Calculates agitator speed and power requirement for a given reactor geometry and mixture properties. Scale of Agitation 1 is quite mild, 3 is normal, 6 is vigorous and 10 is violent. Characteristic of application requiring minimum fluid velocities to produce a flat but moving fluid batch surface
[email protected]Mechanical Agitator Power Requirements for Liquid Batches _____ Course Content Mechanical Agitator Power Requirements for Liquid Batches can be determined from the energy balance equation and empirical correlations. Figure 1 represents a typical industrial system used for mixing a batch liquid (Figures are located at the end of the Course
May 12, 2011 Download Agitator Power Requirement and Mixing Intensity Calculator. Agitator Power Requirement and Mixing Intensity Calculator. Use this MS Excel spreadsheet to calculation the power requirements and mixing intensity for a defined mixing application. Disclaimer: All software provided As-Is with no warranty, expressed or implied, available
designing a Agitator or Mixer. This Book explains Mechanical Design Process of Agitator with example of Designing a agitator,Flow patterns in agitator, Geometrical Relations for various types of agitator Impeller,Selection of agitator on the basis of Viscosity of fluids,Power Curves for Various Impeller for Calculation of Power
POWER CONSUMPTION OF AGITATORS @ (Flow number) 1 tan 3 3 a Q a a a nD q N q nD q K D n k D W v S E S It is a function of the volumetric flow rate and the kinetic energy Values of N Q HE-3 high-efficiency impeller 0.47 Disk turbine 1.3 Four-blade 45q turbine (W/D 0.87 a)=1/6 Marine propellers (square pitch) 0.5 N Q Impeller (Power number) 2 2 2
May 13, 2019 Accordingly, this agitator will have much larger components such as gearbox and shafting, and will provide a greater degree of agitation. For More Information on Mixing Impeller Power. For more information about mixing impeller power, email
c. Types of flow in mixing vessel d. Selection of Agitators e. Energy utilization in Different types of agitators By: Dr.P.A.Joshi, DDU, Nadiad 2. Agitator Design …..31 a. Introduction to Mixing Process Evaluation b. Calculation of Power requirement for Newtonian fluid c. Introduction to non-Newtonian fluid and power requirement for non
Jan 03, 2019 And coming to Motor capacity, we have to consider approx. 30% excess to the required capacity, so the motor capacity will be 8.6 * 1.3 = 11.18 KW ~11.5 KW = 15.4 HP. ~16 HP. Usually a motor will have an RPM of ~1475, so to match the anchor RPM to 48, Gear box should have an ratio of 1475 / 48 = 30.75
Data Lookup and Calculations Fluid Mixing purpose Degree of agitation Fluid density Fluid viscosity mu kg/m-s Reynolds number Pumping number Pumping capacity Power ft-lbf/s Power number - lower impeller Power number - upper impeller Total power (assume additive) Q NQ Mixing zone calculation, Np^(1/3) * Nre Mixing zone Mixing time, 95%
mixers is unique for chemical process equipment. Mechanical design does not end with the shaft, since strength and practical issues remain for the impeller. Another part of mixer design is the tank in which the mixer is used, since tank dimensions inﬂuence mixer features, especially shaft length. Conversely, a
the same Power number as a vertical cylindrical tank. SCALE-UP OF MIXING SYSTEMS The calculation of power requirements for agitation is only a part of the mixer design. In any mixing problem, there are several defined objectives such as the time required for blending two immiscible liquids, rates of heat transfer from a heated jacket per unit
The quality of mixing depends on the effective energy input by unit mass or unit volume of fluid. It has been found, for example, that the rate of oxygen transfer in aerated fermentors equipped with turbine mixers is nearly proportional to the net mixing power input per unit volume of broth (Hixson and Gaden, 1950).The relationship between mixing power and the type, dimensions and operation
Calculate the G factor from the flow through the diffuser G = V xP 550 With: P = power (hp) being dissipated in the mixing zone = absolute viscosity (lb-sec/ft2) and equals 2.735 x 10-5 at 50 F and 2.05 x 10-5 at 70 F V = Volume of mixing zone (ft3) P = The power being dissipated in the mixing zone (hp) = x xeff Qph 60 550 With:
Step 3: Calculate the Base-to-Acid Ratio. The next step is to document the environment to which the refractory material was exposed. One way to do this is by calculating the base-to-acid ratio (b/a), using values taken from the information received from the chemical analysis test mentioned in Step 2
Mixing and Blending liquids, solids and gases into water and wastewater Agenda for todays seminar • Application of Power to Fluids – Formulae • Energygy pp Considerations & Applications • Illustrations & Devices used for Blending • Static Mixers and their applications • Mixing with Compressed Air or Liquid • Mechanical Agitator Design
Apr 01, 2011 Step 3: Calculate the Base-to-Acid Ratio. The next step is to document the environment that the refractory material was exposed to. One way to
Aug 24, 2015 AFD7 Block Overview • Section 1: Agitation and Mixing Theory – Agitation vs. Mixing – Overview of Equipment • Section 2: Design of Mixing Equipment – Power Number – Power Requirement • Section 3: Static Mixers – Basic Principle • Section 4: Software Modeling www.ChemicalEngineeringGuy.com 7
Aug 04, 2005 Equal power per volume involves a similar calculation, except the geometry ratio is raised to the two-thirds power: N 2 = N 1 (D 1 /D 2 ) (2/3) This expression for power per volume only applies strictly for turbulent conditions, where the power number is constant, but is approximately correct for transition-flow mixing
suspension, the agitator must provide a power input to the liquid that counteracts this settling power. The agitator power always amounts to a multiple of the settling power. When one is using the above Equations (1) and (2), the choice of particle size that is used to calculate the free-settling velocity, v
Experimental and Theoretical Investigation of Mixing in a Bottom Gas-Stirred Ladle Jun Aoki, Brian G. Thomas ... Heat 1 was the twenty-first heat of the ladle refractory campaign and the sixth heat on the alumina porous ... power was off and the electrodes were raised during the entire experiment, eliminating the potential for carbon pick-up
The gasifier is a pressure vessel with a refractory lining that operates at temperatures in the range 1250–1450 C and pressures of 3 MPa for power generation and up to 6–8 MPa for H 2 and chemical synthesis. The feedstocks, oxygen, and steam are introduced through burners at the top of the gasifier
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