Tubes Deliver Daylight, Help Cut Energy By 23

light everywhere, and some of the classrooms didn’t have any exterior windows. We knew right away that daylighting would be a big part of this project.”

“We decided to expose the tubes of the daylighting systems in the lobby as a way to celebrate the sustainable aspects of the Center for Environmental Sciences. Students and faculty wanted them to be very visible so they could also serve as a teaching tool on sustainability. There are even signs posted throughout the building that point to the various green aspects,” Carver said. “The faculty was thrilled with the outcome and so was the administration and facilities-management team.”

Additionally, the space uses solar panels, high-efficiency lighting (for non-daylight hours), occupancy sensors, and real-time energy monitoring. The entire renovation was 21,000 sq. ft. within the 47,500-sq.-ft. Carr Hall at a cost of $784,000. The energy savings of 23% will result in expected annual savings of $13,000, according to DOE estimates.

The project was designed to earn LEED Gold Certification for Commercial Interiors and to create a sense of community and collaboration. The Richard J. Cook Center for Environment Science, as well as all of Carr Hall, is LEED Gold Certified.

Allegheny College was recognized in May 2014, by the DOE for its achievements in the Better Buildings Challenge and for reducing energy intensity by 7% across its entire building portfolio. The announcement was made at the National Better Buildings Summit in Washington. Better Buildings Challenge partners are demonstrating progress toward achieving 20% energy savings in 10 years, with annual energy savings of $300 million.

“By committing to cut energy use by 20%, Better Buildings Challenge partners are demonstrating how businesses and organizations are reducing our nation’s energy bill, creating American jobs, and protecting the environment,” said David Danielson, assistant secretary for energy efficiency and renewable energy at the DOE. “With commitments representing more than 3 billion square feet of floor space, these partners are leading the way to a cleaner energy economy.”

Allegheny College was among seven colleges and universities nationwide to join the Better Buildings Challenge when it was first announced by President Barack Obama in 2011, and its continuing commitment to energy efficiency and sustainability is demonstrated by the renovation of Carr Hall. CBP

DATA CACHE

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For more information on daylighting at Allegheny College, visit For more information on daylighting at Allegheny College, http://sites.allegheny.edu/news/2012/10/12/richard-j-cook- http://sites.allegheny.edu/news/2012/10/12/richard-j-cook- center-for-environmental-science-is-dedicated-in-ceremony-at- allegheny-college

For a video on sustainability at Allegheny College, visit For a video on sustainability at Allegheny College, visit http://www.planetforward.org/idea/allegheny-college-deep- http://www.planetforward.org/idea/allegheny-college-deep- infrastructure-sustainability

For more information on daylighting and Solatube products, visit For more information on daylighting and Solatube products, visit http://solatube.com.

Visit the ACUPCC website to lean more about the Presidents’ Climate Commitment program: http://www.presidentsclimatecommitment.org

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Thomas Jefferson Univ. and its affiliated Jefferson Univ. Hospitals occupy more than 20 buildings, including the Dorrance H. Hamilton building, on a sprawling 13-acre campus in Center City Philadelphia.

LEDs Lighten University Energy Load

Retrofit solution that doesn’t look like a retrofit saves energy and maintenance.

Occupying 4 million sq. ft. of floor space across more than 20 buildings on a sprawling 13-acre campus in Center City Philadelphia, as well as other nearby locations, the historical Thomas Jefferson Univ. and its affiliated Jefferson Univ. Hospitals are highly regarded for superior quality, technologically advanced, and compassionate medical care. With the help of a recent lighting upgrade involving highly efficient and easy-to-install LED fixtures from LumenOptix, Montgomeryville, PA, the institution can also rest assured that its facility operations meet similar high standards for energy efficiency, low maintenance, and sustainability.

Overseeing facilities that house cutting-edge research and teaching capabilities within 12 specialized areas, as well as state-of-the-art medical equipment including MRI and gamma knife technology, Thomas Jefferson Univ. energy manager Randy Haines, CEM, CLEP, has long been dedicated to ensuring that operations run as smoothly and as energy efficiently as possible for the many faculty, students, and patients who occupy the space. In that regard, lighting has offered a fertile field of upgrade possibilities. “I’m always looking for opportunities to modernize our systems and have upgraded the lighting in a number of 24/7 areas over time, such as our elevator cabs and stair towers,” Haines said.

But another even more high-profile opportunity presented itself in 2013, when the existing lighting technology in the lobby of the university’s glass-enclosed Dorrance H. Hamilton building, built in 2007, began to reach its natural end-of-life. Lit by a series of two-lamp, 26-W plug-in compact-fluorescent lamps (CFLs), “all of the lamps in the lobby were starting to fail and, with LED prices coming down and helping the economics to make sense, we realized that we could replace an entire fixture with a new LED solution for not much more than the cost of replacing just the lamp and ballast components,” Haines explained.

The 15-ft. height of the atrium ceiling was another consideration that made LED technology appealing. With a 12,000-hr. life, which equaled just one to two years of operation within a 24/7 operating environment, the existing CFLs required frequent replacement. “Our maintenance crew was constantly replacing burned-out CFLs, and this wasn’t the simplest of tasks. We needed to use a high-reach apparatus to access the fixtures, so the process of replacing a lamp and/or ballast took our team almost an hour per fixture. Because of various classes and events being held in the lobby, it was often hard to schedule time to perform these change-outs without disrupting operations,” he said. As a result, Haines wanted a solution that would provide optimal lighting, reduce energy consumption and costs, and simplify maintenance within the 66-fixture atrium application.

AN OPTIMAL SOLUTION Tasked with recommending the most appropriate LED technology for the Hamilton Building’s lobby, Joe McGowan, veteran sales representative with Illuminations Inc., an industrial and commercial lighting manufacturers’-representative firm located in West Chester, PA, knew the LRD (LED Retrofit Downlight) luminaire from LumenOptix would serve the facility’s many needs well.

Because the lobby’s lighting incorporated a sophisticated Lutron Electronics, Coopersburg, PA, dimming system that enabled light levels to be controlled for dinner events at night, “we immediately contacted LumenOptix, who assured us that they'd already configured their system for compatibility with many of the market’s most popular and complex controls and dimming systems, especially Lutron’s,” McGowan said. Upon confirming compatibility, “we proceeded to install another three samples so that we could see what the light would truly look like within a square pattern. Following various foot-candle readings to ensure that the lighting was consistent at the floor level, the team felt confident in making the investment.”

The upgrade was completed and, as specified, provided the same 2,000 lumens of light output as the previous CFL fixtures while using half the energy. “Installation was simple; our crew members worked right below the ceiling tile and were able to wire and pop in each new fixture within minutes,” Haines said. “And with a rated life of 50,000 hours, over four times longer than our previous technology, we look forward to 5 to 7 years of continuous and maintenance-free operation with the new LED fixtures.”

A modular LED retrofit solution that enables a downlight of any make, model, or size to be upgraded in just minutes, the “LED Retrofit Downlight luminaire was a perfect fit for the Hamilton Building’s atri

Below. When the CFLs in the lobby of the glass-enclosed Hamilton Building, built in 2007, began to fail, they were replaced with LED technology.

Above. A retrofit that doesn’t look like a retrofit, the replacement LEDs helped to maintain the look and feel of the lobby, at the same time using half the energy of the previous lighting.