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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 the main sources of electrical resistance in a metal? The factors that affect the electrical resistance of a metal are impurity, temperature and alloying. The free mea
Give the properties and applications of Teflon. Teflon: This is acquired by the polymerisation of tetrafloourethylene. Properties: 1. This has good electrical, therma
design of condenser
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 o F, and steam at 15 psig
AskAs your final task (Key Assignment), you will choose a topic in health care (e.g. cardiovascular issues, obesity, or cancer) and analyze it. Then, integrate all of the steps and
ACTIVITY 1 INVESTIGATION OF THE STORE Investigate the store of any one of the laboratories in your study centre and write a report in approximately 500 words. Procedure
what are pseudo order reaction?with suitable example?
Explain the mechanism of ferromagnetism Ferromagnetism is the basic mechanism by which certain materials (like iron) form permanent magnets and/or exhibit tough interactions
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Consider a process for the partial oxidation of benzene to produce maleic anhydride (C4H4O4) using air. There are two reactions to be concerned with: The first partially oxidizes t
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