21 February 2020
I have deleted temperature BC. However, what is the function of the initial temperature and how will it influence my analysis?
The material of the window frame is UPVC. The aim of my project is to increase the thermal efficiency of the window frame by decreasing the thermal conductivity, where the chamber design in the frame is able to reduce the amount of heat from the outside face from escaping into the room (inside face). I am hoping to realise this goal by showing that the cooler temperatures are covering the majority of the frame structure and this will mean an increase in thermal efficiency of the window frame. However I am still quite unsure if this will be sufficient or correct to conclude my project aim or this other idea. The other idea is where I only set a temperature on the outside face and find the eventual temperature on the inside face, and I am not sure if this is doable so i will need your kind advice.
Also as for the film coefficient, I am still confused by it even after doing some research. Is it the same as heat transfer coefficient? If it is then can I derive the film coefficient through the math equation for heat transfer coefficient? Will it be affected by the temperature I want to set? If I were to change the outside face temperature to 36.4 degree Celsius (free convection), will my setting of 5 W/m^2-K(film coefficient) still be the same?
Too make sure, for an air conditioned room, do you know if I will be able to assume low speed of airflow over the surface (10 W/m^2-K) at 25 degree Celsius? http://thermopedia.com/content/841/
I noticed a feature which is the fluid solid interface. May I know how will the inclusion of this setting influence the results or what is the function of it?
May I also ask if you are familiar with the design in the window frame and if you know why are there slants and curvatures in certain designs? (or to whoever else reading this thread!!!)