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

Explain the components approach to the phase rule, Explain the Components a...

Explain the Components approach to the phase rule? The derivation of the phase rule in this section uses the concept of components. The number of components, C, is the minimum

Uses of DDT, uses of DDT, Saccharin, BHC and Chloramine

uses of DDT, Saccharin, BHC and Chloramine

Analytical, effeciency of plate of chromotography

effeciency of plate of chromotography

Angles and areas, how to find angles and areas with cos and tan

how to find angles and areas with cos and tan

Chemical answers, 1. Enter the symbol of a sodium ion, Na+, followed by the...

1. Enter the symbol of a sodium ion, Na+, followed by the formula of a sulfate ion, SO42- ..Express your answers as ions separated by a comma. 2.Enter the expression 147N+a, wher

Explain the illustration modelling for process and recipe, Strategy 3 ...

Strategy 3 Two levels of wheat flour 3960g and 3940g and two levels of baking powder 60g and 40g are selected to be tested. In all trials the percentages of A, B and C are fix

An electronic transition from 1s orbital of an atom causes, An electronic t...

An electronic transition from 1s orbital of an atom causes: (1) Absorption of energy (2) Release of energy (3) Both release or absorption of energy (4) Unpredictable

Discuss the ion exchange process of water softening, Discuss the ion exchan...

Discuss the ion exchange process of water softening. Give an account of the variety of mechanisms of Lubrication. Write notes on bulk and solution polymerization techniques.

Explain sensory evaluation during product life cycle, Sensory evaluation du...

Sensory evaluation during product life cycle The basic procedure for developing a new  product, and supporting it while marketed, included distinct steps that are constant no

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