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Article

A Miniaturized 3D Heat Flux Sensor to Characterize Heat Transfer in Regolith of Planets and Small Bodies

1
Micro and Nano Technologies Group, Electronic Engineering Department, Universitat Politècnica de Catalunya—BarcelonaTech, 08034 Barcelona, Spain
2
Centro de Astrobiologia (INTA-CSIC), 28850 Torrejón De Ardoz, Spain
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(15), 4135; https://doi.org/10.3390/s20154135
Received: 7 June 2020 / Revised: 16 July 2020 / Accepted: 23 July 2020 / Published: 25 July 2020
(This article belongs to the Section Physical Sensors)
The objective of this work is to present the first analytical and experimental results obtained with a 3D heat flux sensor for planetary regolith. The proposed structure, a sphere divided in four sectors, is sensible to heat flow magnitude and angle. Each sector includes a platinum resistor that is used both to sense its temperature and provide heating power. By operating the sectors at constant temperature, the sensor gives a response that is proportional to the heat flux vector in the regolith. The response of the sensor is therefore independent of the thermal conductivity of the regolith. A complete analytical solution of the response of the sensor is presented. The sensor may be used to provide information on the instantaneous local thermal environment surrounding a lander in planetary exploration or in small bodies like asteroids. To the best knowledge of the authors, this is the first sensor capable of measuring local 3D heat flux. View Full-Text
Keywords: heat flux; regolith; thermal inertia; planetary exploration heat flux; regolith; thermal inertia; planetary exploration
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MDPI and ACS Style

Domínguez-Pumar, M.; Rodríguez-Manfredi, J.-A.; Jiménez, V.; Bermejo, S.; Pons-Nin, J. A Miniaturized 3D Heat Flux Sensor to Characterize Heat Transfer in Regolith of Planets and Small Bodies. Sensors 2020, 20, 4135. https://doi.org/10.3390/s20154135

AMA Style

Domínguez-Pumar M, Rodríguez-Manfredi J-A, Jiménez V, Bermejo S, Pons-Nin J. A Miniaturized 3D Heat Flux Sensor to Characterize Heat Transfer in Regolith of Planets and Small Bodies. Sensors. 2020; 20(15):4135. https://doi.org/10.3390/s20154135

Chicago/Turabian Style

Domínguez-Pumar, Manuel, Jose-Antonio Rodríguez-Manfredi, Vicente Jiménez, Sandra Bermejo, and Joan Pons-Nin. 2020. "A Miniaturized 3D Heat Flux Sensor to Characterize Heat Transfer in Regolith of Planets and Small Bodies" Sensors 20, no. 15: 4135. https://doi.org/10.3390/s20154135

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