Sodium Vapour Lamp: Unterschied zwischen den Versionen
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| − | Sodium Vapour Lamp consists of a discharge tube | + | Sodium Vapour Lamp consists of a discharge tube created from a heat resistant glass, containing a small amount of metallic sodium, neon gas and two electrodes, Neon gas is added to begin the discharge and to develop sufficient heat to vaporize the sodium. Because of law pressure inside the tube, a sufficiently lengthy tube necessary to [http://www.chickencoopselect.com/chicken-coop-accessories chicken coop heaters website] obtain more light. To decrease the overall dimension of the [http://www.chickencoopselect.com/ learn about price s chicken coop] lamp, this tube is usually bent into U-shape.<br><br>The light created by this lamp is yellowish which is produced at its optimum pressure of about .004mm of mercury. This pressure is obtained at a temperature of about 280 C and so it becomes required to maintain this temperature. For this purpose the U-tube is enclosed in a double walled flask to prevent lose of heat. The double walled flask is interchangeable and can be fitted on to another U-tube. While replacing the inner U-tube 1 should be quite cautious since if it is broken and sodium comes in speak to with moisture, it might outcome in fire.<br><br>All electric discharge lamps demand a larger voltage at the time of starting and low voltage in [http://www.chickencoopselect.com/chicken-houses high quality chicken coop hen house] the course of operation. Typically, sodium vapour lamps are operated by a high leakage reactance transformer. At beginning a high voltage of about 450 volts is applied across the lamp which is adequate to begin the discharge. When the lamp is completely operative immediately after ten - 15 minutes, the voltage across it falls to about 150 volts. Since of the high reactance of circuit, the power aspect is low and therefore a p.f improvement capacitor is connected.<br><br>The efficiency of a low pressure sodium vapour lamp is very high (about 40 - 50 lumens/watt) and it produces a light of specific wavelength obtaining yellow color. Sodium lamps are mainly employed for street, high way and airfield lighting where color distinction is not so essential. |
Version vom 3. Juli 2012, 02:17 Uhr
Sodium Vapour Lamp consists of a discharge tube created from a heat resistant glass, containing a small amount of metallic sodium, neon gas and two electrodes, Neon gas is added to begin the discharge and to develop sufficient heat to vaporize the sodium. Because of law pressure inside the tube, a sufficiently lengthy tube necessary to chicken coop heaters website obtain more light. To decrease the overall dimension of the learn about price s chicken coop lamp, this tube is usually bent into U-shape.
The light created by this lamp is yellowish which is produced at its optimum pressure of about .004mm of mercury. This pressure is obtained at a temperature of about 280 C and so it becomes required to maintain this temperature. For this purpose the U-tube is enclosed in a double walled flask to prevent lose of heat. The double walled flask is interchangeable and can be fitted on to another U-tube. While replacing the inner U-tube 1 should be quite cautious since if it is broken and sodium comes in speak to with moisture, it might outcome in fire.
All electric discharge lamps demand a larger voltage at the time of starting and low voltage in high quality chicken coop hen house the course of operation. Typically, sodium vapour lamps are operated by a high leakage reactance transformer. At beginning a high voltage of about 450 volts is applied across the lamp which is adequate to begin the discharge. When the lamp is completely operative immediately after ten - 15 minutes, the voltage across it falls to about 150 volts. Since of the high reactance of circuit, the power aspect is low and therefore a p.f improvement capacitor is connected.
The efficiency of a low pressure sodium vapour lamp is very high (about 40 - 50 lumens/watt) and it produces a light of specific wavelength obtaining yellow color. Sodium lamps are mainly employed for street, high way and airfield lighting where color distinction is not so essential.
