Heat transfer, engineering, Other Engineering

Assignment Help:
A heat recovery device involves transferring energy from hot flue gases passing counter currently through an annular region to pressurized water flowing through the inner tube of the annulus. The inner tube has inner and outer diameters of 24 and 30 mm, respectively, and is connected by eight struts to an insulated outer tube of 60 mm diameter. Each strut is 3 mm thick and is integrally fabricated with the inner tube from carbon steel (k = 50 W/m K). Consider the situation for which water and flue gases enter the device at 300 K and 800 K, respectively. The flue gases may be assumed to have properties of air. The mass flow rate of water is 0.2 kg/s. The mass flow rate of flue gases at 1.0 kg/s. If the desired outlet temperature of the pressurized water is 350 K, determine:

i) The outlet temperature of flue gases
ii) The heat transfer coefficient at the water side
iii) The heat transfer coefficient at the air side
iv) The overall heat transfer coefficient based on the inside perimeter (Ui)
v) The required length of this heat recovery device
Hints: 1) The struts can be treated as rectangular fins with an adiabatic tip.
2) Assume a uniform heat transfer coefficient on the flue gas-side (ho).

Related Discussions:- Heat transfer, engineering

Hot and cold working, the amount of cold working metal can withstand is dir...

the amount of cold working metal can withstand is directly related to which properties? name two and also discuss the effect that cold working has upon these properties?

Finanacial management, Why is it important for engineering students to have...

Why is it important for engineering students to have financial management as a subject?

EMI, explain ramp type

explain ramp type

Matlab, program how to estimate the inner curve using spline interpolation

program how to estimate the inner curve using spline interpolation

Magnetic detector plug debris analysis of aircraft , Magnetic Detector Plug...

Magnetic Detector Plug Debris Analysis of aircraft : The magnetic chip detectors (MCDs), are small, permanent magnets installed in the scavenge/return lines of the engine oil s

Pov display, require help in making pov display

require help in making pov display

climb performance , Two types of climb will be considered. The first is th...

Two types of climb will be considered. The first is the so-called steady climb. This is a climb in which the all acceleration components (i.e. parallel and perpendicular to the fli

Linear programming application in software industry, What could be applicat...

What could be application of linear programming in software development?

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