Hostname: page-component-cd9895bd7-gvvz8 Total loading time: 0 Render date: 2024-12-27T21:06:15.273Z Has data issue: false hasContentIssue false
  • English
  • Français

Uncertainty analysis of thermal conductivity measurements inmaterials for energy-efficient buildings

Published online by Cambridge University Press:  10 January 2012

L. Laghi ,
F. Pennecchi  and
G. Raiteri
L. Laghi*
Affiliation:
CertiMaC ScarL, Via Granarolo 62, 48018 Faenza, Italy
F. Pennecchi
Affiliation:
INRiM - Istituto Nazionale di Ricerca Metrologica, Strada delle Cacce 91, 10135 Torino, Italy
G. Raiteri
Affiliation:
ENEA, Agenzia Nazionale per le Nuove Tecnologie, l’Energia e lo Sviluppo Economico Sostenibile, UTTMATF, Faenza Material Technologies Techn. Unit, Via Ravegnana 186, 48018 Faenza, Italy
*
⋆Correspondence: l.laghi@certimac.it
Get access

Abstract

The accuracy of thermal conductivity measurements is even more requested for materialscharacterization in energy-efficient buildings field. ENEA-UTTMATF and CertiMaC researchgroup, as national institute and private laboratory respectively, cooperate in developmentof new measurement and analysis methods applied to buildings materials and theirperformances. For what concerns this kind of measurements, an Heat Flow-meter Transducer(HFT) is used. In order to give to both customers and other research institutes involvedin the same field (e.g. International Comparison or International Round Robin Tests) themost exhaustive evaluation of the tested material thermal conductivity, a completeuncertainty analysis is implemented on the HFT measures. This uncertainty analysis,developed accordingly to the international standards and with the contribution of INRiMInstitute, is described in this paper.

Keywords

Energy efficiencybuilding materialsheat flow metercalibrationregression analysisuncertainty budgetthermal conductivity.
Type
Research Article
Information
International Journal of Metrology and Quality Engineering , Volume 2 , Issue 2 , 2011 , pp. 141 - 151
Copyright
© EDP Sciences 2012

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

UnithermTM 2022 Heat Flow Meter Software & Operation Manual
ASTM E1530-2004, Standard Test Method for Evaluating the Resistance to Thermal Transmission of Materials by the Guarded Heat Flow Meter Technique
Evaluation of measurement data, Guide to the expression of uncertainty in measurement JCGM 100:2008 (http://www.bipm.org/utils/common/documents/jcgm/JCGM_100_2008_E.pdf)
EN 12664:2002, Thermal performance of building materials and products, Determination of thermal resistance by means of guarded hot plate and heat flow meter methods, Dry and moist products of medium and low thermal resistance
EN 12667:2002, Thermal performance of building materials and products, Determination of thermal resistance by means of guarded hot plate and heat flow meter methods, Products of high and medium thermal resistance
Misurare per decidere, Misure e statistica di base, edited by G. Barbato (Società Editrice Esculapio s.r.l., Bologna, Italy, 2002)
Statistica e probabilità per ingegneri, edited by G. Vicario, R. Levi (Società Editrice Esculapio s.r.l. Bologna, Italy, 2001)
Applied Regression Analysis, edited by N.R. Draper, H. Smith (John Wiley & Sons, Inc., New York, London, Sydney, 1966)
Balsamo, A., Mana, G., Pennecchi, F., On the best fit of a line to uncertain observation pairs, Metrologia 42, 376–382 (2005) CrossRefGoogle Scholar
Milton, M.J.T., Harris, P.M., Smith, I.M., Brown, A.S., Goody, B.A., Implementation of a generalized least-squares method for determining calibration curves from data with general uncertainty structures, Metrologia 43, S291–S298 (2006) CrossRefGoogle Scholar