F = 2U ΣProblem 3A pilot-scale disc stack centrifuge is tested for recovery of bacteria. The centrifuge contains 25 discs with innerand outer diameters of 2 cm and 10 cm, respectively. The half-cone angle is 35. When operated at a speed of3000 rpm with a feed rate of 3.5 litres per min, 70% of the cells are recovered. If a bigger centrifuge is to beused for industrial treatment of 80 litres per min, what operating speed is required to achieve the samesedimentation performance if the larger centrifuge contains 55 discs with outer diameter 15 cm, inner diameter4.7 cm, and half-cone angle 45.HONORE2Πω2(Ν – 1)3gtanoQ₁ Q₂2-2>₁1₂|||(r³-ri)

Given Data: ns=25di,s=2 cmdo,s=10 cmθs=35oNs=3000 rpmQs=3.5 L/minQl=80 L/minnl=55do,l=15 cmdi,l=4.7…

Answered: A pilot-scale disc stack centrifuge is…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A compressor that has been in service for 20 years has finally broken down beyond repair, and now must be replaced. The old 180hp machine cost $1200 and its cost index at that time was 144.5. The new machine will be 400hp. How much will the new machine cost, given that today's compressor index is 252.4 and the power-sizing exponent for compressor sizing is 0.32? A: $929 B: $2706 C: $1434 D: $2096 E: $1549
bearing feed раper photocopier is controlled by two which for a 1244 The rollers are sprung force of together with approximately 20N. The rollers each consist of a 20 mm outer a Steel shaft diameter plastic cylinder Plastic cylinder pressed onto a 10 mm diameter steel shaft (see Figure 9.30). The maximum feed rate for the Figure 6.30 Copier rollers. copier is 30 pages per minute. Select bearings to support the rollers.
What will be the surface roughness x of the product due to the compressibility of the oil in the cylinder of the rectilinear hydraulic motor (PCH) of the copier if the pressing force fluctuates due to the unequal hardness of the material in the range Fmin = 720 N to Fmax = 865 N? The diameter of the PČH cylinder is d = 25 mm, the volume in the cylinder and the supply line is V0 = 55 cm3, the compressibility coefficient of the oil Bp = 4.58*10-10 Pa-1.
Use the principles of friction
33) A multiple disc clutch, steel on bronze, is to transmit 7 kW at 1000 rpm. The inner radius of thecontact is 50 mm and outer radius of the contact is 75 mm. The clutch operates in oil with an expected coefficient of "0.1". The average allowable pressure is 0.35 N/mm2. Determine the total number of steel and bronze discs.
Liquid capacity of a separator is 3250 bpd and the retention time is 120 seconds. Calculate the liquid volume.
Follow up: How would the steps of this problem change if θ was not 90°?
what process is this? how to perform this? Procedure in position?
6. A cylinder with a 7-cm bore and 2.5-cm rod receives fluid at 40 1/min. What is the velocity of the cylinder rod extending and returning? 7. If the cylinder in Problem 6 has a stroke of 40 cm, what is the maximum cycle rate that might be achieved?
Analyse, using the results, how each component failed and justify how each component’s design could be improved. Figure 1 The 220mm-long bolt was used to fasten one of the engine mount to a supporting structure. In an effort to prevent the bolt from coming loose, the torque-prevailing nut and split pin were utilized to tighten the bolt. The bolt held through an aluminum housing. Due to the reduced stiffness of the fastened parts, the bolt supported a greater proportion of the applied force. The bolt's size necessitated a high tightening torque of 660 Nm (487 Lbft). Since this level of torque could not be achieved with the tools at the time, this torque was not specified. The aluminum's maximum bearing pressure was far exceeded by the bearing stress under the nut's head and face. As a result, there was excessive preload loss due to creep. fan shaft First of all, the fan shaft was required to be made of cold-drawn 1040 or 1045 steel with a yield strength of 586 MPa and the expected…
Example 21.2 The torque developed by an engine is given by the following equation: T=14 250 +2200 sin 20-1800 cos 20 where Tis the torque in N-m and 0 is the crank angle from the inner dead centre position. The resisting torque of the machine is constant throughout the work cycle. 1The coefficient of speed fluctuations is 0.01. The engine speed is 150 rpm. A solid circular steel disk, 50 mm thick, is used as a flywhekl. The mass density of steel is 7800 kg m. Calculate the radius of the flywheel disk.
what is the answer on this problem number 105?

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