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The Northwest Residential Infiltration Survey (NORIS) was a field study conducted in the Pacific Northwest to determine air leakage rates and infiltration characteristics of electrically heated, single-family, detached residences. Air leakage rates were measured using fan pressurization (blower door) techniques. The results of the blower door tests were used to estimate the natural building air infiltration rates.
A detailed set of measurement protocols based on the ASTM Standard Method for Determining Air Leakage Rate by Fan Pressurization Test (E 779-87) was developed prior to implementing the field testing. The measurement protocols were tested on two residences during a training workshop by five independent blower door testing technicians. The objectives of this workshop were: (1) to instruct the technicians on the specifics of the NORIS protocols in order to develop consistency in measurement among the technicians; (2) to evaluate the ability of the technicians and their respective blower doors to measure the leakage area of an orifice plate; and (3) to compare the results of depressurization and pressurization tests.
This paper will review briefly the field protocols used during the full field measurement program and present a detailed comparison of the results of the blower door tests conducted during the workshop.
NORIS field study, ventilation, blower door testing, training workshop
Senior research scientist, Battelle, Pacific Northwest Laboratory, Richland, WA