Spotlight on Daylighting
Click here to read more articles about Software
A version of this article appears in the May/June 2006
issue of Home Energy Magazine.
May 01, 2006
Daylighting systems, which use natural lighting to supplement electric lighting, have the potential to cut energy use, reduce peak demand, and create a more desirable indoor environment, yet these systems often fail to live up to their potential (see “New Designs in Active Daylighting,” HE Jan/Feb ’06, p. 40). One reason they fail is that they are sensitive to photosensor placement and performance, but there have been no easy-to-use tools to help designers predict performance and determine optimum sensor positioning. The Sensor Placement and Orientation Tool (SPOT) is a free software package that helps designers establish correct photosensor placement relative to a proposed daylighting and electric lighting design (see Figure 1). It also analyzes and predicts overall system performance prior to field installation and commissioning. Features and Benefits Anyone who can use Microsoft Excel can use SPOT.The user interface is an Excel worksheet, while most of the calculations made, using a sophisticated daylighting software program known as Radiance, are invisible to the user. Based on user input, the tool calculates nighttime illumination levels and the range of daylight contribution throughout ...
To read complete online articles, you need to sign up for an Online Subscription.
Once an order has been placed there is an automatic $10 processing fee that will be deducted with any cancellation.
The Home Energy Online articles are for personal use only and may not be printed for distribution. For permission to reprint, please send an e-mail to firstname.lastname@example.org.