Thank you so much for your help.

I am working on a project to evaluate the thermal flow through a window frame. The aim of my project is to increase the thermal efficiency of the window frame by decreasing the thermal conductivity, where the air chamber parameters in the frame are able to reduce the amount of heat from the outside face from escaping into the room (inside face). 

Thus, my analysis is to show the flow of the heat through the window with the settings stated in the post above.

Below is a figure for reference. 

However, I have solved this analysis without changing the default setting of initial temperature (22degree celcius) as I am unsure of what temperature I should set it at.