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

Define order of reaction , The order of reaction is the number...

The order of reaction is the number of moles whose concentrations verify the rate of a reaction at a given temperature

Paking of atom , how i can prepare assignment .

how i can prepare assignment .

Reversible reaction, what is the advantag of reversible reaction?

what is the advantag of reversible reaction?

2, what is hydrogen?

what is hydrogen?

Balance the following equation that represents a combustion , C2H5OH -> CO2...

C2H5OH -> CO2(g) + H2O(g)

Electrochemistry, factors that influence ionic migration

factors that influence ionic migration

Energy of second bohr orbit of the hydrogen atom & energy, The energy of se...

The energy of second Bohr orbit of the hydrogen atom is -328 kJ mol-1, hence the energy of fourth Bohr orbit would be: (1) - 41 kJ mol -1 (2) -1312 kJ mol -1   (3) -164

Differential extraction, what is the exact process for the whole differenti...

what is the exact process for the whole differential extraction?

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

titration curve or eak acid and eak base

Metal halide, why pcl3 is less polar than sicl4

why pcl3 is less polar than sicl4

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