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It is desired to concentrate a NaOH solution from 12.5 % to 40% in a double effect evaporator. 50,000 lb/hr of feed solution enters the evaporator at 120 oF, and steam at 15 psig is available for effecting the concentration. Vacuum in the 2nd effect is held at 24in. Hg, and water from a cooling tower is available at 85 oF. Estimate
(a) quantity of feed and water needs for the forward feed operation,
(b) quantity of feed and condenser water need for the backward feed operation,
(c) Surface need for the operation in (a), suppose U is 400 and 250 Btu/hr(ft2) (oF) for the first and second effect respectively. UD equal to 450 and 350 in two effects correspondingly.
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BURGER VECTOR The Burgers vector, often denoted by b, is a vector that shows the magnitude and direction of the lattice distortion of dislocation in a crystal lattice. The dire
Salient properties of common semiconducting materials. The salient properties of semi-conducting materials are: These are the materials whose valence electrons are bound
1. Consider the previous heat exchanger. Tune a proportional controller for a) GM = 2; PM = 45 degrees and c) MPH (maximum peak height) occurs at 2 dB (provides a z of ~ 0.4).
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Materials for AC applications These applications generally needs low coercivity Hc and low power loss, high permeability µ, high saturation magnetization. The low value of
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First find out the requirement of alcohol for your lab in consultation with the teacher or from records of previous years. Then fill-up F-22 form or simply write an application for
PROCESSING OF BILL FOR PAYMENT : Your Counsellor will give you one bill. In that bill, you make relevant entries of the following statement using your imagination.
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