| 释义 |
Duct blaster Duct blasterCalibrated air-flow measurement system developed to test the air-tightness of forced-air duct systems. All outlets for the duct system, except for the one attached to the duct blaster, are sealed off, and the system is either pressurized or depressurized; the work needed by the fan to maintain a given pressure difference provides a measure of duct leakage. |