2001 volume 33(3)
doi:10.1068/htwu490

Cite as:
Hartmann H-J, Huber K, Schmid J, 2001, "Harmonisation of test and calculation methods to evaluate the heat transfer across building components" High Temperatures - High Pressures 33(3) 329 – 335

Harmonisation of test and calculation methods to evaluate the heat transfer across building components

Hans-Jürgen Hartmann, Konrad Huber, Josef Schmid

Received 20 December 1999

Abstract. Draft CEN (and ISO) standards for hot-box U value measurements of windows and insulated glazing units require calibration measurements to be carried out with glazed calibration panels of known thermal conductance. This panel design has been validated by five European partner laboratories which each made panels to an agreed specification and carried out the calibration procedures specified in prEN 12412-1. The panels were then circulated to the other partner laboratories who measured their U values using the CEN procedure. The work demonstrated that the uncertainty of the subsequent U value measurements made by the calibration data were within ±7%. The sensitivity of the CEN measurement procedures to the calculated conductance and temperature measurement accuracy is discussed and some improvements are suggested for the draft standards.

Restricted material:

PDF Full-text PDF size: 114 Kb

Your computer (IP address: 38.107.191.81) has not been recognised as being on a network authorised to view the full text or references of this article. Please contact your serials librarian (subscriptions information).