7.1.5 |
Airflow Rates Vs Back pressure
Airflow testing of 20 metres of Leeaky Hose at a depth of 1 metre
demonstrated its ability to cope with and supply from 20 cu. Ft./per hour/ to
300 cub.ft. per hour.
At the higher rates this delivered 33 cu. Metres per hour per metre length of
LH.
As the length of the runs increase the tyranny of the Reynolds Number in
relation to turbulence will come into play.
Back Pressure. On start-up there is significant back pressure as the air drives
water from the hose. The answer to this is to start-up gradually and take 3-4
minutes to lift your flow rates to the desired level.
At Dondingalong Crayfish Farm 3 x 800 m 2 ponds are being aerated from one
small pump - doubling stocking levels.
|
