Fundamentals of Heat Conduction

Question 1

What is the difference between q, q’’, and qdot?

Answer 1

q = total heat transfer
q’’ = q per unit area
q dot = heat generation per unit volume

Question 2

How do you solve an unsteady conduction system with constant heat supplied at an end q for simple cases?

Answer 2

1. Use General form of 3D conduction
2. Simplify Equation
3. Set Boundary Conditions
4. Solve

Question 3

What are symbols for heat flux and heat rate?

Answer 3

heat flux = q dot
heat rate = q

Question 4

What are the units of q, ‘’, and qdot?

Answer 4

q = Watts
q’’ = Watts = Watts
q dot = Watts / meter cubed