1. Engineering
  2. Chemical Engineering
  3. consider a case where a very thick electric wire that...

Question: consider a case where a very thick electric wire that...

Question details

Consider a case where a very thick electric wire that generates heat with a radial temperature distribution but also is covered with an insulation layer. The power of the heater is 5 W for a diameter of 1.2 cm and 10 cm in length. All heat is lost through the insulation layer to a surrounding of 298 K with an outside total heat transfer coefficient of 30 W/m2K. The thermal conductivities of the insulation layer and the electric wire is 0.1, and 10 W/m K, respectively. 1) if the thickness of the insulation layer is 2 mm, what is the maximum temperature inside the wire? 2) What is the critical thickness in order to minimize the maximum temperature? What is the maximum temperature?

Solution by an expert tutor
Blurred Solution
This question has been solved
Subscribe to see this solution