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

Ionic bonds are usually formed by combination of elements, Ionic bonds are ...

Ionic bonds are usually formed by combination of elements with: (1) High ionisation potential and low electron affinity (2) Low ionisation potential and high electron affini

Quantitative Analysis, A hydrocarbon z with molecular mass 78 on combustion...

A hydrocarbon z with molecular mass 78 on combustion gave 3.384g of carbon (IV) oxide and 0.693g of water. Determine the molecular formula of Z and draw its structure. [H=1, C=12,

Polarography, The diffusion current for a standard 1 x 10-4 M solution of h...

The diffusion current for a standard 1 x 10-4 M solution of hydroquinone is found to be 17.5 µA. An unknown solution of hydroquinone, when diluted tenfold and analysed under simila

In organic, why 4f electrons do not take part in bonding?

why 4f electrons do not take part in bonding?

How to calculate rate constant of first order reaction, find the rate const...

find the rate constant of first order reaction if 75% of reaction is completed in 6.03 sec

The de-broglie wavelength associated with material particle, The de-Broglie...

The de-Broglie wavelength associated with a material particle is: (1)  Directly proportional to its energy (2) Directly proportional to momentum (3) Inversely proportiona

Explain objectives of product development and evaluation, Explain Objective...

Explain Objectives of Product development and evaluationexplain why is it necessary to develop new products describe what are the factors responsible for development of

Cordination compounds, i want some 25 exampels of nomenculature of complex...

i want some 25 exampels of nomenculature of complex coordination compounds

Describe subatomic particles and the nuclear atom, Q. Describe Subatomic Pa...

Q. Describe Subatomic Particles and the Nuclear Atom? One of the most significant results of Dalton's theory was that it generally persuaded scientists that atoms exist. As a r

Hydrides.., How to write conclusion for this topic hydrides

How to write conclusion for this topic hydrides

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