Pro/Forums - View Single Post - Estimating airflow through a ducted fan/heatsink

UNDERBYTE · 10-24-2002, 01:12 AM

Hotwire anenometer-measure the velocity of the exit air(on a grid and average the result), calc the exit area and you have enough info to to calculate flow through the sink

or

Build your own test chamber -AMCA calibrated nozzles can be bought for a few hundred dollars

some plywoood or plexiglass and and a counter blower. total cost about $1000 USD

many fan co. build thier own

Measuring airflow is not going to tell you much of anything useful unless you are doing development. your constant should be @ equal noise values vs performance. Puts every thing on a level playing field....

10-24-2002, 01:12 AM	#12
UNDERBYTE Cooling Neophyte Join Date: Oct 2002 Location: CENTRX Posts: 75	Hotwire anenometer-measure the velocity of the exit air(on a grid and average the result), calc the exit area and you have enough info to to calculate flow through the sink or Build your own test chamber -AMCA calibrated nozzles can be bought for a few hundred dollars some plywoood or plexiglass and and a counter blower. total cost about $1000 USD many fan co. build thier own Measuring airflow is not going to tell you much of anything useful unless you are doing development. your constant should be @ equal noise values vs performance. Puts every thing on a level playing field....