User Account

All Pages

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

In the transition of zn atoms, In the transition of Zn  atoms to Zn ++ ion...

In the transition of Zn  atoms to Zn ++ ions there is a decrease in the: (1) Number of valency electrons (2) Atomic weight (3) Atomic number (4) Equivalent weight A

Chemical bonding, Charectaristic of covalent bond

Charectaristic of covalent bond

Conductometric titration., titration curve or eak acid and eak base

titration curve or eak acid and eak base

Organic chemistry., #mechanism of base catalyzed addition for acetal format...

#mechanism of base catalyzed addition for acetal formation

Number of neutrons in heavy hydrogen atom is, Number of neutrons in heavy h...

Number of neutrons in heavy hydrogen atom is: (1) 0        (2) 1        (3) 2        (4) 3 Ans:  1

Electronic configuration exhibits, 3d 10 4s0 electronic configuration exhi...

3d 10 4s0 electronic configuration exhibits by; (1) Zn ++                                (2) Cu ++                          (3) Cd ++                      (4) Hg ++

Gas laws , what is the volume of a gas when the temperature is raised to 25...

what is the volume of a gas when the temperature is raised to 25 degrees celcius fro STP?

Criteria of purity, How viscosity and surface tension help in ascertaining ...

How viscosity and surface tension help in ascertaining criteria of purity for organic compounds

What is scientific law and theory, Q. What is scientific law and theory? ...

Q. What is scientific law and theory? A theory is a description that has been supported by many experiments. Theories declare broad principles of nature. Even though theories a

Invert sugar, definition

definition

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd