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

Energy cycle or metabolism - biomolecules, Energy cycle or metabolism A...

Energy cycle or metabolism A cell has small molecules that are denoted as micromolecules also large molecules that is denoted as macromolecules. The chemical equations of a liv

Transition elements of the f-block, Q. Transition elements of the f-block? ...

Q. Transition elements of the f-block? The salient features of the chemistry of the transition elements of the f-block. Due to filling of electrons in the f-orbitals of an inne

ANALYTICAL LAB, I NEED A DOCUMENT LOOKED AT FOR TOMORROW ITS CHROMATOGRA LA...

I NEED A DOCUMENT LOOKED AT FOR TOMORROW ITS CHROMATOGRA LAB AND ITS ASSESSED

The bond is formed between similar atoms, Which type of bond is formed betw...

Which type of bond is formed between similar atoms: (1) Ionic    (2) Covalent      (3) Coordinate               (4) Metallic Ans:  Covalent

Nitrocompounds, nitroalkane sare acidic in nature.Explain

nitroalkane sare acidic in nature.Explain

Calculate the composition of the vapor and liquid, A flash separator "flash...

A flash separator "flashes" (abrupt increase in temperature and pressure) a liquid stream containing multiple species. Not all of the liquid vaporizes, but the vapor that does form

Metal-metal sparingly soluble electrodes.., which one will be chosen as cat...

which one will be chosen as cathode, Ag/Ag+ or Ag/Agi/i

Complexation behaviour of the f-block, Q. Complexation Behaviour of the f-b...

Q. Complexation Behaviour of the f-block? Ions of actinide and lanthanide elements have a strong tendency to form complexes with a variety of oxygen and nitrogen donor ligands.

Show the occurrence of metals, Q. Show the Occurrence of Metals? Earth'...

Q. Show the Occurrence of Metals? Earth's crust and sea are the two main sources of metals. In the earth's crust metals occur both in the combined state in the form of minerals

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