Thermopile power measurement for heat balance calorimetry


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International Journal on Smart Sensing and Intelligent Systems

Professor Subhas Chandra Mukhopadhyay

Exeley Inc. (New York)

Subject: Computational Science & Engineering, Engineering, Electrical & Electronic


eISSN: 1178-5608



VOLUME 7 , ISSUE 5 (December 2014) > List of articles

Special issue ICST 2014

Thermopile power measurement for heat balance calorimetry

Callum M. Johnston * / Bryan P. Ruddy / Poul M. F. Nielsen / Andrew J. Taberner

Keywords : Calorimetry, thermal variables measurement, thermal sensors, thermal noise

Citation Information : International Journal on Smart Sensing and Intelligent Systems. Volume 7, Issue 5, Pages 1-6, DOI:

License : (CC BY-NC-ND 4.0)

Published Online: 15-February-2020



Very high resolution power sensors are required for measuring the rate of heat production (~10 µW) of small samples of heart muscle (rat cardiac trabeculae, ~2 mm long and ~200 µm diameter). In this paper, we examine the design criteria for thermopiles to maximize their signal-to-noise ratio for heat balance calorimetry. We found that those thermopiles with a high thermoelectric figure-of-merit (ZT) are the best for power measurements. An initial prototype with a resolution of 53 nW has been built.

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