** Test tubes 3 an isolation to determine the wind speed at the exit on both sides by the Blower is plugged into Inverter-controlled adjustable speed at 50 Hz – 10.
There are 2 types of trial.
** 3 test tubes separate the Winds. On both sides The adoption of the Blower Inverter can be controlled with variable speed at 10 - 50 Hz
with two series of experiments.
* * test tube splits 3. To determine the speed of wind, out on both sides by the connected with Blower control Inverter can adjust speed in 10 - 50 Hz
experiments are 2 A