Learn The Operating Procedure Of High Pressure Sodium Lights And In What Way Any Of These Lamps Can Be Relatively Efficient
The high pressure sodium lights are relatively small and contain extra element mercury. On first struck dark pink color glow is developed and when it gets further heated it becomes pinkish orange. Some times in between a bluish while glow is also formed because of the mercury present inside when the sodium is not completely warmed.
The D line of sodium is responsible for the generation of light from the lamp, which is extremely pressurized broadened by the high pressure of sodium. This broadened and mercury emission results in distinct vision under the lamp. Thus it can be used in areas where color rendering is a very important element. Thus sodium lamps are usually used by indoor gardeners due to wide range color temperature spectrum at much cheaper cost. Due to the excessive high chemical reactivity of the sodium arc within the lamp it is excursively made up of Aluminum oxide layer to protect it from damage. A noble gas Xenon is injected into the lamp which acts as a starter gas. It do not interfere with reactions taking place inside the lamp, and allows the lamp to start at relatively lower potential but itself remains inactive and unchanged and thus acts as catalyst.
Usually there are three modes of operation of high pressure sodium lamps:-
- Lamp is switched off, when no current flows.
- Lamp is working whenever liquid amalgam is present in the tube.
- Lamp is working when the whole amalgam has evaporated.
The efficiency of sodium lamp is 50 to 140 lumen/watt which is much more than mercury lamps. High pressure sodium light causes relatively extremely less pollution compared to mercury vapor lamp. Thus high pressure sodium lights are not only more effective and useful than other modes of light but are also eco friendly in nature. Therefore, we should greet this new invention with warm hands.
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