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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.
What are its applications? (i) Direct extrusion: The billet is placed in a container and forced by the die through a piston. (ii) Indirect extrusion: The extruded part
Formulas for determining temporary and permanent hardness
heat exchanger would be difficult to model
Significant class of magnetic materials The most significant class of magnetic materials is the Ferro magnets: iron, nickel, cobalt and manganese, or their compounds (and a
given the displacement vectors A(3^i-4^j+4^k)m and B(2^i+3^j-7k)m,find the magnitudes of the vectors (a)C=A+B and (b)D=2A-B,also expressing each in terms of its rectangular compone
advantages of fuel cell over batteries
Question : Give a basic introduction on PHYSIOLOGICAL PHARMACOKINETICS ? Answer: The history and bases of physiological pharmacokinetics will be briefly reviewed, pointing out
Defines the process battery limits for a plant to produce 500,000 tonnes per year of bioethanol. You should produce a process flow diagram of the plant and obtain literature capita
THRMODYNAMICS
calogen conditioning?
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