Can TDDs impact funding?

  • By Neall Digert
  • 09/01/15

As more states move from enrollment to performance-based funding systems, colleges and universities need to find ways to fuel student achievement.

Numerous studies have shown that daylight in classrooms plays an important role in student performance. Its natural brightness, variability and perfect color rendition help students stay alert, work more productively and perform better.

Yet unlike conventional daylighting options (e.g., windows and skylights), tubular daylighting devices (TDDs) deliver natural light without solar heat gain. The result is a brightly lit, comfortable learning environment that allows students and instructors to excel.

When looking for systems that bring in the most light with the least amount of heat, the light-to-solar-heat gain (LSG) ratio is a key metric. It quantifies the amount of usable light to solar heat transmitted into a space. The higher the LSG ratio, the better. A high-performing fenestration system will have an LSG ratio between 1.0 to 1.5, although recent technological advancements have resulted in breakthrough ratios of 3.0 and higher for TDDs.

Innovations prompting this include patented and proprietary daylight-collection domes, lenses and reflectors that maximize light capture and reject heat at the rooftop. Reflective tubing with integrated heat-filtering (cooling) properties further increases performance by transferring large amounts of daylight while minimizing heat gain.

Systems with daylight collectors raise the LSG ratio even higher because they capture natural light that typically bypasses the daylight collection system. In such instances, previously unattainable values nearing 5.0 are possible.

With TDDs, higher education facilities now have a viable solution that promotes student achievement and offers an advantage when it comes to performance funding.

This article originally appeared in the issue of .

About the Author

Neall Digert, Ph.D., MIES, is vice president of Product Enterprise for Solatube International, Inc., Vista, CA (www.solatube.com).

Featured

  • Brightly Software, XOi Partner for New HVAC Data Solution

    Siemens company Brightly Software recently announced a partnership with data intelligence company XOi to integrate real-time HVAC system data into Brightly’s Asset Essentials CMMS, according to a news release. The integration will allow facilities more insight into HVAC system performance, health, and risk across their operations.

  • ed tech conference calendar

    Upcoming Awards, Events & Webinars

  • Armstrong World Industries Acquires Geometrik

    Armstrong World Industries, designer and manufacturer of interior and exterior architectural applications like ceilings, walls, and metal solutions, recently announced its acquisition of Canada-based Geometrik, according to a news release. The British Columbian Geometrik specializes in designing and manufacturing wood acoustical and wall systems.

  • South Texas K–12 District Debuts Region’s First Electric Bus Fleet

    The Valley View Independent School District in Pharr, Texas, recently announced a partnership with Highland Electric Fleets to launch the district’s—and the region’s—first fleet of all-electric school buses, according to a news release.