Bibliographic Details
| Title: |
Thermal Conductivity Measurements By Means of a New 'Small Hot-Box' Apparatus: Manufacturing, Calibration and Preliminary Experimental Tests on Different Materials. |
| Authors: |
Buratti, C.1 cinzia.buratti@unipg.it, Belloni, E.1 belloni.unipg@ciriaf.it, Lunghi, L.1 lunghi.unipg@ciriaf.it, Barbanera, M.1 barbanera@crbnet.it |
| Source: |
International Journal of Thermophysics. May2016, Vol. 37 Issue 5, p1-23. 23p. |
| Subjects: |
Thermal conductivity measurement, Calibration, Heat equation, Thermal insulation, Methodology, Measurement |
| Abstract: |
The evaluation of the thermal performance building components requires a high level of accuracy. Windows, doors and thermal bridges are not homogeneous, and their thermal transmittance can be evaluated by means of Hot-Box, used for full-scale elements. For homogeneous materials and one-dimensional heat flux, the thermal conductivity can be easily measured through other experimental apparatuses, such as the guarded hot plate and the heat flow meters. This study presents a new experimental apparatus named Small Hot-Box, built at the University of Perugia. No European standards are available for this innovative facility, but it takes into account some prescriptions of EN ISO 8990 and EN ISO 12567; it was built for the evaluation of the thermal properties of small specimens. The apparatus was designed, built, and calibrated by means of preliminary measurements. It is composed of a hot and a cold side, and the external walls are made of thick insulation. The thermal conductivity can be calculated by two different methodologies: the Hot-Box and the thermal flux meter method. Preliminary calibrations were carried out and different materials with known thermal transmittance were tested. The aim is the development of a new experimental apparatus; guidance documents could be defined for the measurements methodology requirements. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
