Low-energy usage makes new 'blue lights' special

3. července 2013 v 6:01 |  Led ceiling light
On this campus boasting of red, you'll see a slew of new blue lights that green the environment.

To further promote energy conservation, Cornell has been switching all of its approximately 120 campus-safety "blue lights" this summer from energy-hogging incandescent to a light-emitting diode (LED) technology, which sips power at one-tenth the rate.

With incandescent technology - as ancient as inventor Thomas Edison - the metal halide bulbs enjoyed a typical lifespan of two years at best, and the bulb usually dimmed significantly the second year. LED technology is brighter and can be seen in daylight. In addition the new lights are easier to maintain and have a 100,000-hour lifespan.

"The new fixtures are expected to last over 10 years before needing maintenance, and the light level will be nearly 'new' the whole time," said Lanny Joyce, director of energy management in Facilities Services. "Being that these light fixtures provide a beacon to safety phones directly connected to Cornell Police for any campus emergency, the added visibility and reliability the LED provides - along with the huge reduction in electricity usage - are quite amazing.

Mark Howe, senior energy engineer, says the payback in energy costs is less than three years. The old 150-watt bulbs used 1,300 kilowatt hours each annually, at a cost of $100 per bulb per year. Systemwide, it cost the university about $12,500 in electricity. The new 15-watt LEDs have reduced energy usage by 90 percent, and now the energy cost will be $1,200 a year. Beyond energy savings, these blue lights get green in other ways, since they are mercury- and ultraviolet-free, and Restriction of Hazardous Substances compliant.

Campus blue lights indicate a special telephone directly connected to the Cornell Police. Find a blue light, and you'll find a phone. If you are lost, having car problems, want to report a suspicious incident or a medical emergency, or for any other kind of assistance, lift the receiver or push the button.

The team working on the project includes: electric shop superintendent Jim O'Brien; assistant superintendent Heather Mulks; foreperson Nate Deeley; electricians Dave Pawelczyk and Jon Ryan; project engineer Brian Watson; Howe and Joyce.

A new project is beginning in Bristol this month which will allow people to converse with objects throughout the city via text message, reports The Guardian. The project encourages visitors and visitors to communicate with objects such as lamp posts by using repair numbers found on the objects as SMS codes.

Once they wake up the object, it will then ask a series of questions via text messaging and then the next person to sign in with the object will learn about previous replies, creating a conversation.

The project has refuelled the idea of an intelligent home, in which separate objects fitted with the relevant sensors can be formed into useful information networks. This could mean that switching on a bedside lamp in the morning would trigger something else to start such as a coffee machine or kettle.

Technology is already becoming increasingly prevalent in the lighting industry, with new intelligent LED dimmable being linked to smartphones to create optimum lighting via applications or turning on a set times.
 

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