Heat Transfer through a Window

What is the temperature difference across the window in the given problem?

• 10°C

• 20°C

• 30°C

• 40°C

What is the convection constant for the outside surface of the window?

• 10 watts per m² per Kelvin

• 15 watts per m² per Kelvin

• 20 watts per m² per Kelvin

• 25 watts per m² per Kelvin

Which factor does NOT affect the convection constant?

• Wind speed

• Surface area

• Air motion

• Glass thickness

What is the heat conductivity constant of the glass used in the window?

• 0.5 watts per meter per Kelvin

• 1.2 watts per meter per Kelvin

• 0.8 watts per meter per Kelvin

• 1.0 watts per meter per Kelvin

What is the final step in calculating the heat loss through the window?

• Calculate the temperature difference

• Measure the window area

• Determine the convection constants

• Plug in the numbers and solve using algebra