Agitator curves. 02076 *N*T/ 110000 = 2 *3.
Agitator curves " See full list on myengineeringtools. Below are the inputs required and my considerations: Inner dia of reactor: 1. These impellers feature curved blades that are angled away from the direction of rotation, creating a unique flow pattern that combines both axial and radial flow components. Agitator Power. 5 [as per agitator curves] Power = Np x ⍴ x N^3 x d^5 = 0. To overcome this problem we are going to redesign whole agitator gearbox assembly. A propeller agitator is shaped with blades tapering towards the shaft to minimize centrifugal force and produce maximum axial flow. ρ. Now after Calculating the Reynolds number, we can get the Power Number from the Agitator Curves, as follows, Below you will find documented performance curve information for Vaughan horizontal, vertical, pedestal and submersible chopper pumps. 4(a) and (b) respectively. These include: Impeller: The heart of the agitator, responsible for generating fluid motion. That's it. 3769 :: {m3/min}{1/m3} Tank Turnover Rate = 1. 336065 HP AGITATOR SELECTION • Depends on the viscosity of the liquid • For specific time of mixing, the best mixer is the one that mixes in the required time with the Agitator impellers can be classified based on the flow pattern they produce. Np value depends upon the agitator, and the Nq value depends upon both reynolds number and agitator, and while calculating the power per volume, we need to consider the respective cases, for small scale, p/v calculation involves the small scale batch volume and same the case of scale up too, the intensity of agitation depends upon the bulk velocity as the velocity increases the scale of How to calculate agitator power requirement using excel template. The Bravo 500 is extremely wear-resistant thanks to the use of Hard-ironTM and the low shaft speed. Velocity gradient curves (G, per s) versus agitator paddle speed (rpm) are provided by the manufacturer (Fig . The curves result in a vigorous motion of the fluids to be agitated. Following Equation shows the standard relations in geometry of type and location of impeller, proportions of May 5, 2016 · Coming to your question, Impeller is nothing but an agitator, and for example if an retreat curve is having two agitators then it is said to have 2 impellers. Here we considering the tank is fill up full of tank having slurry density 2. The equivalent circuit diagram of a motor with a single and a double cage rotor is illustrated in Figure 2. Here we will discuss the design of agitator vessel based on practical data inputs as given below: Mechanical Agitator Power Requirements for Liquid Batches can be determined from the energy balance equation and empirical correlations. Template name: Calculation of agitator power Template number: HCPE-MMP-0030 Purpose: This template calculates the power requirement for agitators Apr 26, 2020 · Power number = 0. These PDF's contain detailed information, but please consult Vaughan Company or your Vaughan representative to assist with your final pump selection. Torque produced at output shaft of gearbox: Tank Turnover Rate = Pumping capacity/ Tank capacity P= Tank Turnover Rate = 766. Agitators with retreat curve impellers are a type of agitator designed for efficient mixing processes and effective power usage. Agitators with Retreat Curve Impellers. 5 [As per generic agitator curves], Power req. A simplified brief description has been tabulated below. 5 Retreat Curve Imp The anchor agitator is simple and consists of a shaft and an anchor type propeller and can be mounted centrally or at an angle. rho - Density, myu - Viscosity. N 3. Figure 1 represents a typical industrial system used for mixing a batch liquid (Figures are located at the end of the Course Content example). 40 gm/cc 3. If aeration and the agitator speed are increased, the volume of air behind each blade becomes larger, and smaller bubbles trail off into the liquid from the mass of air behind each blade Below are the common power numbers & flow numbers of agitators: Agitator Type Power no. for agitation = Np x density x Impeller Dia^5 x RPS^3 = 8. When the agitator is rotated at very slow speed, the large bubbles will accumulate behind the turbine blades and small bubbles will trail off into the liquid. The reactor diameter is 50m, height is 80m, and liquid level is 70m, giving a total volume of 2. The six flat paddles are all driven by a single variable speed motor from 0 to 300 rpm. Based on a liquid density of 1200 kg/m3, viscosity of 50 CP, and required rotation of 200 RPM, the calculations determine a required horsepower of 1. 5 Kg/m-sec Permissible Stress of SS 316, Fs : 550 kg/cm2, Helical Agitators : These agitators have blades with a twisted mechanism, just like the threads of a screw. These flow patterns are axial, radial, and tangential flows. The document provides specifications for a cylindrical reactor including its diameter, height, liquid level, volume, agitator type and properties, and calculations for parameters like Reynolds number, power requirement, mixing intensity, volumetric flow rate, and number of agitators required. Type of fluid and its physical state, the degree of agitation and geometry of vessel are key factors in the design and selection of agitator components. Agitators are composed of several main components that work together to ensure efficient mixing. 84 watts = 10. 30 gm/cc to 2. May 2, 2016 · From this Agitator Speed, calculate the Reynold's Number, Nre = D x D x N x rho / myu. Let me explain you we need to get the power numbers based on the agitator curves by plotting the Reynolds number. This web application calculates agitator speed and power requirement for a given reactor geometry and mixture properties. Flow no. Propeller agitators are popular for simple mixing jobs. Hence, for getting the Power number ( Np ), we need to calculate the Reynolds number( R ) first. Now after Calculating the Reynolds number, we can get the Power Number from the Agitator Curves, as follows, Oct 31, 2021 · agitator motor power 선정에 관한 기준 이 rpm으로부터 레이놀즈 수를 계산한 후 agitator curve로부터 power number를 얻는다. Helical agitators are most useful for mixing viscous liquids. 1 Agitator Geometry 1 1) The main parts can be considered to design the agitator. N = agitator speed (r/s) ρ = liquid density (kg/m3) If the power number of an agitator is known, it is then possible to calculate the shaft power as : P = Np. 6 0. And if someone asks me the power number i will mention it as 50 or 60, because power number is not fixed and its an variable. 02076 *N*T/ 110000 = 2 *3. 54 HP, Considering losses which might occur due to transmission, gland losses, coupling losses, they would attribute to ~ 25% , the efficiency would reduce to 75 % , agitator agitates Iron ore Slurry density in the range of 2. It specifies the materials used, liquid properties, required rotation speed, power number, and calculations to determine the required horsepower, shaft diameter, and sweep diameter. Equipped with an agitator to enhance the 'up-stirring' capabilities it is a superior quality pump for all kinds of slurry applications. 6 m, Agitator Speed: 60, Motor RPM, Mr : 1475, Reaction mass density : 1500 Kg/m3, Reaction mass viscosity : 1. 97544/ 751. Jan 3, 2019 · From this Agitator Speed, calculate the Reynold's Number, Nre = D x D x N x rho / myu. Anchor 0. Now the question is to find out what is the power number for a particular agitator. 14* 24 *T / 60 times/min T = 43789. This document summarizes the design of an agitator. To draw the speed–torque curve for such The power requirement is based on a relationship of the agitator type, agitator speed, and liquid physical properties. The types of agitators are paddle agitators, anchor agitators, helical ribbon agitators, propeller agitators, turbine agitators, agitators with screw impellers, retreat curve impellers, hydrofoil impellers Power number = 2. 40 gm/cc. 2. Slurry density is major property to generate to high torque on agitator. 011 HP, Transmission losses = 20%, Feb 15, 2000 · agitator performance and optimize the geometrical parameters to be used for manufacturing the differential agitator. Following the Application Equation derivation, correlations are presented from the open literature which define the methodology for calculating the power requirements for various agitator types. Delete torque curve can be achieved to take any desired shape by suitably choosing the resistances of the two cages, the width of the slot opening and the depth of the inner cage. 5 x 1500 x (60/60)^3 x (1. 8 The EKATO development INTERMIG is a predominantly axial-pumping impeller that comprises several stages arranged on top of one another and each staggered by 90° angles. 8089 N-m Calculation of Theoretical Torque Rating of Gear Box: 4. Also available in Explosion Proof version. 82 m, Sweep dia / Agitator dia : 1. The impeller’s design and size determine the type and efficiency of mixing. D 5. com Apr 27, 2020 · Let's try our case with a 5 KL SS reactor with Anchor agitator. Apr 19, 2008 · Agitator speed is then determined using relation Nq = Q/ND 3, where N is the Agitator speed. 6^5) = 7862. CONCLUSION: Agitator Shaft Power: As Oct 26, 2024 · Parts of an Agitator. 24 W = 0. It is mainly used in reactors. Reynolds number is calculated using relation, Re = D 2 Nρ/μ and a new Pumping number is determined using generic agitator curves. zktaf svanr hqxozsb btx nilgr qmvh thbbc quxx oihces vhirsutlo