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

Ethyl group in the most stable or not, The propyl group on carbon-4 has to ...

The propyl group on carbon-4 has to be gauche to either the ethyl group or the isopropyl group. Due to the isopropyl group is larger, the propyl group is gauche to the ethyl group

Define enantiomer technique that has a chiral attribute, Distinguishing amo...

Distinguishing among enantiomers requires a technique that has a chiral attribute. (a) Boiling point does not distinguish among two enantiomers. (b) Optical rotation does ha

Classification of proteins - biomolecules, Classification of proteins -  b...

Classification of proteins -  biomolecules As per to the chemical composition, proteins are categorized into two classes 1. Simple proteins 2. Conjugated proteins

The ketone is more stable than its enol, The ketone is more stable than its...

The ketone is more stable than its enol Because the ketone is more stable than its enol, more energy must be expended for it to ionize.  Consequently, the ketone is less aci

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

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

Calculate the solubility product of agcl, Calculate the solubility product ...

Calculate the solubility product of AgCl.  Ag 5- and Ag 10- nanoclusters having of metallic silver but nevertheless have standard potentials dissimilar from the potential of

Calculate the temperature of that superheated steam, It is desired to creat...

It is desired to create 5 kg of superheated steam at 300 o C and 20 bar using an isobaric mixer. If 543 kJ of heat are sent to the system, and 2 kg of saturated steam is mixed wit

Benzaldehyde, Preparation of benzaldehyde by etard''s reaction

Preparation of benzaldehyde by etard''s reaction

Discuss cohesive energy and electron affinity, Discuss "cohesive energy" an...

Discuss "cohesive energy" and "electron affinity". ‘Cohesive energy’:  In a chemical bond, it’s the energy required to dissociate a solid into isolated atoms or molecules as ap

What mass of sodium chloride is produced in the reaction, A reaction among ...

A reaction among sodium hydroxide and hydrogen chloride gas produces sodium chloride and water and a reaction of 22.85g of sodium hydroxide with 20.82g of hydrogen chloride gives o

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