An outside look at heat, air and moisture transport in envelope parts.

Provoked to present a provocative paper on outside environmental conditions, a short discussion of relevant phenomena is offered. This paper reviews what we need to know about outdoor climate in order to solve HAM questions. In the Netherlands virtually all current meteorological parameters are measured at 5 stations; rain at 300, temperature and humidity at about 40. What do we want to do with it?



Air leakage of residential buildings. La permeabilite a l'air des batiments d'habitation.

Describes the instrumentation and measurement technique used by the CSTB to measure the leakiness of residential buildings. Results of the experiments are also presented.

Investigation of a tracer gas method to evaluate smoke leakage of door assemblies.

A pilot test series has been performed to study the possibility of using carbon dioxide produced by the burners of a test furnace as a tracer gas to measure the fire gas leakage of door assemblies. The experiments show that a test method based on tracer gas techniques can be developed avoiding thedrawbacks of the proposed ISO test method DP 5925 Part 3 based on the use of an enclosure. The investigated method works well for leakage measurements in ambient and medium temperature ranges. A special test door suitable for theoretical estimation of leakage rates was used in the test.

Field air leakage of newly installed residential windows.

Air leakage characteristics of 192 new windows installed in new residential construction representative of those units commonly installed in the Minneapolis/St. Paul Metropolitan Area have been measured and evaluated. The tested windows represented all major operation types, window material types and manufacturers represented in this market segment. The air leakage data obtained in the field were compared to industry and government standards and manufacturers reports for reference.