Enhanced energy-generation performance of a landfilled road-capable piezoelectric harvester to scavenge energy from passing vehicles
| Autor: | Jae Yong Cho, Seong Do Hong, Haimoon Cheong, Wonseop Hwang, Jung Hwan Ahn, Se Yeong Jeong, Gi Hoon Kim, Yooseob Song, Tae Hyun Sung, Kyung Bum Kim |
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| Rok vydání: | 2020 |
| Předmět: |
Renewable Energy
Sustainability and the Environment business.industry 020209 energy Electric potential energy Energy Engineering and Power Technology 02 engineering and technology Finite element method Automotive engineering Power (physics) Fuel Technology Electricity generation 020401 chemical engineering Nuclear Energy and Engineering 0202 electrical engineering electronic engineering information engineering Environmental science Electricity 0204 chemical engineering business Energy (signal processing) Power density Voltage |
| Zdroj: | Energy Conversion and Management. 215:112900 |
| ISSN: | 0196-8904 |
| DOI: | 10.1016/j.enconman.2020.112900 |
| Popis: | We demonstrate the use of a road-capable piezoelectric harvester (RCPH) with improved maintenance and power-generation characteristics. The RCPH obtained its ingress and moisture protection system rating (IP 66) through a new housing system used to evaluate its waterproof performance. Finite element simulations were performed to identify the proper depth (1, 3, or 5 cm) under an actual road for its placement to achieve increased output power. The highest von Mises stress value was measured by the 1 cm landfilled module (1LFM). The RCPH was installed under a test road and was tested with the use of the exposed and landfilled method to compare output power levels. Correspondingly, the output voltage and output power of the 1LFM were higher the exposed module. When a minivan drove over the 1LFM at 90 km/h, an output voltage of 18 Vmax and an output power of 1150 mWmax (power density: 1.15 mW/cm2) were measured at a load resistance level of 910 Ω. In a test road environment, the electrical energy generated by the 1LFM was sufficient to illuminate four delineators for 40 s. This system could be used on actual roads by connecting the piezoelectric modules to an emergency lighting that can be powered by the electricity generated by the module. |
| Databáze: | OpenAIRE |
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