University of Pittsburgh announced a LED street life cycle assessment report

Sustainability of the University of Pittsburgh Mascaro Center announced a street lamp replacement assessment report. The study is to compare the LED lamp with the metal halide lamp, high pressure sodium (HPS) lamp and induction lamp technology, and determine the winner of the LED, despite its LED production and recycling and other environmental issues of concern.

The research group's report shows that although LED lamps of the initial investment cost is too high, but the energy consumption LED street less than half, compared with metal halide and high pressure sodium lamp, life is more than 5 times, and can produce more light. The gas induction lamp is another emerging technology, the research team reports on energy saving and efficiency of light, gas induction lamp will exceed LED replacement lamps, but it will have a greater impact on the environment in the process of using.

University of Pittsburgh street lamp evaluation report

Pittsburgh estimates that if the city uses LED street lights, will save $1 million in energy costs, maintenance costs of $700 thousand, will also reduce carbon dioxide emissions.

The research team found that, compared with the consumption of high pressure sodium lamp adopts aluminium shell of energy, LED shell with plastic and metal line, consumed in the production process of the energy is much lower than the energy consumed by high pressure sodium lamp.

For harmful substances, LED bulbs do not contain mercury. Metal halide bulbs contain an average of 15 mg of harmful substances or mercury, while the induction lamp mercury contains an average of 6 mg of harmful substances or mercury.

Pittsburgh will replace the 40000 street lamps with LED lights, and the $9 million gold halogen lamp replacement costs, LED street lights will cost $21 million. But it is expected that the maintenance costs, the report concluded that before the first LED street lamp was replaced, the replacement fee for burned gold halogen lamp will be as high as $44 million.