01 DETERMINING

COEFFICIENT OF DISCHARGE FOR VENTURIMETER, ORIFICEMETER item

The effective leakage area of Equation 2 can be converted to the

coefficient of discharge with Equation 3 (ASHRAE 2005):

Orifice metering relies on the Reynolds Law of Similarity to predict the meter's

coefficient of discharge and control its measurement accuracy (Figure 1).

Effect of Number and Thickness of Vortex breaker on the

coefficient of discharge in shaft spillway, National Conference of Water, Soil, Plant Science and Agricultural Machinery in IAU Dezful Branch.

7] investigated the

coefficient of discharge for a combined rectangular weir and semi-circular gate.

The filling patterns of various aluminum gating systems for sand casting recently were investigated by observing both water modeling and molten aluminum via a new video capturing technique, allowing each systems'

coefficient of discharge to be measured.

The

coefficient of discharge of the melt from the skull crucible in relation to the powder plasma arc is shown in Fig.

D]

Coefficient of Discharge d Diameter of Equivalent Orfice [d.

I]

coefficient of discharge in the section offered by the needle;

The

coefficient of discharge for well-designed, small nozzles varies from about 0.

3]) suggested that by increasing the radius of the bend R/d in shaft spillway, the

coefficient of discharge increases, while by increasing depth of submergence, the

coefficient of discharge is decreasing [3].

The advantage, however, is that the meter should have the correct

coefficient of discharge (Cd) with this methodology.