What is agitator power number?
Agitator Speed , N =Q / ( Nq x D x D x D ), From this Agitator Speed, calculate the Reynold’s Number, Nre = D x D x N x rho / myu. Power required ( P ) = Np x rho x N^3 x D^5. You will be getting Power P in KW.
Where is the power number on an agitator?
- Teq. = 2167.7 mm. Agitator Diameter (D) = 0.40 * Teq. D. = 867.1 mm.
- Vc. = 0.12 m/s. Pumping Rate (Q) = Vc.(Π .Teq2)/4. Q. = 0.45 m³/s.
- Agitator Speed (N) = 61.11 rpm. Reynolds Number. = 9189. Power Number is determined based on Reynolds number from generic agitator curves.
How do I find the impeller power number?
Power = Np * n3 * d5 * sg * K The value of the dimensionless power number (Np) depends on several factors including impeller design, number of impellers and location within a tank, tank baffling and fluid viscosity. Typically the power number is shown for mixing in fully turbulent flow.
How power number is calculated?
The powers of numbers are also called exponents. A number, X, to the power of 2 is also referred to as X squared. The number X to the power of 3 is called X cubed. Calculating an exponent is as simple as multiplying the base number by itself.
What is impeller power number?
Power Number is a dimensionless parameter based on the power in Watt consumed by the agitating rotor = impellers for the SUB and turbines for the SUF.
What is the symbol for to the power of?
Used to raise a number to the power of an exponent.
How do you calculate the RPM of an impeller?
To calculate tip speed you simply multiply the diameter of the impeller by pi (3.14159) which gives you the circumference of the impeller at the outermost tip. You then multiply by the rotational speed of the impeller (usually rpm, or rps) and this result is tip speed.
How do you find the power of large numbers?
Here is the algorithm for finding power of a number….Multiply(res, x)
- Initialize carry as 0.
- Do following for i=0 to res_size-1. …. a. Find prod = res[i]*x+carry. …. b. Store last digit of prod in res[i] and remaining digits in carry.
- Store all digits of carry in res and increase res_size by number of digits.
What are the types of agitators?
Types of Agitators
- Turbine Agitators.
- Paddle Agitators.
- Anchor Agitators.
- Propeller Agitators.
- Helical Agitators.
What’s the difference between impeller and agitator?
impellers? Washing machines with agitators use a central post that twists back and forth, rubbing against clothes to help break apart stains. In contrast, washing machines with impellers use a low-profile cone or disc that spins/rotates to rub clothes against each other to get them clean.
How to select motor capacity for agitator-Pharma?
Based on the Agitator, we need to consider the Flow number, find from below table. Nre = D x D x N x rho / myu. rho – Density, myu – Viscosity. From the estimated Power number ( Np ), We can Calculate the Power required. Power required ( P ) = Np x rho x N^3 x D^5. You will be getting Power P in KW. All Comments were Appreciated.
What kind of power does an agitator need?
Power required for agitation: Power depends on diameter of impeller, revolutions of agitator shaft, power number of impeller, number of impellers, density, content of solids and viscocity of liquid. Overhang of shaft and lower fixed bearing: The shaft is supported at the top end by bearing housing assembly.
What does the Reynolds number mean in agitator?
Power Number : This number signifies the effect of Power consumed over the agitation, in other basic words it is ratio of resistance force to inertial force, it is dimensionless. Reynolds Number : This number defines the fluid flow, so here it indicates the flow is whether laminar or turbulent.
How big is the volume of an agitator?
Units Base Case Scale up Volume V m 3 0.021 21.2 Vessel Diameter T mm 300.0 3000.0 Liquid Level Z mm 300.0 3000.0 Agitator Diameter D mm 120.0 1200.0