I am studying the effect of altering the insulation performance(u-value) of walls and windows that are directly exposed to ambient air in buildings with high internal temperatures. I use Energy Plus together with design builders.

So other walls (inner wall, ceiling, floor) except the outer wall are setting adiabatic . Because it is only to see change of outer wall.

And I select the output in E+ Surface average face conduction heat transfer rate.

I think, other walls have to have a value of zero except for the outer wall, but it's not. They all have value. Why?

In addition, when the U-value of the outer wall is enhanced, ( I mean that the wall's u-value 0.5 -> 0.2) Outer wall's "Surface inside face convection heat gain rate" value decreased, and other walls values are increased. Why?

I am studying the effect of altering the insulation performance(u-value) of walls and windows that are directly exposed to ambient air in buildings with high internal temperatures. I use Energy Plus together with design builders.

So other walls (inner wall, ceiling, floor) except the outer wall are setting adiabatic . Because it is only to see change of outer wall.

And I select the output in E+ Surface E+: "Surface average face conduction heat transfer rate.rate"

I think, other walls have to have a value of zero except for the outer wall, but it's not. They all have value. Why?

In addition, when the U-value of the outer wall is enhanced, ( I mean that the wall's u-value 0.5 -> 0.2) Outer wall's "Surface inside face convection heat gain rate" value decreased, and other walls values are increased. Why?Why?

please answer about my question.

Thank you.