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

#thermochemistr, can all the total heat content available betotally convert...

can all the total heat content available betotally converted to work done?

Safety in the laboratory, Laboratory safety During your observation of che...

Laboratory safety During your observation of chemistry you will conduct experiments in the laboratory. When working in the lab you are accountable for the safety of yourself and o

Lime soda process, state functions of lime and soda in lime soda process

state functions of lime and soda in lime soda process

Assignment, Discuss hartree-fock self consistent field theory . what are it...

Discuss hartree-fock self consistent field theory . what are its demerit.

When an electron drops a higher energy level to low energy, When an electro...

When an electron drops from a higher energy level to a low energy level, then: (1) Atomic number decreases (2) Energy is absorbed (3) Atomic number increases (4) Energ

Organic chemistry, perkin ring clousre reaction

perkin ring clousre reaction

Amines, Amines are soluble in organic solvents whereas ammonium salts are n...

Amines are soluble in organic solvents whereas ammonium salts are not. Is it true?   Ans) yes because amine is contain R-NH2 group where R is carbon groups so they are in polar nat

Molten sodium chloride conducts electricity, Molten sodium chloride conduct...

Molten sodium chloride conducts electricity due to the presence of: (1) Free electrons (2) Free ions (3) Free molecules (4) Atoms of sodium and chlorine Ans:  Free

Normality, #question.how you can prepare 5 normal solution of potassium nit...

#question.how you can prepare 5 normal solution of potassium nitrate in 2 litre volume?

Physical properties of elements of group 13, Elements of Group 13 are less ...

Elements of Group 13 are less metallic than those of groups 1 and 2. Within the group, there is a variation in metallic character. Boron, the smallest element in this group is a no

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