User Account

All Pages

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

Cycloalkane, formation of propane by parkin reaction

formation of propane by parkin reaction

Potentiometry, applications of potentiometry

applications of potentiometry

PH, what is pH value?

what is pH value?

Some basic concepts of chemistry, Equivalent weigjt of potash alum

Equivalent weigjt of potash alum

Buffer capacity, plz explain me about buffer capacity and its type

plz explain me about buffer capacity and its type

Inorganic chemistry, Orgel Diagrams of d-orbital systems

Orgel Diagrams of d-orbital systems

Energy level, For the n= 2  energy level, how many orbitals of all kinds ar...

For the n= 2  energy level, how many orbitals of all kinds are possible: (1) 2        (2) 3        (3) 4        (4) 5 Ans: 4

Decomposed at a lower temperature, Why li 2 CO 3 decomposed at a lower tem...

Why li 2 CO 3 decomposed at a lower temperature whereas Na2CO3 at higher temp?

The energy of the electron in the first orbit of hydrogen, The energy of th...

The energy of the electron in the first orbit of  He +   is  -871.6x 10 -20 J . The energy of the electron in the first orbit of hydrogen would be : (1) -871.6 x10 -20 J

Molar concentration of a saturated solution, The K sp of the phosphate fer...

The K sp of the phosphate fertilizer CaHPO 4 .2 H2O is 2.7 x 10 -7 at 25 o C.  What is the molar concentration of a saturated solution?  What mass of this compound will dissolve

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd