| 摘要 |
<p>An air-handling system (preferably a variable air volume system) includes an inflatable air duct with a discharge member whose discharge opening varies with the static pressure or flow rate within the duct. To prevent the duct from deflating at low airflow rates, the discharge opening, in some embodiments, tends to close in. response to reduced air pressure associated with the lower airflow. The closing of the discharge opening prevents the static pressure from decreasing as much as the pressure would otherwise if the discharge opening were fixed. In some embodiments, the discharge opening responds to static pressure or airflow within the duct such that the discharge member redirects the discharge air as a function of the static pressure of flow volume. Warmer air at relatively low volume, for instance, can be directed downward, and cooler air at greater airflow rates can be directed upward.</p> |
