Thermal conductivity conceptual

[sasuke07]

Homework Statement

So the outside of a refrigerator is made up of plastic, metal, and insulation? Which is the most important and why.

Homework Equations

no equation needed.

The Attempt at a Solution

I thought that the insulation would be the most important because it reduces the overall heat flow. But my professor is looking for more and i really don't know what else to say.

 

[Dadface]

Homework Statement

So the outside of a refrigerator is made up of plastic, metal, and insulation? Which is the most important and why.

Homework Equations

no equation needed.

The Attempt at a Solution

I thought that the insulation would be the most important because it reduces the overall heat flow. But my professor is looking for more and i really don't know what else to say.

I guess your professor wishes you to discuss the pros and cons of all three materials such as the relevant mechanical/physical and other properties and other issues relating,for example,to economic and environmental considerations.