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, Chemical properties

Chemical properties

Illustrate phase diagram, Q. Illustrate phase diagram? Ans. Ther...

Q. Illustrate phase diagram? Ans. There are two things which influence phase change: 1. The pressure exerted on the surface of a substance. 2. The addition or rele

Rate of reaction in zero order , Why rate of reaction in zero order is inde...

Why rate of reaction in zero order is independent of concentration? Solution) Where r is the reaction rate and k is the reaction rate coefficient with units of time / concentrat

Soap, Ask question #Minimum 60 words accepted#

Ask question #Minimum 60 words accepted#

Rate of advancement, how do i calculate the rate of advancement of a week e...

how do i calculate the rate of advancement of a week electrolyte

Quantum chemistry, how to solve radial equation using the laguerre polynomi...

how to solve radial equation using the laguerre polynomial

Radius of electron in the first excited state of hydrog atom, The radius of...

The radius of electron in the first excited state of hydrogen atom is: (1) a 0                      (2) 4a 0            (3) 2a 0                            (4) 8a o

Boiler troubles and their consequences, Q. What are boiler troubles? Discus...

Q. What are boiler troubles? Discuss their consequences? Sol. Boiler feed water (water for steam making): water is very important engineering material which is mainly used fo

Properties of homologous series, properties of homologous series

properties of homologous series

Atomic absorption spectrometry, Types of burner system in AAS

Types of burner system in AAS

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