Skip to main content
Add as a preferred source on Google

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

  • Round Rock ISD Completes New Early College High School

    Round Rock ISD near Austin, Texas, recently announced that construction is complete on a new, 46,500-square-foot campus for Early College High School, according to a news release. The new facility will allow the school’s students and staff to move from portables into a permanent building and increase its enrollment to 500.

  • NWEA Report Recommends K–12 Natural Disaster Recovery Strategies

    The Northwest Evaluation Association (NWEA), a K–12 assessment and research organization, recently announced the release of a new playbook for schools and communities recovering from extreme weather events, according to a news release.

  • California K–12 District Finishes Renovations on Multi-Sport Stadium

    The Alameda Unified School District (AUSD) in Alameda, Calif., recently announced the completion of a renovation project on the Encinal Jr. & Sr. High School stadium, according to a news release. The district partnered with Quattrocchi Kwok Architects (QKA) and Bothman Construction on the facility, and funding came from Bond Measure B.

  • Spaces4Learning Launches 2026 Education Design Showcase Awards

    Spaces4Learning has opened submissions for the 2026 Education Design Showcase! The awards program launched in 1999 with the goal of celebrating innovative, practical solutions in the planning, design, and construction of K–12 and higher-education facilities. EDS recognizes new developments that help achieve optimal learning environments, as well as the architecture firms that brought the ideas to life.