QUOTE(frequency @ Oct 9 2015, 10:18 AM)
Hi guys,
I have my kitchen setup as the drawing
it is about 4 ft straight then 90 degree bend and 9 ft straight to end.
My current hood is low end model, electrolux EFC9533X that dual purpose ducting or recirculation mode with 1000m3 horse power only.
It is really weak~
Any idea should I get the in line duct booster fan or exhaust fan (with filter) like kdk?
really appreciate lots
[attachmentid=5091946]
KDK is not enough to ensure air quality. You already invested in the hood. Seems like a waste if you don't allow it to do its job properly. 1000m3/hr extraction rate is pretty good but air extraction depends on a number of other factors.
Maximum length before you loose efficiency is 5m, minus 1m for every 90 degree bend. Your run adds up to 13 ft, which is almost 4m, including the single bend. Perfect. But that's only one part of the equation.
Calculate the CFM of your hood against the extraction rate required for your kitchen size.
- Volume of kitchen (length x width x height) eg. 4m x 3m x 2.5m = 30m3
- 10 changes of air per hour eg. 10 x 30m3 = 300m3 (note: the highest number I've seen recommended is 12 changes of air per hour and the lowest was 8 changes/hour).
P.s. Check the diameter of the ducting. It must be properly sized. Also, if you use flexible or ribbed ducting, this can contribute to noise as well. Another important thing is to note the BTU output of your stove if you use gas. And factor that into your considerations.
This post has been edited by OneMoreDay: Oct 10 2015, 12:24 AM