DOAJ Open Access 2023

Apparatus Development for the Measurement of the Thermal Conductivity of Geothermal Backfill Materials

C. Castán-Fernández G. Marcos-Robredo M. P. Castro-García M. A. Rey-Ronco T. Alonso-Sánchez

Abstrak

This paper describes the design, construction, validation, and calibration of a thermal conductivity measuring apparatus for geothermal backfill materials in the range from 0.13–2.80 W/m·K. The developed apparatus is based on the Transient Hot Wire (THW) method whose mathematical basis is the Infinite Linear Source (ILS) model. The apparatus consists of a nichrome hot wire, an adjustable direct current power supply, a temperature sensor (K-type thermocouple), and a datalogger. For the validation and calibration of the developed apparatus, four standard samples have been used with a known thermal conductivity, to 3.0 W/m·K. Furthermore, the thermal conductivity of four geothermal backfill materials of common use (bentonite, neat cement, cement–sand mortar, and cement–bentonite mortar) has been measured using both the developed apparatus and a commercial meter.

Topik & Kata Kunci

Engineering machinery, tools, and implements Technological innovations. Automation

Penulis (5)

C. Castán-Fernández

G. Marcos-Robredo

M. P. Castro-García

M. A. Rey-Ronco

T. Alonso-Sánchez

Format Sitasi

APA MLA BibTeX

Castán-Fernández, C., Marcos-Robredo, G., Castro-García, M.P., Rey-Ronco, M.A., Alonso-Sánchez, T. (2023). Apparatus Development for the Measurement of the Thermal Conductivity of Geothermal Backfill Materials. https://doi.org/10.3390/inventions8010030

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Informasi Jurnal

Tahun Terbit: 2023
Sumber Database: DOAJ
DOI: 10.3390/inventions8010030
Akses: Open Access ✓