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

Recrystallization, what is the relationship between the rate of cooling and...

what is the relationship between the rate of cooling and the size of crystals?

Lithium aluminum hydride, Lithium aluminum hydride Lithium aluminum hy...

Lithium aluminum hydride Lithium aluminum hydride reduces the carbonyl group to an alcohol.

Alkaline earths, GROUP 2: ALKALINE EARTHS   The elements known common...

GROUP 2: ALKALINE EARTHS   The elements known commonly as alkaline earths have atoms with the (ns) 2 design and almost always have the +2 oxidation state in their compound

Jamie, why does Jamie hooper like men?

why does Jamie hooper like men?

Nodes, 3p orbitals has how many nodes

3p orbitals has how many nodes

Explain the purity tests of sesame oil, Q. Explain the Purity Tests of sesa...

Q. Explain the Purity Tests of sesame oil? Purity tests for oils/fats would include analyzing the samples for the presence of sesame oil, cottonseed oil, linseed oil, argemone

Bohr''s model, which is the main postulate of bohr''s model of atom

which is the main postulate of bohr''s model of atom

How to define fast reactions, Fast reactions are those reactions that occur...

Fast reactions are those reactions that occur instantaneously. A fast reaction depends upon the reaction rates. These reactions are so fast that they occur as soon as the reactants

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