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 produced from a heat resistant glass, containing a little quantity of metallic sodium, neon gas and two electrodes, Neon gas is added to start the discharge and to create adequate heat to vaporize the sodium. Since of law pressure inside the tube, a sufficiently extended tube essential to acquire more light. To minimize the general dimension of the lamp, this tube is normally bent into U-shape.<br><br>The light created by this lamp is yellowish which is created 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 retain this temperature. For this purpose [http://www.chickencoopselect.com/ clicky] 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 one more U-tube. Even though replacing the inner U-tube a single must be extremely cautious since if it is broken and sodium comes in speak to with moisture, it may possibly result in fire.<br><br>All electric discharge lamps call for a greater voltage at the time of beginning and low [http://www.chickencoopselect.com/ internet chicken coop for 6 chickens] voltage throughout operation. Typically, sodium vapour lamps are operated by a high leakage reactance transformer. At starting a high voltage of about 450 volts is applied across the lamp which is sufficient to begin the discharge. When the lamp is fully operative following 10 - 15 minutes, the voltage across it falls to about 150 volts. Due to the fact of the high reactance of circuit, the power factor is low and therefore a p.f improvement capacitor is connected.<br><br>The efficiency of a low pressure sodium vapour lamp is quite high (about 40 - 50 lumens/watt) and it [http://www.chickencoopselect.com/ price s chicken coop] produces a light of specific wavelength possessing yellow color. Sodium lamps are mostly employed for street, high way and airfield lighting where color distinction is not so required. |
Version vom 23. Juli 2012, 04:17 Uhr
Sodium Vapour Lamp consists of a discharge tube produced from a heat resistant glass, containing a little quantity of metallic sodium, neon gas and two electrodes, Neon gas is added to start the discharge and to create adequate heat to vaporize the sodium. Since of law pressure inside the tube, a sufficiently extended tube essential to acquire more light. To minimize the general dimension of the lamp, this tube is normally bent into U-shape.
The light created by this lamp is yellowish which is created 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 retain this temperature. For this purpose clicky 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 one more U-tube. Even though replacing the inner U-tube a single must be extremely cautious since if it is broken and sodium comes in speak to with moisture, it may possibly result in fire.
All electric discharge lamps call for a greater voltage at the time of beginning and low internet chicken coop for 6 chickens voltage throughout operation. Typically, sodium vapour lamps are operated by a high leakage reactance transformer. At starting a high voltage of about 450 volts is applied across the lamp which is sufficient to begin the discharge. When the lamp is fully operative following 10 - 15 minutes, the voltage across it falls to about 150 volts. Due to the fact of the high reactance of circuit, the power factor is low and therefore a p.f improvement capacitor is connected.
The efficiency of a low pressure sodium vapour lamp is quite high (about 40 - 50 lumens/watt) and it price s chicken coop produces a light of specific wavelength possessing yellow color. Sodium lamps are mostly employed for street, high way and airfield lighting where color distinction is not so required.
