|Apr10-12, 07:02 PM||#1|
static pressure and airflow at reduced fan speeds
This is probably a stupid question but I've been going around in circles for a while now and have gotten myself completely confused.
I have a fan and a pump, with performance charts (static pressure vs. air flow) for both. I need to try and determine flow rates for each device when run at reduced speeds.
The fan/pump will be pulling a gas flow through a small tube, and exhausting to atmosphere. I know that's not the right way to use a fan, but that's what I'm stuck with right now. I can measure the pressure at the fan/pump inlet while running at different voltages.
Searching around the internet, I found that air flow is linearly proportional to fan speed and static pressure is proportional to fan speed squared.
So I'm guessing that if I'm at half the fan speed I should be at a quarter (.52) of the static pressure. I can measure the pressure, multiply by 4 and look it up on the chart. Then take the corresponding air flow and knock it in half to get the actual flow rate.
That's a complete guess. If anyone can steer me in the right direction, I would appreciate it because I'm really stuck here. Thanks for your help.
|air flow, fan, speed, static pressure|
|Similar Threads for: static pressure and airflow at reduced fan speeds|
|How does dynamic pressure affect static pressure?||General Physics||3|
|Bernoulli's Eq/Static Pressure/Stagnation Pressure question||Mechanical Engineering||0|
|[Thermo] Derivation of compressibility factor vs reduced pressure||Engineering, Comp Sci, & Technology Homework||2|
|Confused with static pressure and total pressure and Bernoulli's eq!||Aerospace Engineering||1|
|Airflow/Pressure relationship||Mechanical Engineering||8|