2- Steady State Heat Conduction (3).pdf - Solution of UPSC Papers Of Heat Transfer Steady State Heat Conduction Prepared By Brij Bhooshan Asst Professor

# 2- Steady State Heat Conduction (3).pdf - Solution of UPSC...

This preview shows page 1 - 4 out of 23 pages. For more information log on Brij Bhooshan Asst. Professor B.S.A College of Engg. & Technology, Mathura (India) Copyright by Brij Bhooshan @ 2013 Page 2 2 Solution of UPSC Papers of Steady State Heat Conduction Now thermal resistance due to conduction is Now net thermal resistance is R th = R ci + R 1 + R 2 + R 3 + R c0 Now we know that heat flux Also we know that Using equation (1) and (2), we have where U 0 is overall heat transfer Then overall heat transfer is 1991 Problem: Starting from basic differential equation, derive an expression for the temperature distribution in a cylindrical rod in which a uniform heat generation occurs and the surface temperature of the rod is T S . Mention the assumptions. [IAS-1991] Solution: Let us consider a long solid cylinder of radius R with internal heat generation as shown in above diagram, such as an electric coil in which heat is generated as a result of the electric current in the wire or a cylindrical nuclear fuel element in which heat is generated by nuclear fission. The one-dimensional heat conduction equation in cylindrical coordinates is On integration 0 For more information log on Brij Bhooshan Asst. Professor B.S.A College of Engg. & Technology, Mathura (India) Copyright by Brij Bhooshan @ 2013 Page 3 3 Solution of UPSC Papers of Heat Transfer By Brij Bhooshan Again integration where A and B are the arbitrary constants.  #### You've reached the end of your free preview.

Want to read all 23 pages?

• Fall '15
• • • 