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

The set of quantum numbers not applicable an electron atom, The set of quan...

The set of quantum numbers not applicable for an electron in an atom is: (1) n= 1, l=1, m 1 = 1, m s = +1/2       (2) n= 1, l=0, m 1 = 0, m s = +1/2       (3) n= 1, l=0 m

Conductometric titration, how to write a good lab report on conductometri t...

how to write a good lab report on conductometri titration?

Show the diffrent kind of matter, Q. Show the diffrent kind of matter? ...

Q. Show the diffrent kind of matter? Liquid matter has a specific volume like a solid but flows and takes the shape of its container. A liquid is incompressible for the reaso

Difference between oraganic and inoraganic compounds, An organic compound i...

An organic compound is any member of a large class of chemical compounds which molecules have carbon and hydrogen; thus, carbides, carbonates, carbon oxides and elementary carbon

Name the products of hydrolysis of sucrose, Name the products of hydrolysis...

Name the products of hydrolysis of sucrose. Why is sucrose not a reducing sugar?   What are essential and non -  essential amino acids in human  food?  Give one example of each ty

Light waves, uses of light waves in chemical areas

uses of light waves in chemical areas

EBT, WHAT IS EBT

WHAT IS EBT

Detect the presence of synthetic food colours, Q. Detect the presence of sy...

Q. Detect the presence of synthetic food colours in the given samples? Objectives After conducting this activity, you will be able to: • describe the kind of natural

The equivalent masss of the metal is?, 1 gm of a metallic oxide on reductio...

1 gm of a metallic oxide on reduction gives 0.68 gm of the metal. ans) Mass of metal/mass of oxygen=eq. mass of metal/eq. mass of oxygen. applying this we get .68/.32=x/8 x=1

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