heat transfer, Chemistry

Assignment Help:
54) Note: This problem is worth double credit.It is desired to concentrate a caustic soda solution from 12.5 to 40.0% in a double-effect evaporator. Feed solution at a flow rate of 50,000 lb/h enters the evaporator at 120?F, and steam at 15 psig is available to concentrate this solution. Pressure in the vapor space of the second effect is kept at 5.92 in Hg absolute (24 in Hg vacuum), and water at 85?F from a cooling tower is available to condense the vapor from the second effect. For backward feed operation, calculate the
(a) steam flow rate required.
(b) steam economy.
(c) area per evaporator effect.
(d) cooling water flow rate required, assuming the water should be returned to the cooling tower no hotter than 125?F.
The overall heat transfer coefficients for the two effects are 350 and 450 Btu/h•ft2•?F, respectively.Answers:(a)21,400 lb/h(b)1.61(c)1960 ft2(d) 421,000 lb/h

Related Discussions:- heat transfer

Oxidation & reduction, theory of oxidation & reduction titration with examp...

theory of oxidation & reduction titration with examples

Define matrix of the mitochondrion., Write down the complete names and the ...

Write down the complete names and the commonly used abbreviations of the molecules A and B. a) Illustrate the line bond structures of the reactive moieties of these molecules i

Heterolysis bond fission or heterolytic, Heterolysis bond fission or Hetero...

Heterolysis bond fission or Heterolytic (i) In heterolysis bond, the covalent bond is broken in such a way that one species (that is., less electronegative) is deprived of its

The sum of the orbital energies , Why is the total energy of a many-electro...

Why is the total energy of a many-electron atom not equivalent to the sum of the orbital energies for every electron?

Kohlrausch''s law, I have to prepare an assignment on Kohlrausch''s law .So...

I have to prepare an assignment on Kohlrausch''s law .So what topics should I include under this topic for an effective assignment ??????

Sis2 structure, what would be the structure of SiS2 edge sharing linking po...

what would be the structure of SiS2 edge sharing linking polyhedra?

To study the presence of aroma taste, to study the presence of aroma taste,...

to study the presence of aroma taste,ph value and tannic acid of diffrent tea leaves

Symmetry operations, what are the symmetry operations of N2O5 and C2H2

what are the symmetry operations of N2O5 and C2H2

Periodic table, How do we extract group one alkali metals?

How do we extract group one alkali metals?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd