The basic parts of a typical mercury lamp are shown in figure 1. The power ratings of superhighpressure mercury vapor lamps range from 100 w to 10 kw, and their luminous efficiency is 3070 luw. Us4288715a lowpressure mercury vapor discharge lamp. Low pressure mercury vapor lamps are a highly efficient source of uv light, particularly short wavelength uv light 254nm and 185nm. Pdf mercury vapor release from broken compact fluorescent. Rather than a cold spot, the lamp s amalgam spot on pellet regulates mercury vapor pressure during operation and yields up to three times the uvc output of a standard low pressure mercury lamp of the same length. Fluorescent lamps tubes and compacts contain low pressure mercury vapor gas. Nov 05, 2019 mercury vapor bulbs are sometimes coated. Among the highpressure and superhighpressure mercuryvapor lamps, the metallohalogen lamps are of particular interest.
Always operate the light source in its upright position. While the mercury vapor example has a hot spot in the middle corresponding to the area. The outer bulb may be clear or coated with a phosphor. A mercuryvapor lamp is a kind of gas discharge lamp. Pressure sodium vapour lamps hps for general lighting purposes. The use of mercury vapor lamps as wavelength cali emission of many fluorophores into the midvisible or red bration standards is a common practice in both fluores spectral regions. For more information on how to recycle whole or unbroken fluorescent and other mercury containing lamps, see. P a s c o w ill repair or replace, at its option, any part of the product. Disposal conciderationsnonmandatory state or local regulations regulates disposal of mercury vapor lamps. Pdf the mercury vapor lamp is the oldest high intensity discharge technology lamp that uses an electric arc, and comes in different shapes. Monochromator wavelength calibration standards extending into. This starting electrode is located next to one of the main electrodes inside the arc tube. Further, a great deal of recent activity cence and atomic spectroscopy and is described in has extended interest to even longer wavelengths with.
Unscrew the eight screws that attach the top plate of the light source and remove the top plate. Less than 1% of the mercury in a mercury vapor lamp is in vapor form and will be released if a lamp is accidentally broken. So you have to choose a mercury vapor bulb that contains both types of rays to save budget as well as save space for other devices. If a lamp is broken, the following materials may be released. Engineering high intensity discharge bulletin mercury lamps. In this case, the degradation of the organic matter occurs directly via photolysis i. The arc tube, made of quartz, contains mercury vapor, electrodes and a small amount of. State or local regulations regulates disposal of mercury vapor lamps. Pdf on mercury vapor lamps and their effect on the smart. Among the highpressure and superhighpressure mercury vapor lamps, the metallohalogen lamps are of particular interest. Mercury vapor lamps generally contain between 10 and 100 mg of mercury. As an hid product, that makes these lamps somewhat longlasting. Accidents and improper procedures increase the risk of exposure to people and the local environment. State and county health officials, in collaboration with wisconsin department of natural resources, conducted an investigation of mercury exposure of workers and an environmental assessment of the facility, surrounding areas, and worker vehicles.
The tubes carry many times the amount of mercury about 115 milligrams depending on the lamp then the metal halide or mercury vapor bulbs about. Halcoindsds1 3 of 3 revised 32017 the current epa toxicity. A lamp in which ultraviolet and yellowishgreen to blue visible light is produced by an electric discharge through mercury vapor. Because you likely use a reflector to force light from your mercury vapor lamp downwards, you lose roughly 15% of that heat. The first and only container tested and proven effective in meeting uwr standards for containment of broken lamps and osha requirements for 8 hour mercury. Lighting fixture parts transformers mercury vapor lamps.
Among the light sources in use for general lighting, high pressure mercury vapour h. Amalgam lamps use a mercury amalgam mix to control mercury vapor pressure. Monochromator wavelength calibration standards extending. Mercury vapor lamps free download as powerpoint presentation. Once free electrons, ions and photons have been produced in the arc tube it is. When a mercury vapor lamp is to be disposed, it is subject to the current epa toxicity characteristic leaching procedure tclp disposal criteria. If you are unsure whether a light bulb contains mercury, look for the letters hg the elemental symbol for mercury on the bulb. A mercury vapor lamp is a gasdischarge lamp that uses an electric arc through vaporized. His work was a commercial success and eventually his. Mercuryvapour lamp synonyms, mercuryvapour lamp antonyms. Most mercury vapor inside fluorescent light bulbs becomes bound to the inside of the light bulb as it is used. The mercury atoms release ultraviolet and visible light. Mercuryvapour lamp article about mercuryvapour lamp by.
A sodium vapor lamp is a gasdischarge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm two varieties of such lamps exist. The eu wants to ban them because they contain large amounts of mercury and are not efficient like fluorescent bulbs. M ercury vapo r lig ht so urce university of virginia. On mercury vapor lamps and their effect on the smartgrid. Ge lighting will warrant its mercury vapor lamps, multi vapor, pulsearc, staybright metal halide lamps and lucalox high pressure sodium lamps on bilevel or continuous dimming systems provided the following operational guidelines, in addition to those provided on the lamp packaging and in the ge 9200 lamp catalog, are met.
Mercury vapor lamps are primarily used in industrial applications and outdoor lighting e. It has a bluish green appearance and features a low initial cost. A slide lock foil bag between the inner and outer boxes contains mercury vapor during storage of incidentally broken lamps. Mercury vapor lights have traditionally cost less than. The alumina underlayer comprises spherical alumina particles that have been vapor deposited in a certain particle size range to. Liquid mercury lamps have the potential to be hazardous both during operation and when the lamp is off. Sep 10, 2018 philips mercury vapor lamps all wattages all standard mercury vapor lamps medium and mogul base h33, h36, h37, h38, h39, h43, h44, h45, h46.
If you are unsure whether a light bulb contains mercury, look for the letters hg the elemental symbol for mercury. Mercury vapor bulb facts 1 self ballasted mercury vapor sbmv bulbs bulbs have a filament inside that works as a ballast. Water treatment processes based on uv light involve the use of an artificial light source generally low or mediumpressure mercury vapor lamps. The first and only container tested and proven effective in meeting uwr standards for containment of broken lamps and osha requirements for 8 hour mercury exposure. The discharge generates two main lines at 185 and 253. During the recycling process, lamps are crushed, releasing mercury vapor and mercury containing dusts.
Us4199708a lowpressure mercury vapor discharge lamp. Just the name mercury vapor is misleading because there is no vapor in the arc tubes unless the arc is burning. Mercury vapor lamps, high pressure mercury lamps manufacturer. Recycling cfls and other fluorescent bulbs allows reuse of the glass, metals and. Mercury is not only an ingredient in metalhalide lamps but. Many types of light bulbs contain metals such as mercury.
Mercury vapour lamp synonyms, mercury vapour lamp pronunciation, mercury vapour lamp translation, english dictionary definition of mercury vapour lamp. All mercury vapor lamps contain some amount of mercury. Sunlite 03675su mv100dxmed h38 mercury vapor lamp, 100 watts, medium base e26, ed17, 6000 hours life, 4000 lumen, coated white finish 4. Mercury vapor lamps for open and enclosed luminaires osram ds. These diagrams provide an ataglance look at the comparative uniformity of the led demonstration design and conventional solution across the target zone. This is why you should choose a mercury vapor lamp that can act as a heating lamp. Pet reptiles, especially bearded dragons, need a proper temperature to maintain their best condition. Occupational mercury exposure at a fluorescent lamp. However, when compared to the 50,000 to 100,000hour minimum life expectancy of an led, it becomes evident that a mercury vapor lamp will need to be replaced long before an led will. Mercury vapour lamp synonyms, mercury vapour lamp antonyms.
Often called germicidal or ozone absorption lamps, they are very stable light sources. Czichy m, hartmann t, mentel j, awakowicz p 2008 ignition of mercury free high intensity. The temperature of the amalgam is determined to a great extent by lamp power. The lamps are recyclable unless the lamp is broken. The arc discharge is generally confined to a small fused quartz arc tube mounted within a larger borosilicate glass bulb. An amalgam of metallic sodium and mercury lies at the coolest part of the lamp and provides the sodium and mercury vapor that is needed to draw an arc.
Among the highpressure and superhighpressure mercuryvapor lamps, the metallohalogen lamps. Mercury vapor lamps for open and enclosed luminaires. Such securing reduces the risk that small portions of the amalgam might become dislodged by vibration or shock and escape from the container into the. Mercury vapor light source 01202262h 4 w arranty and equipm ent return l im ite d w a rra n ty p a s c o scientific w arrants this product to be free from defects in m aterials and w orkm anship for a period of one year from the date of shipm ent to the custom er. In case of fluorescent lamp the mercury vapour pressure is maintained at lower level such that 60% of the total input energy gets converted into. In some bulbs, the ultraviolet light shines on phosphors which make white light from it, although not all mercury vapor lamps use phosphors. Mercury vapor light bulbs mercury vapor lamps can turn any commercial environment into an elegant, color laced space.
The mercury lamp was the first kind of metal vapour light source that was mass. Mercury vapor, metal halide, high pressure sodium are all types of hid bulb. Mercuryvapor lamp simple english wikipedia, the free. Philips mercury vapor 175watt high pressure hid light bulb is ideal for use in landscape lighting, dusk to dawn, roadway, parking lots, floodlights and security fixtures. Mercuryvapor lamp definition of mercuryvapor lamp by. Removing the broken lamp debris and ventilating the area for 15 minutes if possible is recommended. Lowpressure mercury vapor discharge lamp having in the discharge vessel a vapor pressurecontrolling mercury amalgam which is secured to the inner surface of a wall of a container which is provided with an opening to the discharge vessel. Abstract the mercury vapor lamp is the oldest high intensity discharge technology lamp that uses an electric arc, and comes in different shapes and designs. If you are doing a capital project, see the fluorescent lamps recycling web page.
Lowpressure mercury vapor discharge lamp having a closed elongated lamp envelope and comprising at least two electrodes disposed near a first end of the lamp envelope, at least one electrode is situated at the end of at least one inner tube situated within and sealed in a gastight manner to the lamp envelope, this inner tube having at least one opening to the inside of the lamp envelope, the. A mercuryvapor lamp is a gasdischarge lamp that uses an electric arc through vaporized mercury to produce light. Epa estimates that the rest of the mercury within a cfl about 11 percent2 is released into air or water when it is sent to a landfill, assuming the light bulb is broken. High pressure mercury vapour lamps have been used for a vast number of applications ever since their introduction in 1906. Two centuries of electric light source innovations pdf. Using a glove or several folds of thick cloth to protect your hand, unscrew the lamp. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed. The power ratings of superhighpressure mercuryvapor lamps range from 100 w to 10 kw, and their luminous efficiency is 3070 luw. Mercury vapour lamp article about mercury vapour lamp by.
Without the mercury vapor to produce uv energy, there would be no light. Direct exposure of consumers or workers to hg vapor from fractured or crushed lamps. A small portion contains greater than 100 mg of mercury. Some lamps are inevitably broken accidentally during shipping, retail sales, consumer use, and recycling and release a portion of their mercury inventory as volatile hg 0 vapor, which is the dominant mercury form in the early stages of lamp life 3. Mercury is present in the lamp in both the phosphor powder and in the vapor. Mercury vapor lamps street light electromagnetic spectrum. An improved mercury vapor lamp construction as described which includes an ultraviolet reflecting underlayer of alumina particles for the phosphor coating to enable reduction in the phosphor coating weight without accompanying reduction in the lamp lumen output. The startup electrode allows these lamps to be started using a much lower startup voltage than required by hps lamps. Recycling and disposal of cfls and other bulbs that contain mercury.
This test is used to determine if an item can be managed of as hazardous or nonhazardous waste. Mercury vapor pressure an overview sciencedirect topics. Recycling mercuryadded fluorescent and other lamps, waste. Fast facts on mercury in lamps and bulbs blog nhsaves.
Wmtracker from waste management wm lamptracker inc. When a mercury vapor lamp is to be disposed, it is subject to. Lamps of this type are commonly used in school gymnasiums, sports arenas, parking areas. Philips 175watt ed28 mercury vapor high intensity discharge. Mercury vapor and metal halide lamp starting both mercury vapor and halide lamps use a separate starting electrode. Mercury vapor lamp definition is an electric lamp in which the discharge takes place through mercury vapor called also mercury lamp. Thirdorder emission lines from mercury vapor lamps william d. These bulbs are extremely efficient and the phosphor that coats the bulbs exterior is perfect for color rendering. Although there are many sizes and several shapes of mercury lamps, the most commonly used types are of two bulb construction with an outer bulb jacket and an inner bulb arc tube. These types of lamps are available in ozone producing and ozone free quartz, with a variety of phosphors. Lowpressure sodium lamps are highly efficient electrical light sources, but their yellow light restricts applications to outdoor lighting, such as street lamps, where they are widely used. Compact fluorescent lamps without integrated control gear. This fact sheet summarizes the use of mercury in lighting devices, such as.
Highpressure sodium vapor lamps for open and enclosed luminaires. Philips mercury vapor lamps last at least 24,000 hours. California maine massachusetts minnesota new hampshire pdf vermont. These lamps belong to the category of lowpressure mercury vapor discharge lamps. Mercury vapour lamp definition of mercury vapour lamp by. Among the highpressure and superhighpressure mercury vapor lamps, the metallohalogen lamps. Mercury vapor bulbs produce a lot of heat, so its extremely important to use a properly rated socket.
Synonyms for mercury vapour lamp in free thesaurus. Hid bulbs are also used in vehicle headlamps and can be identified by their characteristic bluishwhite tint when lit. This means you reduce the efficiency of a mercury vapor lamp by 15% simply based on the overall design of the light itself. Expired lifetime application number us06079,019 inventor johan b. Us4079288a alumina coatings for mercury vapor lamps.
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