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Proceedings Paper

Scaling of dynamic thermoelectric harvesting devices in the 1-100 cm3 range
Author(s): M. E. Kiziroglou; A. Elefsiniotis; N. Kokorakis; S. W. Wright; T. T. Toh; P. D. Mitcheson; U. Schmid; Th. Becker; E. M. Yeatman
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Paper Abstract

Aircraft sensors are typically cable powered, imposing a significant weight overhead. The exploitation of temperature variations during flight by a phase change material (PCM) based heat storage thermoelectric energy harvester, as an alternative power source in aeronautical applications, has recently been flight tested. In this work, a scaled-down and a scaled-up prototype are presented. Output energy of 4.1 J per gram of PCM from a typical flight cycle is demonstrated for the scaled-down device, and 3.2 J per gram of PCM for the scaled-up device. The observed performance improvement with scaling down is attributed to the reduction in temperature inhomogeneity inside the PCM. As an application demonstrator for dynamic thermoelectric harvesting devices, the output of a thermoelectric module is used to directly power a microcontroller for the generation of a pulse width modulation signal.

Paper Details

Date Published: 21 May 2015
PDF: 8 pages
Proc. SPIE 9517, Smart Sensors, Actuators, and MEMS VII; and Cyber Physical Systems, 95172F (21 May 2015); doi: 10.1117/12.2181209
Show Author Affiliations
M. E. Kiziroglou, Imperial College London (United Kingdom)
A. Elefsiniotis, Airbus Group (Germany)
N. Kokorakis, Airbus Group (Germany)
S. W. Wright, Imperial College London (United Kingdom)
T. T. Toh, Imperial College London (United Kingdom)
P. D. Mitcheson, Imperial College London (United Kingdom)
U. Schmid, Technische Univ. Wien (Austria)
Th. Becker, Airbus Group (Germany)
E. M. Yeatman, Imperial College London (United Kingdom)

Published in SPIE Proceedings Vol. 9517:
Smart Sensors, Actuators, and MEMS VII; and Cyber Physical Systems
José Luis Sánchez-Rojas; Riccardo Brama, Editor(s)

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