Sodium Vapour Lamp

出典: くみこみックス

版間での差分
最新版 (2012年8月21日 (火) 16:41) (ソースを表示)
 
1 行 1 行
-
Sodium Vapour Lamp consists of a discharge tube made from a heat resistant glass, containing a modest amount of metallic sodium, neon gas and two electrodes, Neon gas is added to commence the discharge and to develop sufficient heat to vaporize the sodium. Since of law pressure inside the tube, a sufficiently long [http://kurddrama.info/read_blog/53018/sodium-vapour-lamp smokestik] tube required to obtain much more light. To lessen the all round dimension of the lamp, this tube is generally bent into U-shape.<br><br>The light developed by this lamp is yellowish which is made at its optimum pressure of about .004mm of mercury. This pressure is obtained at a temperature of about 280 C and so it becomes essential to maintain this temperature. For this objective the U-tube is enclosed in a double walled flask to avert lose of heat. The double walled flask is interchangeable and can be fitted on to another U-tube. Even though replacing the inner U-tube a single need to be quite cautious simply because if it is broken and sodium comes in contact with moisture, it may outcome in fire.<br><br>All electric discharge lamps demand a higher voltage at the time of beginning and low voltage during 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 sufficient to begin the discharge. When the lamp is fully operative immediately after 10 - 15 minutes, the voltage across it falls to about 150 volts. Due to the fact of the high reactance of circuit, the energy issue is low and hence a p.f improvement capacitor is connected.<br><br>The efficiency of a low pressure [http://vietub.com/read_blog/89590/sodium-vapour-lamp like i said] sodium vapour lamp is quite high (about 40 - 50 lumens/watt) and it produces a light of [http://iloveameri.ca/read_blog/148179/sodium-vapour-lamp blu e cig] specific wavelength obtaining yellow color. Sodium lamps are mainly employed for street, high way and airfield lighting exactly where color distinction is not so essential.
+
Sodium Vapour Lamp consists of a discharge tube made from a heat resistant glass, containing a small amount 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. Simply because of law pressure inside the tube, a sufficiently lengthy tube needed to obtain a lot more light. To lessen the general dimension of the lamp, this tube is generally bent into U-shape.<br><br>The light produced by this lamp is yellowish which is made at its optimum pressure of about .004mm of mercury. This pressure is obtained at a temperature [http://www.grenadamusix.com/read_blog/39537/sodium-vapour-lamp chicken coop houses online] of about 280 C and so it becomes necessary to preserve this temperature. For this objective the U-tube is enclosed in a double walled flask to stop lose of heat. The double walled flask is interchangeable and can be fitted on to an additional U-tube. While replacing the inner U-tube one particular should be extremely careful since if it is broken and [http://vids.rationalveracity.com/read_blog/147246/sodium-vapour-lamp cheap chicken coop buy] sodium comes in make contact with with moisture, it may possibly outcome in fire.<br><br>All electric discharge lamps demand a higher voltage at the time of beginning and low voltage throughout operation. Normally, sodium vapour lamps are operated [http://fxutube.com/read_blog/50309/sodium-vapour-lamp open site in new window] by a high leakage reactance transformer. At beginning a high voltage of about 450 volts is applied across the lamp which is sufficient to commence the discharge. When the lamp is totally operative immediately after 10 - 15 minutes, the voltage across it falls to about 150 volts. Due to the fact of the high reactance of circuit, the power element 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 distinct wavelength getting yellow color. Sodium lamps are primarily employed for street, high way and airfield lighting exactly where color distinction is not so needed.

最新版

Sodium Vapour Lamp consists of a discharge tube made from a heat resistant glass, containing a small amount 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. Simply because of law pressure inside the tube, a sufficiently lengthy tube needed to obtain a lot more light. To lessen the general dimension of the lamp, this tube is generally bent into U-shape.

The light produced by this lamp is yellowish which is made at its optimum pressure of about .004mm of mercury. This pressure is obtained at a temperature chicken coop houses online of about 280 C and so it becomes necessary to preserve this temperature. For this objective the U-tube is enclosed in a double walled flask to stop lose of heat. The double walled flask is interchangeable and can be fitted on to an additional U-tube. While replacing the inner U-tube one particular should be extremely careful since if it is broken and cheap chicken coop buy sodium comes in make contact with with moisture, it may possibly outcome in fire.

All electric discharge lamps demand a higher voltage at the time of beginning and low voltage throughout operation. Normally, sodium vapour lamps are operated open site in new window by a high leakage reactance transformer. At beginning a high voltage of about 450 volts is applied across the lamp which is sufficient to commence the discharge. When the lamp is totally operative immediately after 10 - 15 minutes, the voltage across it falls to about 150 volts. Due to the fact of the high reactance of circuit, the power element 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 distinct wavelength getting yellow color. Sodium lamps are primarily employed for street, high way and airfield lighting exactly where color distinction is not so needed.

表示