2024 Author: Priscilla Miln | [email protected]. Last modified: 2023-12-16 00:21
The HPS lamp is a source of illumination, the operation of which is based on the burning of an arc in an area of high or low pressure. This process takes place in a special tube (burner), made in the form of a cylinder of aluminum oxide, filled with sodium vapor, mercury and xenon gas (required for ignition). The HPS lamp also consists of a glass container in which the burner is located, and a threaded base E-27 or E-40 - depending on the power.
Device
Additional equipment is required to start and burn the arc. This is a ballast (PRA) and a pulse igniter (IZU). Some companies produce lamps of a special design that do not require IZU. Recently, electronic ballasts (electronic ballasts) have been more often used instead of ballasts. Its use allows you to stabilize the power consumption of electrical energy, which has a positive effect on extending the life of the lamp. The electronic ballast increases the frequency of the current, thereby eliminating the flickering effect of 50 Hz. During operation, the HPS lamp burns with a bright orange light, this is due to the presence of sodium vapor in it. It can heat up300 degrees, so only a ceramic cartridge is used for it. It is installed in lamps for various purposes. Powered by AC voltage 220 V.
Pros
DNaT lamp has the following positive characteristics:
- Powerful luminous flux, more than twice the flux of the DRL lamp (this parameter does not deteriorate with prolonged use).
- Long service life. It is about 20,000 hours, while alternative lighting sources will last a maximum of 10,000 hours.
- Small starting and operating currents, which gives good energy savings.
- Application in a variety of climatic zones.
- Reliable ignition at low ambient temperatures.
- High efficiency that reaches 30%.
Cons
The disadvantages of the HPS lamp include the following:
- quite a long time to enter the operating mode, which is about seven minutes;
- weak color reproduction (in bright orange light, other colors are very poorly visible or distorted).
These factors significantly limit its use.
Scope of application
Sodium HPS lamps currently have a fairly wide range of applications as the most cost-effective and efficient source of illumination. They are mainly used for outdoor lighting of roads, pedestrian crossings, sidewalks, parks, production areas, tunnels, etc. Driversvehicles know how to strain at night, when it rains or when driving in fog, when lighting is carried out using DRL lamps. Light from sodium sources eliminates these negative phenomena due to a powerful light flux, which increases the contrast of visible objects. They are also used to illuminate the facades of architectural structures. Sodium lamps are used as a source of additional lighting in greenhouses, greenhouses, etc. For this, HPS are produced with a special spectrum of light radiation that is useful for plants.
The price of the HPS lamp is higher than that of the alternative DRL. But it will pay off over time and bring significant cost savings in the future.
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