This simple script computes the U-Value for building components given the characteristics of the individual layers of the component. The script also has a small implementation which reads from an external file the properties of the individual layers given an specific name. In order to make the functions described on the main script 'Uval.R' you have to run in within your working session via:
source("./Uval.R")This means that the main script 'Uval.R' has to be in the working path of your environment. You can't just call the script using an absolute path as the scrip will use the folder structure of the root folder. The easiest way to make sure that R finds the script is to point R into the right directory with the 'setwd()' command:
setwd("~/workspace/R/UvalR")The root folder structure is as follows:
+ root
|---Data # The script will look for a csv file containing materials data
| in this directory. The csv name has to be 'materials.csv'
|---Examples # Some examples on how to run the script.
|---FIGURES # The script will store the plots here.
|---TABLES # And the corresponding result data here.All the examples presented below are stores in the folder './Examples/'.
Reinforced concrete.
This script will output the value: 0.1973745, that the U value of the building component in [W/m2K]
It will also write two figures in folder './FIGURES/'
Light outside wall (Leichte Außenwand).
This script will output the value: 0.2240037, that the U value of the building component in [W/m2K]
It will also write two figures in folder './FIGURES/'
Internal insulation (Innendämmung).
This script will output the value: 0.4719366, that the U value of the building component in [W/m2K]
It will also write two figures in folder './FIGURES/'
Using an external data file.
This examples uses an external data file containing the properties of the different material layers.
This script will output the value: 0.4814479, that the U value of the building component in [W/m2K]
It will also write two figures in folder './FIGURES/'
