Heat Storage Thermoelectric Generator for Wireless IOT Sensing Systems
Heat Storage Thermoelectric Generator for Wireless IOT Sensing Systems
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DOI：
10.1109/transducers50396.2021.9495686
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发表时间：
2021-06
期刊：
影响因子：
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通讯作者：
Truong Thi Kim Tuoi;Nguyen Van Toan;T. Ono
中科院分区：
文献类型：
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作者：
Truong Thi Kim Tuoi;Nguyen Van Toan;T. Ono
本文展示了一种新的方法，使用热电发电机（TEG），将热能从环境温度波动转化为电力的便携式设备的电源。本文报道了一种集成相变材料（PCM）的温差发电器的理论建模和实验验证。所提出的装置使用PCM将环境温度变化转换成TEG上的温度差，因此温度变化可以产生电能。最大输出功率可达0.6 mW，在5°C至35°C的环境温度变化下（使用温控炉），对应的功率密度为37.5 µW/cm 2。由TEG产生的电力可以经由DC-DC转换器存储在电容器中。在室温附近的环境温度波动下，最大输出功率和电容器中的可存储能量分别为30 µW和500 mJ。这项工作中的调查可能会导致无电池无线传感系统的高潜力。
This paper demonstrates a new approach using a thermoelectric generator (TEG) which converts thermal energy from ambient temperature fluctuations into electricity for the power source of portable devices. Theoretical modeling and experimental validation of a thermoelectric generator integrated with a phase change material (PCM) are reported in this paper. The proposed device converts the ambient temperature variations into a temperature difference on the TEG using a PCM, thus temperature variations can produce electrical energy. The maximum output power can reach 0.6 mW which corresponds to a power density of 37.5 µW/cm2 under the ambient temperature variants from 5°C to 35°C (using the temperature-controlled oven). The electric power generated by TEG can be stored in a capacitor via a DC-DC converter. The maximum output power and the storable energy in the capacitor are 30 µW and 500 mJ, respectively, under ambient temperature fluctuations near room temperature. The investigation in this work could possibly lead to high potential for battery-free wireless sensing systems.