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Since 1978, new houses in New Zealand have had to achieve minimum levels of thermal insulation. A large field survey was carried out during the winter of 1983. This paper outlines the basis of the survey, the equipment used, and the measurement issues raised by the use of heat flux sensors. The results from a pilot study of 25 houses are discussed in terms of the activities that affect measurements. A comparison of calculated and “measured” R-values for known walls indicates a measurement “calibration” of within 10% for the equipment and analysis.
thermal insulation, heat flux transducers, field survey, in situ, measurement, New Zealand, houses
Research fellow, Building Research Association of New Zealand, Porirua,