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

AVIATION, CONSTRUCTION, OPERATION, AND MAINTENANCE OF AVIATION METAL PROPEL...

CONSTRUCTION, OPERATION, AND MAINTENANCE OF AVIATION METAL PROPELLER

Elastic and plastic deformation, Q. Define elastic and plastic deformation ...

Q. Define elastic and plastic deformation and differentiate between them. Ans. Elastic deformation : Elastic deformation is that part of the deformed material, when the

Thermodynamics, original temp. of plate is 25 degree c.when put in burnace ...

original temp. of plate is 25 degree c.when put in burnace its upper part is 250 c and lower is 100 and mass is 56kg.find out heat transfer

Biomediacl instrumentation, Design a dc-coupled one op amp circuit that wil...

Design a dc-coupled one op amp circuit that will amplify the 100uV EOG to have the maximal gain possible without exceeding the ttypical guarenteed linear outpt range.

Aeroengines - cfd, Essentially, the strategy of CFD is to replace the conti...

Essentially, the strategy of CFD is to replace the continuous problem domain with a discrete domain using a grid domain with a discrete domain using a grid. In a continuous doma

Chemical engineering, i got an assignment on chemical engineering reactions...

i got an assignment on chemical engineering reactions

Uncertainty propagation, Uncertainty propagation In order to calculate ...

Uncertainty propagation In order to calculate the error of a quantity derived from a mathematical formula which has measured variables with errors, one should use the uncertain

Matlab, how to use mean and standard deviation with matlab?

how to use mean and standard deviation with matlab?

Digital frequency meter, Explain block diagrams of digital frequency meter ...

Explain block diagrams of digital frequency meter and describe function of each part

Comparison of 2-stroke and 4-stroke engines, COMPARISON OF 2-STROKE AND 4-S...

COMPARISON OF 2-STROKE AND 4-STROKE ENGINES: Two-stroke engine possesses the following advantages over the four stroke type: 1.      Because of its valueless construction, the

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