How does energy saving lamps work, and why can they save electricity?

The energy-saving lamp is actually a kind of compact, fluorescent lamp with ballast, when the energy-saving lamp is ignited, the lamp filament is heated by the electronic ballast, the filament begins to emit electrons (because some electronic powder is coated on the filament), the electron collides with the argon atom filled in the lamp, the argon atom obtains energy after the collision and hits the mercury atom inside, the mercury atom jumps to produce ionization after absorbing energy, the plasma state is formed in the lamp, and the voltage at both ends of the lamp is directly conducted through the plasma state and emits ultraviolet rays, Ultraviolet excitation phosphor luminescence, because the temperature of the filament is about 1160K when the fluorescent lamp is working, which is much lower than the working temperature of the incandescent lamp 2200K-2700K, so its life is also greatly improved, reaching more than 5000 hours, because it uses an electronic ballast with high efficiency, and there is no current thermal effect like the incandescent lamp, the energy conversion efficiency of the phosphor is also very high, reaching more than 50 lumens per watt, so it saves electricity.

The so-called electronic powder refers to the metal powder such as thorium and cesium that has a high melting point and low work of escape (electrons can be emitted by absorbing lower energy).

Energy-saving lamps emit electrons, and electrons meet phosphors to emit light, so that the light consumption is smaller than that of using filament heating under the same brightness, so as to achieve the effect of energy saving.

Why energy-saving lamps can save electricityAs we all know, there are various types of lamps, such as commonly used incandescent lamps, energy-saving lamps, LED lamps, they are not only different in name, but also in their respective properties and characteristics. So, do you know why energy-saving lamps can be saved?

The luminous limit of an incandescent lamp is more than 20 lumens per watt, even if it is 30 lumens.

Everyone knows that 80% of the electrical energy of incandescent lamps is converted into heat.

30 lumens* (1-80%)) 6 lumens watts.

The luminous limit of energy-saving lamps is 50 lumens per watt.

50 lumens (1-80%)&pide;1 5) = 50 lumens watts.

Compare: with the same 1 watt of electric energy, the energy-saving lamp emits 8 times the light of the incandescent lamp, then under the same brightness, the energy-saving lamp consumes 1 8 of the incandescent lamp, (this is the theoretical value) so it saves energy.

The official name of the energy-saving lamp is the rare earth trichromatic compact fluorescent lamp, which was born in the 70s of the 20th century in the Netherlands by Philips. Under the premise of achieving the same light energy output, this light source only needs to consume 1 5 to 1 4 of the electricity consumption of ordinary incandescent lamps, so that it can save a lot of lighting power and costs, so it is called energy-saving lamps.

1. LED bulbs are more power-efficient than energy-saving lamps.

2. The luminous efficiency of halogen powder energy-saving lamps is only 30-40lm w, and the luminous efficiency of tri-color energy-saving lamps will be higher than that of halogen powder energy-saving lamps, about 40-60lm w (different brands of products, different quality, and different luminous efficiency, Philips energy-saving lighting efficiency is about 60lm w). However, the luminous efficiency of LED is much higher than that of energy-saving lamps, and the current technical level has generally reached 90-100lm W.

3, LED (light-emitting-diode Chinese meaning light-emitting diode) is a semiconductor that can convert electrical energy into visible light, which changes the principle of incandescent lamp tungsten luminescence and energy-saving lamp three-primary color powder luminescence, and the use of electric field luminescence. When LED is energized and emitted, 10% of the electrical energy can be converted into light energy, while the conversion efficiency of energy-saving bulbs is only 7%-8%, which shows that to achieve the same lighting effect, LED lamps are more power-saving than energy-saving lamps It is obvious.

LED lighting fixtures are currently the most energy-saving, but different LED lighting also has different energy-saving performance, and the selection of better LED lighting can really save power.

First, we must look at the brightness and the color. P.S. does not meet your requirements.

The second is brightness. The method is compared with ordinary energy-saving lamps, that is, how many watts of brightness can be topped by the LED lamps that you are satisfied with the brightness.

The third is to compare power. How many watts can the LED lights we buy save compared to ordinary lights?

Fourth, to calculate the economic account, what is the annual operating cost of the LED lights we purchased. What is the annual operating cost of ordinary lamps and energy-saving appliances of the same brightness.

Fifth, compare the lifespan, how many ordinary bulbs to replace in twenty years, how much it costs, etc. How much is the electricity cost saved in 20 years.

In terms of power saving, of course, it is turned on when you use it, and you can turn it off when you don't use it, and you haven't heard that the lights that are turned off are still using electricity!

However, there are two situations to consider the life of energy-saving lamps:

1.Conventional circuit energy-saving lamps are used.

Traditional energy-saving lamps only use two transistors as electronic ballasts, and the power factor is low; And in order to save costs, no special protective measures have been initiated. The transient surge generated when the power is switched on and off will cause damage to the transistor, so it is not suitable for frequent switching of energy-saving lamps. You may need to use it within 20 minutes, so you don't have to turn it off.

Although it costs a little electricity, it is better to switch less than 10 times a day without changing energy-saving lamps for the old time.

2.Use of new energy-saving lamps.

Energy-saving lamps are also constantly being improved to cope with the threat of aggressive LED lighting. The new electronic ballast is adopted.

Driven by integrated circuits, it not only increases the power factor of energy-saving lamps to more than 95%, but also is equipped with a soft-start circuit where the filament is heated first and the high voltage is applied later. Such protection measures can make the new energy-saving lamp switch more than tens of thousands of times, and it can basically be guaranteed for two years. This is no problem to switch on and off 50 times a day.

The energy-saving lamp is turned on once, which is equivalent to 5 minutes of normal lighting, including the time it will be turned on slowly. Therefore, in terms of electricity bills, do not use it for more than 5 minutes, turn off the lights to save electricity.

If you ask: save money by leaving the energy-saving lamps on all the time? Or is it more economical to close without it?

It depends. If the energy-saving lamp is turned on once, it will affect the life of the lamp, which is equivalent to about 30 minutes of normal lighting.

The lamp life is 8000 hours, the lamp is 30 yuan, the electricity bill is yuan per kilowatt-hour, and the lamp is 20 watts.

The life span is 1 hour, and the fee is 1 time.

Electricity costs 1 hour, 7 minutes electricity costs.

Therefore, the life of the switch is worth 7 minutes of electricity.

If the lamp** is higher than 30 yuan and the lamp power is less than 20 watts, the more time the life will be used to offset the electricity bill.

Turn on the light to use electricity, add the impact of the light on the life, energy-saving lamps do not need to be used within 12 minutes, it is best not to turn off.

In daily life, it is best not to turn off energy-saving lamps within 15 minutes.

If you just leave it for twenty or thirty minutes, it is still good to turn on, energy-saving lamps (including fluorescent lamps, etc.) are not suitable for frequent starting, it is not like incandescent bulbs, and it cannot be dimmed. I hope the simple answer will make you understand!

On the other hand, power saving is compared to other power saving during your normal electricity consumption time, and it cannot be turned on and off for a while.