Register
A 5cm OD and 0.5cm thick copper pipe [k=386W/m.°C] has hot gas flowing inside at a temperature of 200°C with a heat transfer coefficient of 30W/m2.°C. The outer surface dissipates heat by convection into
159k views
0 votes
A 5cm OD and 0.5cm thick copper pipe [k=386W/m.°C] has hot gas flowing inside at a temperature of 200°C with a heat transfer coefficient of 30W/m2.°C. The outer surface dissipates heat by convection into the ambient air at 20°C with a heat transfer coefficient of 15W/m2.°C. determine the heat loss from the pipe per meter length

User Dally
by
7.0k points

1 Answer

6 votes

Answer:

Q=260.96W/m

Step-by-step explanation:

you should raise the heat transfer equation between the inner part of the tube and the outer part taking into account the convection and conduction resistances

as they are asking us for the heat per unit length, then the conduction and convection resistances are like this

Rh=1/(hDpi)

Rc=ln(De/Di)/2piK

I attached the complete procedure

A 5cm OD and 0.5cm thick copper pipe [k=386W/m.°C] has hot gas flowing inside at a-example-1
User Shawanna
by
6.6k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

7.6m questions

10.2m answers

Other Questions

A piston-cylinder device fitted with stops in the cylinder walls contains 2.1 kg of water initially at 150 kPa and 30 °C. Heat is transferred to the system until the final temperature reaches 250 °C. The
4. Which of the following is the first thing you should do when attempting to park? A. Securing the parking spot by standing in it B. Turning on your hazard lights C. Confirming the space can fit your
A water towers lowest point is 405 ft and the main line is 6 feet below the ground. The ground elevation is at 276 ft. The main line travels 2.9 miles. The pipe will travel through the following flanged
An activated sludge plant is being designed to handle a feed rate of 0.438 m3 /sec. The influent BOD concentration is 150 mg/L and the cell concentration (MLVSS) is 2,200 mg/L. If you wish to operate the
The bulk modulus of a fluid if it undergoes a 1% change in volume when subjected to a pressure change of 10,000 psi is (a) 0.01 psi (b) 0.001 psi (c) 0.00001 psi (d) 0.000001 psi (e) none of these
Link Copied!