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

Limitations of hybrid orbitals, Q. Limitations of Hybrid orbitals? ...

Q. Limitations of Hybrid orbitals? It gives no idea whether a particular metal ion would prefer to have any particular geometry say, an octahedral or tetrahedral with a giv

Sodium atom the number of electrons, For sodium atom the number of electron...

For sodium atom the number of electrons with m=0 will be: (1) 2        (2) 27      (3) 9          (4) 8 Ans: 7

New products and ingredients-product devlopment, Normal 0 false...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

12.23, sodium 4-oxo-2-pentenoate

sodium 4-oxo-2-pentenoate

Separation methods, Separation methods: The present unit gives an intr...

Separation methods: The present unit gives an introduction to the course on separation methods. It highlights the utility of separations within the analysis and recovery of pu

Chemical kinetics, Distinguish between van''t Hoff Method and Oswald Isolat...

Distinguish between van''t Hoff Method and Oswald Isolation Method. In each case give an expression for the rate of reaction.

Titration Lab, How do i figure out number of protons available for reaction...

How do i figure out number of protons available for reaction with OH- in a oxalic acid+NaOH reaction?

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