Advantages. Most energy efficient light source commercially available, with an efficacy of 100 to 185 lumens per watt. Lamps have average life in the 14,000 to 18,000 hour range and have excellent lumen maintenance (very little reduction in lumen output over life of lamp).
In the same way How does sodium lighting work?
In a high pressure sodium lamp, a compact arc tube contains a mixture of xenon, sodium and mercury. The xenon gas which is easily ionized, facilitates striking the arc when voltage is applied across the electrodes. The heat generated by the arc then vaporizes the mercury and sodium.
Subsequently, Which one is disadvantages of sodium Vapour lamp? WHAT ARE THE DISADVANTAGES OF SODIUM VAPOUR LAMPS? Colour rendering: The colour rendition properties are not comparable to the other lamps- the white SON lamp has a Ra value of 80 while the SOX has a Ra of just 20 which is way below that of an Incandescent (Ra -100).
What is the average life of sodium Vapour lamp?
The efficiency of a sodium vapour lamp under practical conditions is about 40-50 lumens/watt. Such lamps are manufactured in 45, 60, 85 and 140 W ratings. The average life is about 3000 hours and is not affected by voltage variations.
Why sodium Vapour lamps are used in street lights?
It is most visible in street lighting. Sodium-vapour lamps are good for night-time illumination because of their high efficiency and because the light they produce penetrates mist and fog particularly well.
Where are sodium Vapour lamps commonly used?
High-pressure sodium (HPS) lamps have been widely used in industrial lighting, especially in large manufacturing facilities, and are commonly used as plant grow lights. They contain mercury. They have also been widely used for outdoor area lighting, such as on roadways, parking lots, and security areas.
Are LEDs as good as HPS?
LEDs are much the same. Though they’re generally more efficient than HPS (with some clocking 2.8 µmol/joule), some LEDs are less efficient than high-quality HPS fixtures, and they give you less light. … All too often, the µmol/joule rating on HPS products states the lamp efficiency, not the actual product efficiency.
Can I put an LED bulb in a sodium fixture?
High pressure sodium bulbs (“lamps”) are an old standby for lighting that’s still used today in spite of so much talk of LED lights. … LEDs, however, are better able to control their light, which is why a lower-watt LED can replace a higher-watt high pressure sodium bulb.
Why is sodium lamp used?
These lamps are mostly used for street lighting as well as industrial uses. The lamp works by creating an electric arc through vaporized sodium metal. Other materials and gases are used to help start the lamp or control its color.
Can I replace a high pressure sodium bulb with LED?
High pressure sodium bulbs (“lamps”) are an old standby for lighting that’s still used today in spite of so much talk of LED lights. … LEDs, however, are better able to control their light, which is why a lower-watt LED can replace a higher-watt high pressure sodium bulb.
Where are high pressure sodium lamps used?
High pressure sodium lamps are used in outdoor lighting of streets and parking lots and in indoor settings where color rendering is not critical. These indoor settings include warehouse and shipping areas and some manufacturing areas.
What is the difference between mercury lamp and sodium lamp?
The mechanism in mercury vapour lamp is more involved and sequential. … Hence, the light from the mercury vapour lamp is white. Applications. Although sodium vapour lamps produce much higher light output (about 90 lumens/watt) they cannot be used in lighting applications where colour-rendering property is very crucial.
What is the minimum wattage of sodium Vapour lamp?
1000W High Pressure Sodium Vapour Tubular Lamp
| Lighting Type | High Pressure Sodium Vapour |
|---|---|
| Brand | Venture |
| Country of Origin | Made in India |
| Wattage |
1000W |
| Minimum Order Quantity | 1 Piece |
What is the difference between sodium lamp and mercury lamp?
Answer: The light in Sodium Vapour lamp is from an atomic emission process whereas in Mercury Vapour Lamp it is, finally, from fluorescence emission. The mechanism of light emission in a sodium vapour lamp is simple and straight-forward.
What is minimum wattage of sodium Vapour?
1000W High Pressure Sodium Vapour Tubular Lamp
| Lighting Type | High Pressure Sodium Vapour |
|---|---|
| Brand | Venture |
| Country of Origin | Made in India |
| Wattage |
1000W |
| Minimum Order Quantity | 1 Piece |
What is the average life of sodium vapour lamp?
The efficiency of a sodium vapour lamp under practical conditions is about 40-50 lumens/watt. Such lamps are manufactured in 45, 60, 85 and 140 W ratings. The average life is about 3000 hours and is not affected by voltage variations.
Why are orange sidewalk lights called sodium lamps?
Streetlights and industrial lights, such as those found in parking garages or manufacturing facilities, give off a yellowish or orange glow because they are sodium vapor gas-discharge lights. There are two types of sodium vapor lights, high pressure (HPS) and low pressure (LPS).
Do high pressure sodium lights use a lot of electricity?
High pressure sodium fixtures are not as energy efficiency as LEDs. In fact, LED bulbs use between 40-75% less electricity than a HPS fixture.
What’s better LED or high pressure sodium?
High Pressure Sodium Lights have long warm-up time, usually around 15-20 minutes. LED fittings are instantly at full output. HPS Lights have good lifespans – around 14,000 hours – though this is significantly less than LEDs. LEDs last longer than any light source commercially available on the market.
Why is HPS better than LED?
The heat per watt is far greater with an HPS fixture compared to LED. This technology is far more efficient in transferring energy in to light, as it produces less heat and has a higher wattage equivalency to HPS (600w vs 1000w).
What color is a high pressure sodium light?
High-pressure sodium (HPS) lamps are part of the family of high intensity light bulbs that put out large amounts of light generally needed for street lighting and security lighting. The combination of metals and gasses within inside the glass tube produces an orange-white light commonly found in street lights.
How do mercury vapor lamps work?
The mercury vapor lamp works by creating an electric current to mercury vapor within a sealed glass jacket. The bulb is comprised of an inner tube, called the arc tube, and an outer jacket (or bulb). … Using too small of a ballast will result in lower light output and can shorten the life of the bulb.
Are sodium lamps still used?
High-pressure sodium (HPS) lamps have been widely used in industrial lighting, especially in large manufacturing facilities, and are commonly used as plant grow lights. They contain mercury. They have also been widely used for outdoor area lighting, such as on roadways, parking lots, and security areas.
Are high pressure sodium lights being phased out?
Phasing out
A number of popular lighting types will have to be phased out by 2017 including selected ‘standard’ high-pressure sodium (including retrofit), high-pressure mercury, and standard performance metal halide.
Don’t forget to share this post with your friends !
Discussion about this post