Abstract:
Blower is a device used to increase or increase the pressure of air or gas that will
be flowed in a particular room as well as suctioning certain air or gas where the
Blower produces a relatively high pressure ratio with a greater volume of gas
flow. At present the role of the Blower has begun to be widely used, especially in
the engineering field, where the Blower role was created to facilitate the process
of air exhaust. The blower itself is a producer of air movement which is generally
used for ventilation. Blowers consist of several types, namely Axial Blowers and
Centrifugal Blowers. Blowers have one component, namely Impeller. To
determine the right diameter of the impeller, a performance test on centrifugal
blowers with different variations in the size of the impeller diameter is needed,
such as an anemometer, wattmeter and tachometer, and the impeller diameters
are 180 mm, 190 mm and 200 mm with a rotational speed of 1500 rpm. The
results obtained from testing on the diameter of the 200 mm impeller obtained the
highest efficiency with a value of 0.0086%. The maximum air velocity is found in
the diameter of the impeller with a size of 200 mm which is equal to 19.82 km / h.
Then, the maximum pressure drop (∆p) is found at the diameter of the impeller
with a size of 200 mm and 190 mm with the same result which is 136,206954 Pa.
Then followed by the largest capacity value (Q) found in the variation of the
diameter of the impeller with a size of 200 mm that is equal to 118.92 m3 / h. And
the largest motor power is found in variations in the diameter of the impeller with
a size of 200 mm that is equal to 62.85 W.
