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

Diagonal relationship, What is the diagonal relationship between Beryllium ...

What is the diagonal relationship between Beryllium and Aluminium

Electronegativity and bond type, Electronegativity may be described as the ...

Electronegativity may be described as the power of an atom to attract electrons to itself in a chemical bond. It is the most important chemical parameter in calculating the type of

Thermogravimatic analysis, what is thermogavimatic analysis and their instu...

what is thermogavimatic analysis and their instumental

Chemical, What is the use of bhc

What is the use of bhc

The total number of unpaired electrons & atoms of element, The total numbe...

The total number of unpaired electrons in d- orbital's of atoms of element of atomic number 29 is: (1) 10         (2) 1        (3) 0     (4)5 Ans:   0

Ions, Ask quAssuming that the ion formed has a noble gas configuration, wri...

Ask quAssuming that the ion formed has a noble gas configuration, write a chemical equation that shows the formation of an anion from a neutral selenium atom. estion #Minimum 100

Beneficiation of ores, Q. Beneficiation of Ores? Most of the ores avail...

Q. Beneficiation of Ores? Most of the ores available in nature contain large amounts of impurities, i.e. gangue. Direct extraction of metals from the ores by metallurgical proc

Selecting and numbering the principal chain, Selecting and Numbering the ...

Selecting and Numbering the principal chain Selecting the principal chain : choose the longest continuous chain of carbon atoms consisting of the principal functional

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