Archive for the ‘Energy Efficiency – lighting’ Category

Using LED: global alert!

September 22nd, 2016 | 15 Comments | Posted in Energy Efficiency - lighting
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Nowadays, saving energy is a major concern and the electricity area is no exception to the rule. As electrical engineers, you necessarily apply technologies or devices which aim to improve energy efficiency.

Among the front runners of these technologies stands the LED technology (Light Emitting Diode). It is indeed among the most significant progress of the last years; to the extent that LED lighting is about to become the global standard, coming after classic bulbs that soon won’t be sold by the manufacturers anymore. Notably intended for commercial and industrial buildings, and also for infrastructure (outdoor public lighting), its success lies in the fact that it produces a very efficient luminosity compared to conventional incandescent lamps.

Everybody seems to agree with the fact that LED technology is the future of lighting. However, several electrical installation professionals warned us with 2 major issues highly questioning its use.

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Transformer Routine Test – Measuring The Partial Discharge

March 4th, 2015 | Make a comment | Posted in Energy Efficiency - lighting
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Hi, it’s Steven Mill and today I want to tell you about Measuring The Partial Discharge. Ready?

Transformer routine test is normally conducted to see if there are any partial discharges in the transformer insulation.

What is a partial discharge?

Partial Discharge1

A partial discharge can be described as electrical arcs produced between any of the electrodes in the insulating material of the transformer, which can in turn produce surges between the conductors.

Partial discharges normally occur as a result of little air bubbles left over in the insulating material of the transformer during the manufacturing stage, or at the surface of the insulating media.

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Amazing Single Molecule LEDs

September 18th, 2014 | Make a comment | Posted in Energy Efficiency - lighting
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You all know that our faithful community member Steven Mill loves telling us about new technologies. Well this time let him tell you about LEDs…

Introduction

With the world embarked on a journey to continuous advancements, researchers and scientists around the globe are equally braced up to cater the needs of latest technological expeditions. Through continuous effort, development and research, it has become the manifesto of almost every physicist to bring latest technology in the most portable and conveniently used form to the general population.

Development of amazing single molecule LED’s are a part of the same facilitative project.

What is a LED?

A LED is basically a semiconductor designed in such a way that it has two leads. The distinguishing feature that makes LED stand out from other technically designed semi-conductors is the fact that it emits light. This explains why LEDs are called as light- emitting diodes.

It is also worth mentioning that diodes are specialized electronic components devised in which one lead is anode while the other is known as cathode. Anode serves as the positive terminal whereas cathode is the negative terminal to the diode.

Amazing Single Molecule LEDs

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Energy efficient lighting : CFL vs LED

February 22nd, 2013 | 12 Comments | Posted in Energy Efficiency - lighting
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Artificial lighting was first invented to illuminate a room in times of darkness. But recently, beyond just the purpose of illumination, artificial light is more of being used as an aesthetic element in the modern architecture of many kinds of spaces. Conservation of energy is also one of the main considerations in the modern life of the human race. Artificial lighting accounts to about 15% of the energy consumption of a typical building. It is then obvious that it depends on the supply of energy and this energy – which is mostly of electrical form – should be used efficiently.

Old model bulbs were made of incandescent globes which use a tungsten filament enclosed in an air-tight clear glass case filled with an inert gas. A high electrical current is used to heat the filament until it glows while the inert gas protects the filament from oxidation. This process is estimated to use around 5% of the electrical energy to produce light and the rest is converted to heat.

New electrical bulb inventions mostly concentrate on improving this disadvantage. Two of the most common such electrical bulbs are the Light Emitting Diode (LED) bulb and Compact Fluorescent Light (CFL) bulb. These new-tech bulbs are designed to replace the incandescent bulb in form and function but with a much improved efficiency of converting electrical energy to light. However the use of any of the two has its own pros and cons.

Typical incandescent, CFL and LED bulbs (as they appear from left to right)

Typical incandescent, CFL and LED bulbs (as they appear from left to right)

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How green are Compact Fluorescent Lights (CFLs)?

April 27th, 2009 | 40 Comments | Posted in Energy Efficiency - lighting, Energy Efficiency - news
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Back on this  subject…

fluorescent lightSome countries and states like Australia, California, and the European Union plan in the near future to ban incandescent light bulbs, to the benefit of  Compact Fluorescent Lights, Lamps (CFLs).
There are two main advantages given by Fluorescent bulbs (CFLs) : …

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