4 walls vs 1 wall - House regulation on heating

Hi MathWorks team,

While studyin a House Heating system, I failed to understand why would the model of the house only have one wall insted of 4 walls and a floor ? (House Heating System)

I'm trying to model my own model on this theme, that is a room heating system for starters.

The model from MathWorks

The idea of a model I have in mind

Answer 1

[Nivedita]

Hello Patrik,

On clicking the "Air-Wall Convection" block, under Parameters, the Area is defined by the variable "wallArea" in m^2. If you look the Model Properties and navigate to the "InitFcn" under Callbacks, you can find the definition of the above said variable as follows:

% House length = 30 m
lenHouse = 30;
% House width = 10 m
widHouse = 10;
% House height = 4 m
htHouse = 4;
wallArea = 2*lenHouse*htHouse + 2*widHouse*htHouse;

This depicts that all the 4 walls have been taken into consideration in the model. In my opinion, exchange of heat through the floor is not considered and thus the floor is not taken into consideration.

I hope this clarifies your query!

[Patrik Kusevic]

Hi Nivedita !

Now that you have mention it and after looking into it,

thank you for the help !