Energy-saving light bulbs
During this year will be permanently retired common bulbs, those with a small coiled tungsten filament inside the bulb that work.
From 1 St September 2012 will cease production of even those from 25 to 40 W that were the last remaining in circulation.
The progressive banning across Europe of these bulbs, considered too energy intensive industries, began in 2009 with the end of production of those from 100 W and will end in 2016, when he will terminate the production of low-efficiency, which have a working principle is similar to incandescent ones, but have a small amount of halogen bulb in the gas mixture.
The European Union has estimated that replacing all the old generation and new bulbs, you can save up to 40 billion KW/h per year, saving 15 million tonnes of Co2.
This results in a reduction of energy consumption nearly 80%.
Of course the initial cost of energy-saving light bulbs is larger than incandescent ones, but pays for itself in a few years, whereas they also lasts much longer.
Energy-saving light bulbs and health hazards
Low power lamps therefore represent an ecological choice, but there were also warnings related to their use, mainly due to the presence of traces of mercury, toxic heavy metal and polluting, that could be harmful in case of accidental breakage.
The European Commission, although not dangerous amounts of mercury in light bulbs, has determined that the mercury content present will switch from 5.0 to 2.5 micrograms per cubic meter by 2013.
When in doubt, however, the choice could fall on B22 LED bulbs that is mercury free.
Also, like many other products with a high energy content of last generation, such as cell phones and microwave ovens, low consumption lamps emit a certain amount of electromagnetic waves.
This is not a large amount, but in this case you should keep a distance of at least 30cm from the appliance in case of prolonged exposure.
In fact, at present the science hasn’t proven that electromagnetic waves have adverse health effects, but it is certain that causes physiological effects such as the rise in temperature or a headache.
Characteristics of energy-saving light bulbs
To choose between low-energy light bulbs on the market must be taken both to the technical characteristics of the product to its performance too bright, so as not to distort the quality of natural light.
For example, to have the same luminous efficiency of a 40-watt incandescent bulb,you can choose:
- -high efficiency halogen bulb 28 W;
- -a compact fluorescent lamp 8 W;
- -an Led lamp from 8 W.
To choose a low-energy bulb you have to learn to read the label, so you learn to distinguish the characteristics.
It shows the luminous efficiency class, which defines the energy class as it does for home appliances and it indicates in lumens per Watt, and other parameters such as the luminous flux, which is measured in lumens, power, which is measured in Watts and the rated average duration in hours.
Two other parameters must be considered to assess the quality of light.
The first is the color temperature, which indicates in K, and measuring the colour of light bulbs that can be warm white, neutral or cold.
The second is the color rendering index (Ra or Irc) that indicates the degree to which the artificial lighting makes it possible to perceive the natural colors.
Stated as a number between 0 and 100 and, as this number is large, the more the color rendering will approach the reality.
Do not use bulbs with an index less than 85 because it has been shown that, in the long run, can create pscio and physical discomforts.
Remember that energy-saving lamps, once dead, they should be disposed of at the ecological Islands.