Find the shell temperature, Physics

Assignment Help:

Q. Find the shell temperature?

In a shell-and-tube heat exchanger, one fluid passes through a central tube while another fluid flows through an outer shell in the opposite direction. The purpose is to heat the fluid passing through the central tube. It is possible to maintain a constant temperature TS of the outer shell fluid by continually condensing a vapor (for example, steam) along the length of the shell.

By integrating a heat balance equation along the tube, it is possible to relate the length L and diameter D of the heat exchanger to the input temperature T1 and output temperature T2:

1504_Physical Setting.png

and where

P  = viscosity of the fluid (depends on T)

k  = thermal conductivity of the fluid (depends on T)

cp  = specific heat of the fluid (depends on T)

m  = flow rate of the fluid through the tube

D  = diameter of the tube

The temperature dependence of the specific heat, viscosity, and thermal conductivity depend on the working fluid and, therefore, upon temperature, T. For this assignment use:

21_Physical Setting1.png

The thermal conductivity data,  () kT , has been evaluated, experimentally, at only a few data (temperature) points.  We have decided, therefore, to use a polynomial approximation and we do so with the full knowledge that our experimental data may contain errors.

where T is measured in degrees Fahrenheit (oF) throughout.

The Problem:

Given the values of D, m, T1, T2, L, determine the necessary shell temperature, TS. In particular, given that D =1.95 inches (convert to ft), m =25 lb/hr, 170TF, and the heat exchanger length is L = 5 ft, find the shell temperature TS needed to heat the output gas to T2 = 360oF.

2233_Physical Setting2.png


Related Discussions:- Find the shell temperature

Coulombs law, anyone guide me about the explanation of coulombs law

anyone guide me about the explanation of coulombs law

Malus law, state and explain malus law?

state and explain malus law?

Pressure, a drawing pin is pushed against a wooden table with force of 10N....

a drawing pin is pushed against a wooden table with force of 10N. calculate the pressure exerted by the pin at a point on table if area of point is 0.01m square

Straingth of material, the steel end-cap is fitted into grooves cut in the ...

the steel end-cap is fitted into grooves cut in the timber post.the working stresses for the post are 1.8 mpa in shear parallel to the grain and 5.5 mpa in bearing perpendicular to

Astronomy, The birghtness of objects past Neptune actually varies approxima...

The birghtness of objects past Neptune actually varies approximately as 1/d^4. Why is that the case?

Evaluate the minimum value of h in terms of r, A sled slides down a frictio...

A sled slides down a frictionless track and loops the loop without falling off. What is the minimum value of h  in terms of  r ? The only other information given is that the an

Evaluate the percent error, Q When calculate Planck's constant, a student's...

Q When calculate Planck's constant, a student's calculations produce values of 5.78 × 10 -34   J·s and 7.29 × 10 -34 J·s. If the accepted value is 6.63 × 10 -34  J·s, what is

1 dimensional motion, 2 cars, 1 and 2 starting from rest are moving with sp...

2 cars, 1 and 2 starting from rest are moving with speeds v1 and v2 m/s(v1>v2). car 2 is ahead of car1 by ''s'' metres when the driver of car 1 sees car 2. what minimum retardation

Estimate the heat capacity and constant volume, The molar heat capacity of ...

The molar heat capacity of a gas at constant pressure is 18.7 J mol -1 K -1 .    What is the heat capacity of 9.4  moles of this gas at constant volume ?

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