ME 315 Quizziz 2

What assumptions have been made to the following heat diffusion equation?

• Adiabatic (insulated)

• One dimensional heat transfer

• Steady state

• No heat generation

Besides 1-D heat transfer, what assumptions have been made to this heat diffusion equation?

• Steady state

• Constant thermal conductivity

• Constant density

• No heat generation

What is a valid equation for emissive power?

• E = σT⁴

• E = εE_b

• E = A_sE_b

• E = αG

What is the total thermal resistance from T₁ to T₃?

• 0.0025 K/W

• 0.0225 K/W

• 0.02 K/W

With a total thermal resistance of 0.0225 K/W, what is the total heat transfer from surface 1 to surface 3?

• -1333 W

• 0.675 W

• 1333 W

• -0.675 W

With a heat transfer rate of 1333 W, what is T₂?

• 45 °C

• 56.7 °C

• 63.3 °C

• 50.2 °C