Advantages of fluorescent lamps. Scheme, description

ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
Free library / Electrician

Fluorescent lamps. Advantages of fluorescent lamps. Encyclopedia of radio electronics and electrical engineering

Free technical library

Encyclopedia of radio electronics and electrical engineering / Fluorescent lamps

The widespread use of LL is due to the fact that they have a number of significant advantages over conventional incandescent lamps:

firstly, this is high efficiency, the efficiency is 20-25% (for incandescent lamps about 7%), and the light output (i.e., the number of emitted lumens per unit of power consumed) lies in the range of 70-105 lm / W (for incandescent lamps 7- 12 lm/W).
Secondly, long service life - up to 20000 hours (for incandescent lamps -1000 hours and strongly depends on the supply voltage).

It is known that optical radiation (ultraviolet, visible, infrared) has a significant physiological and psychological effect on a person (his endocrine, vegetative, nervous systems and the whole organism as a whole), mostly beneficial.

Daylight is the most useful. It affects many life processes, metabolism in the body, physical development and health. But active human activity continues even when the sun hides behind the horizon. Daylight is being replaced by artificial lighting.

For many years, only incandescent lamps were used (and are used) for artificial lighting of housing - a thermal light source, the spectrum of which differs from the daytime one by the predominance of yellow and red radiation and the complete absence of ultraviolet radiation.

In addition, incandescent lamps, as already mentioned, are inefficient, their efficiency is 6-8%, and their service life is very short - no more than 1000 hours. A high technical level of lighting with these lamps is impossible. That is why the appearance of LL turned out to be quite natural - a discharge light source that has a 5-10 times greater luminous efficiency than incandescent lamps, and 8-15 times longer service life.

Having overcome various technical difficulties, scientists and engineers have created special LL for housing - compact, almost completely copying the usual appearance and dimensions of incandescent lamps and at the same time combining its advantages (compactness, comfortable color reproduction, ease of maintenance) with the economy of standard LLs.

On fig. 2.3 shows a comparison of a compact LL with an incandescent lamp. As can be seen from the thermographic picture, an incandescent lamp (left) converts 92-94% of electricity into heat and only 6-8% into light, while a compact fluorescent lamp (right), giving the same luminous flux, consumes 80% less electricity .

Advantages of fluorescent lamps
Rice. 2.3. Comparison of the warm field of a compact fluorescent lamp and an incandescent lamp

Due to their physical characteristics, LLs have one more very important advantage in front of incandescent lamps: the ability to create light of various spectral composition - warm, natural, white, daylight, which can significantly enrich the color palette of the home environment.

It is no coincidence that there are special recommendations for choosing the type of LL (color of light) for various applications (they will be given below).

Availability controlled ultraviolet in special lighting and irradiation lamps allows solving the problem of preventing "light starvation" for urban residents who spend up to 80% of their time indoors.

Example. BIOLUX-type LLs manufactured by OSRAM, whose emission spectrum is close to the sun and saturated with strictly dosed near ultraviolet, are successfully used both for lighting and for irradiating residential, administrative, and school premises, especially when natural light is insufficient.

And special tanning LLs of the CLEO type (by PHILIPS) are intended for indoor sunbathing and other cosmetic purposes.

When using these lamps it should be rememberedthat, to ensure safety, the instructions of the manufacturer of the irradiation equipment must be strictly followed.

Thus, LL, which provide a lot of light in the apartment, thereby preserve vision, reduce fatigue, increase efficiency and cheer up; in addition, the spectral composition of their radiation easily varies in color. All this makes such lamps exceptionally attractive to the consumer.

Author: Koryakin-Chernyak S.L.

See other articles Section Fluorescent lamps.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Machine for thinning flowers in gardens 02.05.2024

In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

Advanced Infrared Microscope 02.05.2024

Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>

Air trap for insects 01.05.2024

Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>

Random news from the Archive

The cheapest tablet 16.04.2012

The Indian electronics firm Quad in Hyderabad has launched the world's cheapest tablet computer, the Aakash, developed in collaboration with British specialists. The device runs on the Android operating system, has a processor with a frequency of 366 megahertz, 256 megabytes of RAM and a seven-inch touch screen, connects to Wi-Fi networks and cellular telephone networks.

Built-in memory is two gigabytes, it is expandable microSD cards up to 32 gigabytes. The name "Aakash" means "sky" in Hindi.

Although the cost of the computer is $50, in India it will sell for $35: the selling price is subsidized by the government so that schoolchildren and students from poor families can purchase this tablet.

Other interesting news:

▪ The most powerful system on a chip

▪ New miniature chips for battery maintenance

▪ The capacity of optical discs will dramatically increase

▪ Flexible Solar Panel for Boats

▪ New combat aircraft Airbus

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the Electrician website. PUE. Article selection

▪ article by Stanislas de Boufleur. Famous aphorisms

▪ article What is caffeine? Detailed answer

▪ article Machinist compressor ZIF-55. Standard instruction on labor protection

▪ article Light machine on the chip KR1533IR22. Encyclopedia of radio electronics and electrical engineering

▪ article Spectacular card transfer from one hand to another. Focus Secret

Leave your comment on this article:

Comments on the article:

Alexander
Theoretical efficiency about 13% of incandescent lamps (course "Electric lighting"). Realistically about 4%. Fluorescent lamps according to this indicator are about 16% - depending on the design. Unfortunately, these lamps only imitate sunlight, as they have a "linear" spectrum, as opposed to continuous sunlight. Not all doctors are delighted with such coverage (I mean real specialists). Yes, and restrictions on labor protection did not appear out of nowhere. With incandescent lamps and sufficient illumination, you get tired all the same less. Think in what situation what to apply.

All languages of this page

Home page | Library | Articles | Website map | Site Reviews