The Mobile Infiltration Test Unit - Its design and capabilities: Preliminary experimental results.

Describes the Mobile Infiltration Test Unit (MITU) and its instrumentation, including some preliminary tests of the individual measurement systems. MITU has a completely automated data acquisition system that records air infiltration rates, surface pressures and weather as half hour averages. Theshell of the tracker is well sealed and the quantity ,type and distribution of leakage area is controlled using removable leakage panels in 16 window openings. Using the trailer's fan pressurization system finds the leakage area of the shell to be 12 cm2, while the 2 types of leakage panels have leakage areas of 13 cm2 and 17 cm2. Tests the infiltration measurement system by inducing a known flow rate with the fan pressurization system and predicts the flow rates to within 10% in all cases.