Pneumatic Principles & Air Flow Mechanics Flashcards
7 cards from real CCT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Pneumatic Principles & Air Flow Mechanics flashcards as text
What does CFM stand for in Casper pneumatic tube system blower specifications?
Answer: Cubic Feet per Minute
CFM (Cubic Feet per Minute) is the standard unit for volumetric airflow rate and is a key specification when selecting or replacing blowers in pneumatic tube systems.
How does installation at high altitude affect Casper pneumatic tube system performance?
Answer: Reduced air density at altitude requires increased blower capacity to maintain performance
At higher altitudes, lower air density reduces the pressure differential a given blower can generate, requiring larger or faster blowers to compensate.
What is the function of an inlet air filter in a Casper pneumatic tube system?
Answer: To remove dust, debris, and particles from the airstream before they reach the blower
Inlet filters protect blowers and system components from contamination by trapping particulates in the airstream before they can cause mechanical wear or blockages.
In pneumatic tube system airflow analysis, what does 'static pressure' represent?
Answer: The resistance force that the blower must overcome to push air through the system
Static pressure is the resistance component of air pressure — it acts perpendicular to airflow and represents the system resistance the blower must overcome.
In a bidirectional Casper pneumatic tube system, how is carrier direction reversed?
Answer: Reversing valves redirect blower airflow so it draws from the opposite end of the tube
Reversing valves switch which end of the tube network the blower draws from, flipping the pressure gradient and driving carriers in the opposite direction.
What is the most likely effect of a significant air leak in a Casper pneumatic tube system?
Answer: The pressure differential decreases, causing slower or incomplete carrier transport
Air leaks allow pressure equalization, reducing the effective differential across carriers and resulting in insufficient driving force, slower speeds, or failed transfers.
What is 'velocity pressure' (dynamic pressure) in the context of pneumatic tube airflow?
Answer: The pressure component associated with the kinetic energy of moving air
Velocity pressure (dynamic pressure) represents the kinetic energy of the moving airstream and equals total pressure minus static pressure in the system.