Advances for Solar Hot Water and Window Films

04/01/2015 |

GSA tests solutions to drive energy performance

Solar photovoltaic projects

This solar-thermal collector captures excess heat shed by the PV panels and uses it for domestic water heating. PHOTO COURTESY OF GSA

Are you looking for new solutions to squeeze efficiency for your facility?

GSA’s Green Proving Ground (GPG) program allows the agency to test emerging technologies at federal buildings to overcome barriers to adoption. These trial sites shield commercial properties from having to take on the risk of new solutions and yield evidence-based data that will accelerate a product’s energy performance.

Two of the latest evaluations look at technologies that productively harness the sun’s power.

Photovoltaic-Thermal (PV-T) Hybrid Solar Systems: In order to convert solar radiation into electricity, standard photovoltaic systems need plentiful sunlight but shed excess heat in warmer climates. Photovoltaic-thermal (PV-T) hybrid solar systems address this problem by using a solar-thermal collector to capture that wasted heat in a way that is useful for heating domestic water.

GPG commissioned NREL to assess the performance of the nation’s first large-scale PV-T system installed at the Thomas P. O’Neill, Jr. Federal Building in Boston, MA in 2011. The evaluation found numerous lessons in system design, as well as operational best practices and deployment recommendations.

Modeling found that PV-T should target buildings in locations with high utility costs and electric hot water backup, such as Hawaii.

Applied Solar-Control Retrofit Films: Heat gain through windows accounts for 30% of cooling energy demand in U.S. commercial buildings. Applied solar-control films can reduce that demand by reflecting or absorbing solar energy before it reaches interior spaces.

GPG commissioned Lawrence Berkeley National Laboratories to assess the performance of a liquid-applied, spectrally selective absorbing film at the Goodfellow Federal Center in St. Louis, MO in 2012. Using collected results, LBNL modeled the energy performance of both spectrally selective absorbing and reflective films in a range of climates and found potential combined heating and cooling savings of up to 29% with reflective films.

Connectrac® wireways are the new standard for bringing power & communications cable management to all interior applications. Free yourself from core drilling!

Surpass State Energy Requirements with Dual-Cooling Data Center CRAC Technology

See how professionals like you are taking advantage of the highest performing precision cooling system for their computer rooms and data centers, and why Data Aire is fast-becoming the number one choice for facility managers and building owners looking to decrease their energy consumption. 

Data Aire understands how digital technology and data gravity is rapidly impacting and transforming businesses. That’s why they developed ultra-efficient cooling technology to support the most modern (and not-so-modern) data centers.  Learn how One Wilshire in Los Angeles, one of the most advanced carrier hotels today, is surpassing California's strict energy efficiency requirements with Data Aire’s purpose-built system, which provide full-economization for 260 days – almost 72% of the year. That’s a measurable savings! Furthermore, the projected PUE on an annual basis for a full load is at or below 1.2.

Connectrac® wireways are the new standard for bringing power & communications cable management to all interior applications. Free yourself from core drilling!

Surpass State Energy Requirements with Dual-Cooling Data Center CRAC Technology

See how professionals like you are taking advantage of the highest performing precision cooling system for their computer rooms and data centers, and why Data Aire is fast-becoming the number one choice for facility managers and building owners looking to decrease their energy consumption. 

Data Aire understands how digital technology and data gravity is rapidly impacting and transforming businesses. That’s why they developed ultra-efficient cooling technology to support the most modern (and not-so-modern) data centers.  Learn how One Wilshire in Los Angeles, one of the most advanced carrier hotels today, is surpassing California's strict energy efficiency requirements with Data Aire’s purpose-built system, which provide full-economization for 260 days – almost 72% of the year. That’s a measurable savings! Furthermore, the projected PUE on an annual basis for a full load is at or below 1.2.


Related Coverage