Reverse calcualtion
Menu Calculations->Reverse calculation
Normally, in the process of lighting calculation the models of luminaires to be used are previously known. Sometimes the location of the luminaires is also given. In this case the task of the user is to place the luminaires, perform the calculations and check that the lighting levels are the expected.
The reverse calculation is the reverse process, this is, the designer determines the level of illuminance required and the program finds the number of luminaires needed and places the luminaires.
However some criterion must be follow because the number of solutions can be infinite.
Euroluxor EM 2.0 has the following criterions.
1.- The number of luminaires obtainted must be as low as possible and must satisfy the required illuminace level.
2.- Only one model of luminaire can be used at a time.
3.- The luminaires are all placed at the same height (defined by the designer)
4.- Only two distributions of luminaires are allowed:
- Square mesh in the whole work area
- Square mesh in the whole work area and if evacuation routes and/or check point exist, some luminaires will be sucesively placed over these elements. (This criterion is called mixed distribution)
Selecting the model of luminaire:
There are two posibilities:
Objectives and parameters:
Some parameters can be modified before the calculation. They are the following:
Parámetros que se pueden cambiar:
Results:
In order to start the calculations push the button:
The calculations are shown in the "Results" list.
Apply the results:
The program will place automaticaly the luminaires. First select a model of luminaire in the "Results" list. Now push the following button:
The luminaire edition window will be opened. Just confirm the operation.
NOTES:
- If the model of luminaire has not been previously entered in the work area ,this will be done automaticaly. Do not change any model property because this may affect the calculations.
- If the work area already has the model of luminaire selected, the program will ask for removing the previous luminaire distribution. The user must confirm this.