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

#title, Aluminium utensils should not be kept in water overnight.Give reaso...

Aluminium utensils should not be kept in water overnight.Give reason

Atom, how many type of atom?

how many type of atom?

Reactants in excess, Q. Use of Reactants in Excess? Ans. Consider ...

Q. Use of Reactants in Excess? Ans. Consider a recipe for pancakes that calls for 2 cups of pancake batter mix and 1 cup of water. The result of this recipe is 14 pancakes

Rutherford''s experiment on scattering of particles, Rutherford's experimen...

Rutherford's experiment on scattering of particles showed for the first time that the atom has: (1) Electrons        (2) Protons     (3) Nucleus               (4) Neutr

Calomel electrode, Construction and working of calomel electrode with a lab...

Construction and working of calomel electrode with a labelled diagram

Show the factors affecting equilibrium position, Q. Show the Factors Affect...

Q. Show the Factors Affecting Equilibrium Position? Ans. The term equilibrium position refers to the relative proportions of reactants and products in the equilibrium mixt

Lanthinides, how can you explain the fact that lanthinides are highly elect...

how can you explain the fact that lanthinides are highly electopositive?

#title.acetaldehyde and ketone., #uestion.. what is difference between acet...

#uestion.. what is difference between acetaldehyde and ketone

Calculate the slope of a line from data points, Q. Calculate the Slope of a...

Q. Calculate the Slope of a Line from Data Points? Compute the slope of a line that contains these data points (3.0 cm 3 , 6.0 g) and (12 cm 3 , 24 g). To compute the slope of

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