-author of the study, and his team dispersed nanocrystals made of strontium telluride (SrTe) into lead telluride (PbTe) materials. Previous attempts to incorporate this kind of nano-scale into bulk materials have improved the energy conversion efficiency of lead telluride, but nano-integration has also increased the scattering of electrons and lowered the overall conductivity. In this study, the Northwest team provided the first example of the use of nanostructures in lead telluride to reduce electron scattering and improve the energy conversion efficiency of the material.

Increasing the energy generated by the shock absorber by “cutting” the fuel efficiency of the car and feeding it back to the electrical system such as the battery or air conditioning is an important goal of car manufacturing. Now, a researcher at the University of Huddersfield has made a breakthrough by developing a new system and preparing a prototype for actual testing.

Ruchen Wang did a doctoral project at the university and published the results. The article in Energy Magazine is entitled “Modeling, Testing and Analysis of Regenerative Hydraulic Impact Systems”. It summarizes current developments in the field of vehicle energy harvesting and provides a detailed overview of the theoretical and practical development of its equipment, which is designed for installation in heavy commercial vehicles.

How to properly recover energy

PhD. Wang from Qingdao in eastern China changed his doctoral thesis after studying mechanical engineering at the University of Huddersfield. His doctoral supervisors are Professor Andrew Ball and Dr. Feng Shugu suggested to study energy recovery devices to solve this problem, because most of the energy in vehicle fuel is wasted.

A lot of work has been done to extract energy from the braking system, for which Dr. focused on Wang Levitation.

After conducting mathematics, computer analysis and design of his equipment, Ph.D. Wang personally showed off the full-scale prototype (pictured on the right) that he was going to test-this is a practical engineering skills demonstration, which left a deep impression on his mentor, Professor Bauer.

“The result is a real practical application of energy recovery from typical road vehicles. Ruchen developed a theoretical prediction model and empirically tested it, and there is a perfect connection between the two,” he added.

How this helps energy efficiency

Professor Bauer said that the received energy can be used for any auxiliary purposes of the vehicle, and in a hybrid vehicle, it can charge the electric motor.

The next step is to cooperate with industrial partners. Wang installs and tests on a road vehicle. But there is a wide range of applications in technology, and there are various ways to apply it to rail vehicles—especially since Dr. Wang started a full-time research position at the University of Huddersfield Railway Research Institute (IRR).

PhD. Paul Allen, head of the IRR Railway Innovation Center, explained: “We are now studying how Dr. has two industrial partners.”

“We can connect this material to a cheap device with some wires, and then connect it to something like a light bulb,” said Vinayak Dravid, author of Materials Science and Technology at the Northwest McCormick School of Engineering and Applied Sciences. . professor. Paper. “The device can increase the efficiency of the light bulb by absorbing the heat it generates and converting some of the heat (10% to 15%) into more useful energy (such as electricity).”

Automobiles, chemicals, bricks, glass, and any industry that uses heat to make products can use this scientific breakthrough to improve the efficiency of their systems, said Knatzidis, who holds a joint position at the Argonne National Laboratory.

“The energy crisis and the environment are the two main reasons for the enthusiasm for this research, but this may be just the beginning,” Dravid said. “This structure may have other effects on the scientific community that we have not yet considered, such as improving mechanical behavior and strength or rigidity. I hope that others can adopt and use the system.”

Article by:

Armin Vali

Adapted from: Sciencedaily.

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