How to Calculate Heat Loss Per Hour Through a Glass Window Pane?

[preluderacer]

Homework Statement

A glass window pane is 2.7 m high, 2.4 m wide and 2 mm thick. The temperature at the inner surface of the glass is and at the outer surface 4°C. How much heat is lost each hour through the window?

The Attempt at a Solution

I have the stats on the glass like specific heat ect.

Im not quite sure what equations to use to solve this

 

[NobodySpecial]

How would you expect the power lost to depend on the area of the window and the temperature difference?

Do you know the equation for electrical resistance of a material? How is this similar?

 

[preluderacer]

no, I am not quite sure what that equation is.

 

[NobodySpecial]

You can work it out simply.

You expect the heat loss to go up with more area - double the area = double the heat loss.
And you expect it be proportional to the temperature difference, double the temperature difference double the heat loss.

so you have power is proprtional to area * temperature differences
or P = k A dt
where k is some constant for your material

Depending on how your data is given 'k' might be thermal conduction = bigger number is more heat lost, or thermal resistance = small number is more heat lost, so you migth have K or 1/K in the equation. You can tell from the units given for 'k'