Introduction White light LEDs have drastically improved in intensity, color rendering, power efficiency and cost effectiveness in recent years. Not only do they consume far less power for the same luminous output (30 – 40 %) but have much longer life and minimal maintenance during their life time (50,000 hours). It has been estimated that [...]

After knowing that plants can also be luminous and can give light, people all over the world are now thinking and planning and discussing to use these light tree and plants instead of street lights. In many countries of the world 20 to 25 percent of the power is used for lighting purposed and mainly [...]

Street Lighting Replacement Solutions for Islamabad Financial Viability of LED Street Lighting. Proposed LED Street light solution for Islamabad To assess the financial viability of LED street lighting the entire lifetime cost of both LED & HPS technologies need to be calculated and compared so that the payback time and financial viabilities can be measured. [...]

LED Street light is low energy light source which is very common these days. It is very effective in terms of energy consumptions. LED light is low energy lights with high lumen, where 1 lm = 1 cd·sr. normally LED lights claim that they have very high efficiency. The per watt lumen is 40 that means [...]

Solar panels or photovoltaic cell arreys, as they are called, are the most convenient  energy convertors as of today. However due to the high cost of invertors and batteries they can be hardly feasible. Due to the intermittent nature of Solar Energy, storage plays a very vital role in any Solar Energy solution. While solar panels have [...]

White light LED s and LED Lights have drastically improved in intensity, color rendering, power efficiency and cost effectiveness in recent years. Not only do they consume far less power for the same luminous output (30 – 40 %) but have much longer life and minimal maintenance during their life time (50,000 hours). It has [...]

By Peter Whoriskey But with the dawning of what enthusiasts hope is an era of electric cars, federal regulators are struggling to come up with a definition of auto efficiency for the next generation of technology. This year, two major auto manufacturers, General Motors and Nissan, will bring to market cars that plug in. “There’s no [...]

Launched in 2000, the BMW X5 has been a pretty strong seller for the German automaker. For 2011, BMW says that innovative news design elements and powertrain upgrades resulted in over 4,000 new parts created by BMW designers and engineers. Design wise, the 2011 X5 gets some inspiration from the new BMW X5 M with [...]

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