Williams, R G; Hall, D J (1997) DOE Research contract 39/3/279 - Hot-box measurements of eight window systems. NPL Report. QM 132

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Abstract

This report presents the results of V-value measurements made on eight glazed window systems as part of the DOE "Partners in Technology Programme". The frames measured were i) thermally broken Aluminium frame; ii) Hard wood frame; iii) UPVC frame; iv) high performance thermally broken double window. The frames were measured with different air filled double glazed units with different air gaps, number of low-E coated surfaces, spacer bar systems and with a secondary glazed unit. The measurements were carried out in the NFL Wall Guarded Hot Box using the procedures specified in draft CEN standard prEN 12412-1 and a conventional, "direct" procedure. The results of hot box measurements of two glazed calibration panels, reported in NPL report QMl15, were used to evaluate the window V-values.

Item Type:	Report/Guide (NPL Report)
NPL Report No.:	QM 132
Subjects:	Engineering Measurements Engineering Measurements > Thermal
Last Modified:	02 Feb 2018 13:18
URI:	https://eprintspublications.npl.co.uk/id/eprint/691