Research and development of a new combination of piezo-thermoelectric energy harvester systems from roadways.
Résumé
Due to the problems associated with fossil fuels, scientists and
governments are investigating alternative energy sources. In recent decades, there
has been an increase in interest in initiatives involving the collection of clean,
limitless energy. This paper focuses on two renewable energy harvesting combination
technologies: mechanical vibration utilizing piezoelectric technology and thermal
sources utilizing thermoelectric technology. Existing scientific literature proposes
various techniques for producing and modeling each system individually. This
study proposes a novel piezo-thermoelectric pavement model with piezo-thermoelectric
coupling. Due to the lack of typical experimentation in the scientific literature,
a new laboratory experimental prototype proposes to reproduce artificially and
simultaneously heat harvesting on the artificial road surface and mechanical vibration
caused by passing vehicles. Testing the laboratory-developed prototype has determined
the efficacy of the piezo-thermoelectric coupling electronic model. This study
demonstrated that a hybrid piezo-thermoelectric system is more suitable for road
pavement applications than a piezo-thermoelectric coupling system. A hybrid
combination system can continue to produce energy even if one of the energy sources
is unavailable or malfunctioning, whereas a coupling combination system cannot.
In laboratory testing, the combined piezo-thermoelectric harvester proposed could
generate up to 1.75 μW without optimizing the materials or power generation.
This innovative study demonstrates the feasibility and applicability of combining
thermoelectric and piezoelectric technology to harvest energy from road surfaces.
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