What are high pressure sodium lamps used for?
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.
Where are high pressure sodium vapour lamps 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.
How does a high pressure sodium lamp work?
In a high pressure sodium lamp, a compact arc tube contains a mixture of xenon, sodium and mercury. The mercury vapor raises the gas pressure and operating voltage, and the sodium vapor produces light when the pressure within the arc tube is sufficient.
What 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 much power does a high pressure sodium light use?
A high-pressure sodium street light can draw up to 1000 watts, and an incandescent light used in the 1900s needed 320 watts. Some LED street lights require only 73 watts and, according to the U. S. Department of Energy, produce a higher quality of light.
What is a SOX lamp?
n. an electric lamp in which sodium vapor is activated by current passing between two electrodes, producing a yellow, glareless light: used on streets and highways.
What is high pressure sodium lamp?
What is the spectrum of a high pressure sodium lamp?
Spectrum of high pressure sodium lamp. The yellow-red band on the left is the atomic sodium D-line emission; the turquoise line is a sodium line which is otherwise quite weak in a low pressure discharge, but become intense in a high pressure discharge. Most of the other green, blue and violet lines arise from mercury.
What’s the difference between high pressure sodium and vapor lighting?
Among the minor deficiencies in sodium vapor lighting are the following: 1 High pressure sodium lights contain a small amount of toxic mercury. The mercury inside the bulbs is a hazardous… 2 Sodium vapor lights are omnidirectional. Omnidirectional lights produce light in 360 degrees. This is a large system… More
Are there different types of sodium vapor lamps?
Two varieties of such lamps exist: low-pressure and high-pressure. Low-pressure sodium lamps are highly efficient electrical light sources, but their yellow light restricts applications to outdoor lighting, such as street lamps, where they are widely used.
How does a low pressure sodium lamp work?
There are two kinds of sodium lights: Low Pressure (LPS) and High Pressure (HPS). 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.