Comparison of electricity costs for high pressure sodium lamps and LED lamps

Illuminance lx, is the lumens lm per square meter, lx = lm (mm).

Save electricity costs, mainly look at the light effect of the lamp lm w, that is, how many lumens can be emitted by 1 watt of electricity. The light efficiency of LED lamps is about 2 times that of high-pressure sodium lamps.

From the light efficiency of the lamp to the actual illumination, it is also related to the installation height of the lamp. If the two lamps are installed at the same height, the LED lamp can save half the electricity bill compared to the high-pressure sodium lamp.

However, the installation height of the general factory should be more than 5 meters to ensure a certain space. At such a height, to meet 300lm, the LED light needs almost 3 watts per square meter.

At present, the disadvantages of LED lights are that they are expensive, and the power is not large, and the ordinary ones are only 3 watts. If the factory of 1000 square meters, the installation height is 5 meters, it needs to meet the needs of 300lm, and 1000 pieces of LED lights with 3 watts.

To put it bluntly, at present, LED lamps are not suitable for general factories, and LED technology development is still to be achieved.

High-pressure sodium lamp, poor color rendering. Factories where the product has something to do with the color should not be used.

Using LEDs will definitely save you money on electricity bills. It's just that LED is currently on the high side, and from the input-output ratio, it is not cost-effective to use LED for high-power lighting. Just like with solar cells now, it takes about 20 years to save the cost of mains, but the 20-year life of the solar system should be over.

High pressure sodium lamp HGND street lamp power: 150W, 250W, 400W.

At a height of 10 meters, 160W LED street lamps can replace 200W high-pressure sodium lamps (presumptive according to the degree of sensory effect evaluation). If compared by luminous flux, the luminous flux of a 200W high-pressure sodium lamp is higher than that of a 160W LED lamp.

The following connections are the measured results of Century Crystal Source:

It can replace a 540W high-pressure sodium lamp.

There is no problem at all with a 160W LED lamp instead of a 450W high-pressure sodium lamp.

1. The color rendering index is not the same.

The luminous color of high-pressure sodium lamp is yellow, and the color temperature and color rendering index are relatively low. The color rendering index of the yellow high-pressure sodium lamp is only about 20. However, the color temperature of LED street lamps can be selected between 4000-7000K, and the color rendering index is also above 80.

2. The starting time of the light source is different.

The bulb of high-pressure sodium lamp takes a long time to start, and a certain time interval is required when it is turned on again. Generally, it takes about 5-10 minutes to reach normal brightness after powering on, and it takes more than 5 minutes to start again. The LED street light does not have the problem of long start-up time, can work at any time, and is easy to control.

3. The utilization rate of light source is different.

In the case of high-pressure sodium lamps, the utilization rate of the light source is only about 40%, and most of the light must be reflected through the reflector before it can be irradiated to the designated area. The utilization rate of LED street light source is about 90%, most of the light can be directly irradiated into the designated area, and only a small part of the light needs to be reflected to achieve.

It's different in many ways.

One light source is LED light source, and the other is energy-saving lamp or metal halide lamp as the light source.

There is also a completely different power consumption.

The essential difference is that LED street lights are more advanced and more expensive.

LED lamps are energy-saving, have a long service life, and belong to cold light sources.

Brightness, energy saving, and longevity of use!

LED street lamps have higher energy efficiency and longer service life than ordinary high-pressure sodium lamps, so they have obvious advantages in terms of cost savings. The following will analyze the cost savings of 30 watt LED street lamps compared with ordinary high-pressure sodium lamps from three aspects: energy efficiency, life and maintenance costs.

First of all, in terms of energy efficiency, LED street lamps have higher energy efficiency than ordinary high-pressure sodium lamps. The energy efficiency of ordinary high-pressure sodium lamps is usually between 80-100 lumens watts, while the energy efficiency of LED street lamps can reach 100-150 lumens watts. Taking 30 watts as an example, the light efficiency of LED street lights can reach 3000-4500 lumens, while the light efficiency of ordinary high-pressure sodium lamps is only 2400-3000 lumens.

Therefore, LED street lamps require less power under the same lighting effect, which saves electricity consumption and electricity bills.

Secondly, in terms of life, the life of LED street lamps can usually reach 50,000-100,000 hours, while the life span of ordinary high-pressure sodium lamps is only 10,000-20,000 hours. This means that in the same use time, the life of LED street lights is 2-5 times that of ordinary high-pressure sodium lamps. The long life of LED street lights can reduce the frequency of replacement of luminaires and maintenance costs, thus saving maintenance costs.

Finally, in terms of maintenance costs, LED street lamps have lower maintenance costs than ordinary high-pressure sodium lamps. LED street lights have a long life and are not easily damaged, so they are less frequent to repair and replace. However, ordinary high-pressure sodium lamps have a short lifespan, are easily affected by the external environment and vibration, are easily damaged, and need to be repaired and replaced frequently.

LED street lights have low maintenance costs and can save a lot of maintenance costs.

To sum up, 30 watt LED street lights have obvious advantages in terms of energy efficiency, life and maintenance costs compared to ordinary high-pressure sodium lamps, which can save a lot of money. LED street lights are more energy efficient, which can save electricity consumption and electricity bills; LED street lights have a longer lifespan, which can reduce the frequency of replacing lamps and maintenance costs; The maintenance of LED street lights is low, which can save a lot of maintenance costs. Therefore, choosing LED street lights is an affordable and eco-friendly choice.

The 30-watt LED lamp is indeed much less than the high-pressure sodium lamp of the general trembling barrage, because the brightness of the LED is higher than that of the same model of eggplant, and the brightness of the sodium balance lamp is average, and the cost can save dozens of dollars.

30wled light.

Equivalent to 75W high-pressure sodium lamp.

The minimum power of a single high-pressure sodium lamp is 150W, which is equivalent to a 120W LED lamp. 120W 150W LED lamp is equivalent to 400W high-pressure sodium lamp, 90W 120W LED lamp is equivalent to 250W high-pressure sodium lamp, and 60W 90W lamp is equivalent to 50W high-pressure sodium lamp.

The life of ordinary high-pressure sodium lamps is about 3000-5000 hours, while the life of LED street lamps can reach 30000-50000 hours, and if the technology is more mature, the life of LED street lamps can reach 100,000 hours.

A high-pressure sodium lamp is a type of lighting device, and its "high voltage" refers to its higher operating voltage. Normally, high-pressure sodium lamps have a voltage of 220V to 240V and a frequency of 50Hz, but their output voltage is usually between 1000V and 2000V.

A high-pressure sodium lamp uses high pressure to light a gas discharge tube inside it, and one of the electrodes is bridged to transfer heat, resulting in sodium vapor and an arc discharge inside the bulb, which excites yellow light. High-pressure technology can make high-pressure sodium lamps work more efficiently and provide higher brightness and longer life.

Since high-pressure sodium lamps require the use of high-voltage current, the necessary safety measures should be taken during installation and maintenance to avoid electric shock and other hazards. Normally, only specially trained and certified personnel are allowed to carry out the installation, commissioning and maintenance of high-pressure sodium lamps.