Report/Guide

Williams, R G; Ballard, G (2007) Evaluation of the thermal performance of insulation systems used in roof structures. NPL Report. MAT 8

Williams, R G; Ballard, G (2004) An investigation of measurement procedures needed to determine thermal transmittance of deep structures using both horizontal and vertical heat flow. NPL Report. DEPC-TH 002

Williams, R G; Ballard, G (2004) An evaluation of the effect of high performance spacer bars on the thermal performance of a range of window systems. NPL Report. DEPC-TH 001

Williams, R G; Ballard, G (2003) Validation of the NPL rotatable wall guarded hot box with horizontal heat flow. NPL Report. CBTLM 25

Williams, R G; Ballard, G (2003) Calibration of a surround panel used to measure window and door U-values in the rotatable hot box apparatus as specified in BS EN ISO 12567-1:2000. NPL Report. CBTLM 26

Williams, R G; Ballard, G (2002) Calibration of a surround panel used to measure window U-values in a hot box apparatus as specified in BS EN ISO 12567-1:2000. NPL Report. CBTLM 18

Williams, R G; Hall, D A (1998) Laboratory intercomparison of Hot Box measurements of a glazed window system using the measurement procedures given in ISO/DIS 12567 and prEN 12412-1 standards. NPL Report. CBTM 5

Williams, R G; Hall, D A (1997) SM&T Project 3032 - Contract MATI-CT 940063. Final summary report - Design and validation of glazed calibration panels required for the measurement of thermal transmittance of glazed assemblies. NPL Report. CBTM 2

Williams, R G; Hall, D A (1997) SM&T Project 3032 - Contract MATI-CT 940063. Report of the NPL hot box measurements using the procedures specified in prEN 12412-1 with 1.2m X 1.2m glazed calibration panels. NPL Report. CBTM 1

Williams, R G; Harris, R* (1997) DOE Research contract 39/3/279 - Comparison between the measured, simulated and calculated U-values of eight window systems. NPL Report. QM 131

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

Williams, R G (1996) Interim report SM&T Framework III project 3032 - calibration panels for thermal transmittance of glazed assemblies. NPL Report. QM 122

Williams, R G; Harris, R* (1996) Department of the Environment, partners in technology, technical infrastructure programme. Validation of thermal performance design tools for window frame construction: an independent verification by agreed measurement procedures. Report on phase 1 - comparison between the measured and simulated U-values of three window systems comprising a thermally broken aluminium frame, a PVC-U frame and a hardwood frame. NPL Report. QM 119

Williams, R G; Hall, D A (1995) Report on hot box measurements made of two 1.48m x 1.23m glazed, calibrated reference panels as specified in ISO/CD 12567 and CEN/TC 89 WI 26 part 2 03.1995. NPL Report. QM 115

Article

Salmon, D R; Williams, R G; Tye, R P (2002) Thermal conductivity and moisture measurements on masonry materials. ASTM Spec. Tech. Publ., 1426. pp. 58-78.

Conference or Workshop Item

Williams, R G; Tye, R (2003) Validation of measurement techniques and the determination of data required for thermal modelling of moist masonry walls. In: 2nd International Conference on Building Physics, 2003, Leuven, Belgium.

Williams, R G (2002) Overview of a project to determine the thermal resistance of masonry walls in dry and moist states and a conversion procedure to determine the appropriate design value. In: 6th International Symposium on Building Physics in the Nordic Countries, 2002.