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

Synthesis of proteins - functions of nucleic acid, Synthesis of proteins : ...

Synthesis of proteins : The DNA consists of the genetic code and directs protein synthesis by RNA. The two helix of DNA partly uncoils and approximately the individual strands

Iodometric titrations and iodimetric, Iodometric Titrations and Iodimetric ...

Iodometric Titrations and Iodimetric The reduction of free iodine to iodide ions and oxidation of iodide ions to free iodine takes place in these titrations. I 2 + 2e - →

Stoichiometry.., wht is the difference between molar mass & molecular mass?...

wht is the difference between molar mass & molecular mass?

The property is commonly exhibited by a covalent compound, Among the follow...

Among the following which property is commonly exhibited by a covalent compound: (1) High solubility in water           (2) High electrical conductance (3) Low boiling po

Compounds of group 16 elements, Q. Compounds of Group 16 Elements? We w...

Q. Compounds of Group 16 Elements? We will now discuss some compounds like the hydrides, halides and oxides of the Group 16 elements.  All elements of this group form simple

#title.p block elements., which element has the highest oxidation state and...

which element has the highest oxidation state and why?

The highest melting point, Which of the following has highest melting point...

Which of the following has highest melting point: (1)  BaCl 2                                             (2)  MgCl 2               (3)  Cacl 2

Ratio between the neutrons in c & si with respect to atom, The ratio betwe...

The ratio between the neutrons in C  and  Si  with respect to atomic masses 12 and 28 is: (1) 2 : 3  (2) 3 : 2       (3) 3 : 7             (4) 7 : 3 Ans: 3 : 7

Lubrcants, Respected Mam/Sir Please tell me the detailed inforamtion about ...

Respected Mam/Sir Please tell me the detailed inforamtion about lubricant in metal rubbing

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