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

Characterization of wastewater, a) Describe why not all of the organic matt...

a) Describe why not all of the organic matter in wastewater is converted to carbon dioxide and water in biological treatment. b) What is the importance of the BOD in the charact

P block, properties of halogens

properties of halogens

201, what is the name for the following compound,CH3-C=C-CH-CH=CH2

what is the name for the following compound,CH3-C=C-CH-CH=CH2

Explain the term acceptance tests, Acceptance tests What are Acceptanc...

Acceptance tests What are Acceptance Tests? Acceptance tests are used to evaluate product acceptability or liking or to determine which of a series of products is the most acc

Differential extraction of organic acids, What would happened if I put sodi...

What would happened if I put sodium hydroxide instead of sodium bicarbonate into diethyl ether?

Castenar kelner process, in castner kelnar process sodium metal extract at ...

in castner kelnar process sodium metal extract at cathode and calcium also why they do not mix if they extract at same chamber?

Hydrogen., what are the chemical properties of protium, deuterium and triti...

what are the chemical properties of protium, deuterium and tritium.

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