Heat loss through connecting thermistor wires in a three-body graphite calorimeter

D. Radu, A.S. Guerra, C. Ionita, I. Astefanoaei

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Abstract

The main aim of this paper is to calculate the small but significant amount of heat lost from a graphite calorimeter absorber through connecting thermistor wires during electrical calibration. Taking into account the electro-thermal interaction between the heating thermistor and its surrounding environment, a more realistic approach to the problem was developed and estimative numerical results were obtained. It was found that the wires contribute about 0.01% in extracting heat from the calorimeter core (which corresponds to a correction factor kwcore = 0.9999). The total correction factor for heat loss through the connecting thermistor wires during the electrical calibration of the calorimeter (the total combined effect of the heater and the sensor leads due to conduction, radiation and Joule effect) was determined: kw = 0.9989. © 2010 BIPM & IOP Publishing Ltd.
Original languageEnglish
Article number009
Pages (from-to)179 - 191
Number of pages13
JournalMetrologia
Volume47
Issue number3
DOIs
Publication statusPublished - 2010
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Radu, D., Guerra, A. S., Ionita, C., & Astefanoaei, I. (2010). Heat loss through connecting thermistor wires in a three-body graphite calorimeter. Metrologia, 47(3), 179 - 191. [009]. https://doi.org/10.1088/0026-1394/47/3/009