NJIT taps into solar energy to power new campus center

March 18, 2005

New Jersey Institute of Technology (NJIT) is saving money and energy while also protecting the environment.

The university has installed a 50-kilowatt solar-powered system on the roof of its new campus center. An array of 160 solar panels carpets the roof, converting sunlight into electrical currents.

The panels provide power for the campus center and save the university $40,000 a year in electrical bills. NJIT also received a $215,000 rebate from the N.J. Board of Public Utilities to offset the cost of installing the system.

The solar-powered system prevents 100,000 pounds of carbon dioxide a year from being released into the air. That's how much carbon dioxide would issue from a coal-burning power plant had NJIT not installed the panels. The panels also prevent the release of nitrogen oxide and mercury, two other byproducts of a coal-burning power plant.

"NJIT's solar-unit is the most advanced in the state," said Leon Baptiste, the engineer who installed the system. Baptiste, president of LB Electric, Newark, received an electrical engineering degree in 1991 from NJIT. He also participated in NJIT's Educational Opportunity Program (EOP), which helps minority students earn technological degrees and become engineers. Baptiste is educational chairman of the Metropolitan Electrical League, Long Valley, a non-profit group comprised of some 300 electrical companies. The League offers co-ops and scholarships to NJIT students who study electrical engineering or telecommunications.

Baptiste, of Roxbury, mounted 144 of the framed panels onto the roof. He added 16 upright solar trackers, which rotate in line with the path of the sun to absorb maximum sunlight. The panels, framed with aluminum and stainless steel, can withstand the sun's ultraviolet (UV) radiation. The solar panels, which have a 25-year warranty from distributor TurtlEnergy, Linden, also protect the roof from the ravages of weather and UV radiation.

The solar panels have a silicon surface laced with photovoltaic (PV) cells, said Baptiste. PV cells are devices that convert sunlight to electricity, bypassing mechanical generators. PV stands for photo (light) and voltaic (electricity), whereby sunlight photons free electrons from the silicon surface.

When photons from the sun's rays hit the silicon surface of a solar cell, they are absorbed by the electron of the silicon atom. The supercharged electron now has enough kinetic energy to leave the host atom. The solar cell collects the stream of liberated electrons on its surface, thereby creating a direct current (DC). The DC is fed into an inverter and changed into an alternating current (AC), which when connected to an electric panel, generates electrical power.

Inside the campus center lobby stands a kiosk whose computer screen displays the amount of energy saved by the panels. Since the system was installed last August, the monitor shows that enough energy has been saved to "to power 510 houses in one day," or "enough energy to make 500,000 cups of coffee." The monitor also shows that the panels have prevented 68 pounds of nitrogen oxides and 20,000 pounds of carbon dioxide from being released into the air.

"It's the best solar-electric array I've seen," said Baptiste. "It should be a model for other universities, and businesses, across the state. Solar electricity saves NJIT and taxpayers money while also preserving the environment. It's a win-win for all."

New Jersey Institute of Technology, the state's public technological research university, enrolls more than 8,300 students in bachelor's, master's and doctoral degrees in 100 degree programs offered by six colleges: Newark College of Engineering, New Jersey School of Architecture, College of Science and Liberal Arts, School of Management, Albert Dorman Honors College and College of Computing Sciences. NJIT is renowned for expertise in architecture, applied mathematics, wireless communications and networking, solar physics, advanced engineered particulate materials, nanotechnology, neural engineering and eLearning.
-end-


New Jersey Institute of Technology

Related Solar Cell Articles from Brightsurf:

Theoretically, two layers are better than one for solar-cell efficiency
Solar cells have come a long way, but inexpensive, thin film solar cells are still far behind more expensive, crystalline solar cells in efficiency.

USTC made breakthrough in the Sb2(S,Se)3 solar cell efficiency
USTC developed a hydrothermal deposition method for the synthesis of antimony selenosulfide for solar cell applications.

Oxygen breathes new life into solar cell research
Scientists in Australia and the United States have been able to 'upconvert' low energy light into high energy light, which can be captured by solar cells, in a new way, with oxygen the surprise secret ingredient.

Merging solar cell and liquid battery produces long-lasting solar storage
Combining liquid chemical battery technology with perovskite solar cells has led to a new record in solar energy conversion within a single device.

Merging solar cell and liquid battery produces efficient, long-lasting solar storage
Chemists at the University of Wisconsin-Madison and their collaborators have created a highly efficient and long-lasting solar flow battery, a way to generate, store and redeliver renewable electricity from the sun in one device.

Windows will soon generate electricity, following solar cell breakthrough
Semi-transparent solar cells that can be incorporated into window glass are a 'game-changer' that could transform architecture, urban planning and electricity generation, Australian scientists say in a paper in Nano Energy.

Ultrathin organic solar cell is both efficient and durable
Scientists have succeeded in creating an ultrathin organic solar cell that is both highly efficient and durable.

Layered solar cell technology boosts efficiency, affordability
Researchers from CU Boulder have created a low-cost solar cell with one of the highest power-conversion efficiencies to date, by layering cells and using a unique combination of elements.

Anti-solar cells: A photovoltaic cell that works at night
What if solar cells worked at night? That's no joke, according to Jeremy Munday, professor in the Department of Electrical and Computer Engineering at UC Davis.

Promising discovery could lead to a better, cheaper solar cell
McGill University researchers have gained tantalizing new insights into the properties of perovskites, one of the world's most promising materials in the quest to produce a more efficient, robust and cheaper solar cell.

Read More: Solar Cell News and Solar Cell Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.