Answer / p.kithan

For calculating the discharge pressure in case of
centrifugal pump this formula can be used,
H=(Q * $* g )/ (# * P )
H=Head (m)
Q=flow rate(m3/sec)
$=Density(kg/m3)
#=Efficiency
g=accleration due gravity(m/sec2)
P=power consumption(kW)
now, Discharge pressure=Head * Density of the fluid
Discharge pressure in kg/cm2(By conversion from m to
cm)

Answer / engrtauseef

pressure= head X density of fluid

P= H X density

CHEMICAL FLUID MECHANIC - EXAMPLE 3.1 : Water flows through a pipe with circular cross sectional area at the rate of V / t = 80 L / s where V is the volume and t is time. Let Av = 80 L / s where A is cross sectional area and v is velocity of fluid. For point 1, the radius of the pipe is 16 cm. For point 2, the radius of the pipe is 8 cm. Find (a) the velocity at point 1; (b) the velocity at point 2; (c) the pressure at point 2 by using Bernoulli's equation where P + Rgy + 0.5 RV = constant. P is the pressure, R = density of fluid, V = square of fluid's velocity, g = gravitational constant of 9.81 N / kg and y = 2 m = difference of height at 2 points. The pressure of point 1 is 180 kPa.

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