1, Power range and common specifications of high-pressure sodium lamp street lights
The power range of high-pressure sodium street lamps is usually between 70 watts and 400 watts, and the selection of this range is aimed at meeting different road sections and lighting needs. There are several common specifications within this power range, such as 70 watts, 150 watts, 250 watts, and 400 watts. These high-pressure sodium lamps with different power levels can provide varying degrees of illumination intensity to adapt to various scenarios ranging from residential areas, sidewalks to major transportation arteries and squares.
70 watt high-pressure sodium lamp street light: suitable for residential areas, sidewalks and other places with low lighting requirements. Its soft light can create a warm and comfortable lighting environment.
150 watt high-pressure sodium lamp street light: commonly used in areas with moderate lighting needs such as secondary roads and commercial districts. Its lighting effect is good, which can meet basic lighting needs while also balancing energy conservation and environmental protection.
250 watt high-pressure sodium lamp street light: mainly suitable for places with high lighting requirements such as main roads and highways. Its strong light and wide illumination range ensure the safety and comfort of night driving.
400 watt high-pressure sodium lamp street light: commonly used for lighting in large public places such as squares and sports venues. Its lighting effect is excellent, able to illuminate the entire venue and create a bright and atmospheric atmosphere.
2, The lighting effect and advantages of high-pressure sodium lamp street lights
High pressure sodium lamps have become a leader in the field of urban lighting due to their high efficiency and unique luminous characteristics. The lighting effect is mainly reflected in the following aspects:
Efficient luminous efficiency: The luminous efficiency of high-pressure sodium lamps is usually between 130-140 lumens per watt (Lm/W), far higher than other traditional light sources. This means that under the same lighting requirements, high-pressure sodium lamps can consume less electricity and achieve higher lighting efficiency.
Good color rendering: Although the color rendering index (Ra) of high-pressure sodium lamps is relatively low, usually between 2325, the light emitted by them is yellowish, which is effective in seeing the road conditions at a distance of about 90160 meters ahead. Especially in foggy and dusty air conditions, the lighting effect of high-pressure sodium lamps is more significant.
Long lifespan: The average service life of high-pressure sodium lamps is usually between 3000 and 24000 hours, depending on various factors such as brand, quality, application environment, and maintenance conditions. High pressure sodium lamps produced by well-known brands such as Philips have a relatively long service life due to the use of advanced manufacturing technology and high-quality materials.
Energy saving and environmental protection: High pressure sodium lamps have achieved significant energy-saving effects with their high efficiency and long lifespan. Compared to traditional light sources, high-pressure sodium lamps can significantly reduce energy consumption, decrease carbon emissions, and contribute to the sustainable development of cities.
3, Energy saving advantages and comparison of high-pressure sodium lamp street lights
Compared with LED street lights in terms of energy efficiency, high-pressure sodium street lights have demonstrated their unique advantages. Although LED street lights have rapidly emerged in recent years due to their high efficiency, energy efficiency, and environmental friendliness, high-pressure sodium street lights still have competitiveness in certain aspects.
Comparison of high-power street lamps: For high-power street lamps (≥ 250W), high-pressure sodium lamps have higher luminous efficiency and overall efficiency. Therefore, in the field of high-power street lamps, the energy efficiency of high-pressure sodium lamps is still better than that of LED street lamps.
Comparison of low-power street lights: For low-power street lights (≤ 150W), the energy-saving advantage of LED street lights is more obvious. The effective light efficiency of LED street lights is higher, which can achieve 10% to 30% energy-saving effect.
Comparison of service life: Although the service life of LED street lights is theoretically longer, high-pressure sodium street lights still have a longer service life in practical applications. Especially for well-known brands of high-pressure sodium lamps, their service life can reach tens of thousands of hours, which can meet the long-term needs of urban lighting.
Comparison of cost and cost-effectiveness: High pressure sodium street lamps have advantages in terms of cost and cost-effectiveness. Although the initial investment for LED street lights is relatively high, high-pressure sodium street lights can achieve lower total costs due to their lower energy consumption and longer service life.
