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

Flash in forging, Q. Explain the following terms.             ...

Q. Explain the following terms.             (i) Flash in forging.            (ii) Fullering and up setting in forging.            (iii) Trimming of

Difference between fin and swell, Difference Between Fin and Swell    ...

Difference Between Fin and Swell          Swell : The unintentional bulges found on the casting surfaces are known as swells. Such enlargements on the casting surface are cau

#title.electronic devices., Advantages and dis advantages of a diode in ser...

Advantages and dis advantages of a diode in series /shunt

Sustainable energy processes, PEME5451/3451 SUSTAINABLE ENERGY PROCESSES As...

PEME5451/3451 SUSTAINABLE ENERGY PROCESSES Assignment 5: Transport fuels VLE submission deadline is Friday 24th February PART 1: (worth 40%, all parts marked equally) 1. Using the

Digit, Design the counters for the digital clock Minimum 100 words accepted...

Design the counters for the digital clock Minimum 100 words accepted#

How does plane diffraction grating forms a spectrum?, Q.  With necessary t...

Q.  With necessary theory explain the formation of spectrum by a plane transmission grating when composite light falls on it OR How does plane diffraction grating for

Corporate finance., The firm is considering an investment opportunity. The ...

The firm is considering an investment opportunity. The investment falls in the same class of risk as the firm, the project is financed with equity and debt. Explain all the steps i

What is the meaning of context-awareness, Question : (a) The Guide proj...

Question : (a) The Guide project has been developed to provide city visitors with a hand-held context-aware tourist guide. (i) In this case, what is the meaning of context-a

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