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

Organic compounds, give an assignment of organic compounds

give an assignment of organic compounds

The maximum number of electrons, The maximum number of electrons present in...

The maximum number of electrons present in an orbit l= 3 , is: (1) 6        (2) 8       (3) 10       (4) 14 Ans: 14

What is the methyle orange formula?, Methyl orange is a pH indicator often ...

Methyl orange is a pH indicator often used in titrations. It''s chemical formula  is C 14 H 14 N 3 NaO 3 S

What is nucleophile?, A nucleophile is a chemical species that donates an e...

A nucleophile is a chemical species that donates an electron pair to an electrophile to form a chemical bond in a reaction. All molecules or ions with a free pair of electrons or a

Optical glass, Optical glass: They contain phosphorous as replacement for ...

Optical glass: They contain phosphorous as replacement for most of all the silica and lead silicate, containing a little CaO 2 , the latter is capable of absorbing ultraviolet lig

Find the resulting moisture content, Question: a) Briefly compare the w...

Question: a) Briefly compare the windrow method v/s the aerated static pile composting b) Explain, with the help of a diagram, the role of aeration in turned windrow compos

Physical properties of acetone - aldehydes and ketones, Physical properties...

Physical properties of Acetone - Aldehydes and Ketones (a)  Acetone is a colourless liquid with characteristic pleasant odour. (b) Acetone is inflammable liquid. It boils at

Assignment, State 2nd law of thermodynamics in many forms as possible and s...

State 2nd law of thermodynamics in many forms as possible and show that they are identical in figures?

Explain the modelling for process and recipe, Explain Modelling for process...

Explain Modelling for process and recipe Generally, all problems that appear in food product design can be divided into mixture or process problems, with the latter having th

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