U Value Measurements in the Walls of Building C52.

摘要

The building, which has asbestos cement cladding, was selected as an example of an industrial building to assess the problems and test the effectiveness of insulating the cavity with blown mineral wool. 'U' value measurements were carried out on the north west wall of C52 before and after insulation. A thermal imaging system was used to select the position for the heat flux sensor and this report stresses the need for such a system with this type of measurement. The report gives details of improved techniques to those methods for measuring 'U' values and suggests that the minimum measurement period of 24 hours should be extended to three days. Using an Orion Delta logger it is shown that it is possible to measure 'U' values off-site without further analysis.