High-intensity discharge (HID) lamps are similar to fluorescents in that an arc is generated between two electrodes. The arc in an HID source is shorter, yet it generates much more light, heat, and pressure within the arc tube. Below are HID sources, listed in increasing order of efficacy (lumens per watt): mercury vapor; metal halide
High-pressure sodium-vapour (HPS) lamps have an inner discharge tube made of translucent alumina that can withstand the corrosive effects of a mixture of mercury and sodium under greater pressure and higher temperature. HPS lamps give a whiter light and are used for extra-bright lighting in places such as road intersections, tunnels, sports
Tube IB having a long and narrow electrode 2 facing the discharge space and a discharge medium sealed in a translucent discharge vessel 1 An outer tube OB accommodating the arc tube IB, and a heat retaining means HK disposed in the outer tube OB so as to be movable in accordance with the lighting posture and asymmetrically insulating the surrounding portion 1a of the arc tube IB around the axis.
The switch tube 2RK-8 series ceramic gas discharge tube produced by Ruilongyuan Electronics is an active component. It can still work reliably after 100,000 ignitions. It makes full use of the advantages of the arc discharge principle, that is, high speed (forming an arc less than 50 ns) and Good current Ability to generate short pulses of 10
20/9/2013· (1980). Evaporation Studies of the Sintered Aluminum Oxide Discharge Tubes Used in High Pressure Sodium (HPS) Lamps. Journal of the Illuminating Engineering Society: Vol. 9, No. 4, pp. 233-239.
because of the restrictions on the unlimited use of water coupled with its high cost. Although, shell and tube condensing systems performed the same job of condensing the hot discharge gas into a saturated liquid as evaporative condensers; a small difference in the operating characteristics, namely pressure drop, requires some
In a high-pressure mercury vapour arc discharge tube as used in the Quelle''s Capri N400 sunlamp on display here for instance, the amount of mercury was limited to no more than a few hundred milligrams and due to the high temperatures in the tube
1838395C92 TUBE, HIGH PRESSURE DISCHARGE is an OEM part from Navistar International®, OEM Description: TUBE, HIGH PRESSURE DISCHARGE, Package Dimensions: 9.4 x 7.2 x 2.5 in, Weight: 0.94 lbs
Not all gas discharge lamps use gas at low pressure. In some discharge lamps, the pressure of the gas during operation is 1 to 2 atmospheres. These are “high-pressure” discharge lamps. Examples include mercury -vapor and sodium-vapor street lamps. These lamps …
(Several tenth of minutes if it is low pressure glowing discharge with strata and several hours if it is contracted high pressure discharge). If the tube leaks, then disconnect it from the vacuum pump, and go to the bathroom to seek the leaks by typical garage method – pump it up, put in water and watch the bubbles. Do not work hard when pumping.
10/8/2017· During commissioning, an initial assessment the pump Head by reading the Discharging pressure gauge (P2 as above image, ex: 1 bar ~ 10 m height), and it’s not correct concept because of the Pump Head is not quite the same thing as a Discharge Pressure.. So what is the difference between pressure and head then?. While some pump manufacturers that use pressure (differential pressure …
22/2/2020· This kind of high-pressure mercury lamp is widely used in blueprinting, health care, flaw detection and other tasks. It is not used for daily lighting. Ultraviolet high pressure mercury lamps are high intensity gas discharge lamps. Mercury is evaporated by the use of a bipolar arc discharge.
China Gas Discharge Tube manufacturers - Select 2021 high quality Gas Discharge Tube products in best price from certified Chinese Industrial Tube, Electronic Tube suppliers, wholesalers and factory on Made-in …
High discharge coefficient and very low-pressure drop. Venturimeters can be installed in a horizontal, inclined, or vertical direction. Very less chance of being clogged. The pressure recovery of venturimeter is very high. The discharge pressure is almost near to inlet pressure. Disadvantages of venturimeter:
B. HIGH-PRESSURE AIR MANIFOLD : 2B1. Description. As explained in Section 2A2, the high-pressure manifold is used to direct the storage and distribution of air within the 3000-pound air system. The high-pressure air manifold is mounted on the starboard side of …
Low-pressure Discharge. In low-pressure discharge lamps, the working pressure is much less than the atmospheric pressure. Like the fluorescent lamps, and the sodium lamps. They produce 200 lumens per watt. One advantage of low-pressure discharge is they have a long life span. The low-pressure discharge lamps require the ballast to create a high
HIGH PRESSURE SELF PRIMING CENTRIFUGAL PUMPS High pressure self priming centrifugal pumps are used in appliions where relatively low flows are required to be discharged at high pressure. Typical is the Aussie Fire Chief, a pump that delivers up to 80 metres head, and …
tube (A) atmospheric pressure is the same inside the tube as it is outside: 14.7 PSI. A diffuser is used on high-pressure pumps and is similar to a volute but more compact in design. Many High-pressure centrifugal pumps are designed for use in appliions requiring high-discharge pressures and low flows.
Discharge tube is a glass tube fitted with two electrodes placed opposite to each other. The tube is sealed and contains a vacuum pump. The function of vacuum pump is to reduced or change the pressure inside the tube. The two electrodes are connected to a high voltage battery.
the sodium vapor produces light when the pressure within the arc tube is sufficient. High pressure sodium lamps are the most efficient artificial white light source with about 29% of the energy used by the lamp producing light. Components?? The arc tube contains the xenon and sodium-mercury amalgam mixture and provides
High pressure discharge lamps. These lamps have pressurized gas inside the tube, with higher pressure than the atmospheric pressure. Some examples of high pressure discharge lamps is are the metal halide lamps, the high pressure sodium lamps and the high pressure mercury-vapor lamps which are are very old, being replaced in most appliions
21/1/2015· High Back Pressure Foam Maker High back pressure foam maker is a discharge tube (bronze, carbon steel or stainless steel) with flange inlets and outlets and has air induction holes placed 90 degrees apart to allow air into the foam solution stream to generate expanded foam. These special foam makers are to inject foam into a fuel storage tank
which seals a high pressure air reservoir connected to the water filled column. The connection is via a discharge orifice, and the coination of reservoir pressure and orifice area determine the pulse pressure amplitude which travels down the water column at the wave speed in the tube. For the materials used, this wave speed is around 1300m/s.
EP1408723B1 EP03022456.2A EP03022456A EP1408723B1 EP 1408723 B1 EP1408723 B1 EP 1408723B1 EP 03022456 A EP03022456 A EP 03022456A EP 1408723 B1 EP1408723 B1 EP 1408723B1 Authority EP European Patent Office Prior art keywords discharge lamp wattage voltage discharge lamp Prior art date 2002-10-09 Legal status (The legal status is an assumption and is not a legal conclusion.
High pressure discharge lamps. High-pressure lamps have a discharge that takes place in gas under slightly less to greater than atmospheric pressure. For example, a high pressure sodium lamp has an arc tube under 100 to 200 torr pressure, about 14% to 28% of atmospheric pressure; some automotive HID headlamps have up to 50 bar or fifty times atmospheric pressure.
10/8/2021· Structure of the low-pressure gas discharge. If a gas-discharge tube is connected to a high-voltage DC source, or to an asymmetric (polarised) AC source (such as an induction coil), various structures will be seen in the glowing column depending on the gas pressure, the tube length, and the operating current.