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A single-effect evaporator is used to concentrate 60000 kg h-1 of a 40 wt % NaOH solution which is fed to the evaporator at 40°C. The concentrated liquid is a 55 wt % NaOH solution. Saturated steam at 3 atm is available for heating. The vapor space in the evaporator is at a pressure of 10 kPa. The overall heat transfer coefficient is 2000 W m-2 K-1. Determine:
a) The amount of vapor produced.
b) The area required for the evaporator. Include clearly values of relevant properties.
c) The economy.
Zinc has hcp structure. In a unit cell of zinc, the zinc atoms occupy 74% of volume of unit cell.
Thermal spelling: The breaking or cracking or peeling off the refractory is known as spelling. A good refractory must show a good resistance to thermal spelling. Thermal spelling
Linear Alkyl benzene (LAB) is produced by the alkylation of benzene with olefins (assuming all dodecane). Raw maw materials: Kerosene and benzene. The chemical plant design comp
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What is Metallisation Metallisation : metalizing is the procedure of evaporating a film of metal onto products. Normally the same is done in vacuum, therefore called vacuum m
Q. Define flash and fire points and its determination. OR Write short note on: Flash and fire points. Ans. Flash and fire points:
advantages of fuel cell over batteries
#question.Q1 What is wrong with each of the following attempts to write an electron configuration? Justify your answer with suitable explanation. (a) 1s22s3 (b) 1s22s22p23s2 (c) 1s
performance equation
fing the neceessary and sufficient conditions for the numbers s and t to make the LP problem maximise z=x+y subject to:sx+ty x;y>0 have an optimal solution be feasible b
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