New machine functions using waste heat recovery: A case study of atmospheric pressure plasma jet

Ping-Chia Hsu, Ahmad Abror Saragih, Mei-Jiau Huang and Jia-Yang Juang

Energy, 2022, vol. 239, issue PD

Abstract: Intelligent machines, the cornerstone of Industry 4.0, possess various sensors for monitoring key processing and environmental parameters. These sensors demand additional power, while the machines often produce waste heat. Hence, we propose using a thermoelectric generator (TEG) to recover the waste heat and generate electricity to drive these sensors. A standard design for an atmospheric pressure plasma jet (APPJ) is demonstrated in this work. A so-driven multi-functional monitoring system monitors the processing temperature of the APPJ and air quality in the surroundings, transmits the data to cloud storage, and alarms if the temperature or air quality exceeds a preset value. We study three different arrangements of TEGs and find that double TEGs connected in series thermally and electrically generate the most power of 1.09 ± 0.0002 W at a current of 0.187 ± 0.002 A, which is sufficient to drive the monitoring system continuously. We also perform three-dimensional finite element transient thermal simulations to pre-assess the detailed temperature distribution for film-quality control and the potential for power generation. Our method can be readily applied to other machines with high waste heat for adding sensors/actuators without consuming extra power.

Keywords: Intelligent machines; Atmosphere pressure plasma jet (APPJ); Waste heat recovery; Thermoelectric generator (TEG); Sensing and monitoring (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:239:y:2022:i:pd:s0360544221026219

DOI: 10.1016/j.energy.2021.122372

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