This tutorial explains how to calculate and display artificial lighting levels using points in an Ecotect model.
You will need about 10 minutes to complete this tutorial.
Training and Accreditation
Successfully completing this tutorial fulfills one of the practical skills required for completing Level 1 of the Artificial Lighting training module.
To complete this tutorial, download and open the LightingPoints.eco file located under the Attachments' section at the end of this tutorial.
- The Ecotect file contains a simple thermal model consisting of a single zone, some light objects and an array of point objects. We need at least one of each of these objects in order to perform an artificial lighting analysis using points.
You need at least one zone, one point and one light in order to perform an artificial lighting analysis using points.
- The next wizard screen allows you to choose whether points or an analysis grid is used for the calculation. As we only have points in this model, the At Specific Points in the Model is selected by default. If you wish to isolate the analysis to only certain points press F2 to return to the model, select the required points, and then press F2 again to check the Selected Points Only checkbox option. Click Next when you are ready to proceed.
- Even though you are analysing artificial lighting levels, it is still necessary to specify the Design Sky Illuminance in your model. This allows you to compare electric lighting levels to those provided by daylight either together or in isolation. If you are unsure of how to calculate or adjust these settings, accept the default selections offered by Ecotect, and then click Next.
- The final wizard screen presents a summary of all of the settings you have selected. Make any adjustments, if necessary, and then click Ok to commence the lighting analysis.
- Ecotect uses the Point-By-Point method for determining artificial light levels within an enclosure. This simply calculates the sum of contributions from all light sources actually visible from each measurement point. The contribution of diffuse light is not calculated in this method. Thus, the lighting levels produced using this algorithm are to be used only as a guide during initial decision-making as they provide a relative scale from which to measure the effects of different model changes.
- If necessary, Ecotect can export your model to Radiance for a more comprehensive lighting analysis.