Lambu Tungstena da Halogen

A shekarar 1958, E.G. Fridrich da E.H. Wiley sun yi aiki da Tungsten Halogen Lamp tare da aiki da gas na halogen (yadda aka iya Iodine) a cikin incandescent lamp. A cikin haka, ba tabbas gas na halogen, filamen na incandescent lamp yana kawo karshe cewa ya zama da sakamakon da ya shiga wajen karshen filamen a lokacin da yake sauti. Tungsten daga filamen na incandescent lamp mai gaba ta zama da ci abubuwan da suka shiga siffar jirgin lamp. Saboda haka, lumens suna zauna da darasi masu samun cikin jirgin lamp. Don haka, efficacy, yani lumen/watt na incandescent lamp yana kawo karshe. Amma amfani da gas na halogen a cikin incandescent lamp yana taimaka waɗannan matsalolin da yake magance. Gas na halogen yana taimaka tungsten da suka shiga a cikin filamen zuwa tungsten halide wanda bai san ba a cikin jirgin lamp a lokacin da temperature na jirgin lamp ta ƙarkashinsa 500K da 1500K. Saboda haka, lumens ba su zauna da darasi. Don haka, Lumen per watt na lamp ba zama da kawo karshe. Duk da haka, saboda amfani da gas na halogen mai kyau, rate na evaporation na filamen yana kawo karshe.

Tsarin Haɗin Halogen Lamp

Tsarin haɗin halogen lamp ana amincewa a kan tsarin halogen na regenerative.

A cikin incandescent lamp, saboda temperature mai karkashi, tungsten filamen yana shiga a lokacin da yake sauti. Saboda flow na convectional gas a cikin jirgin lamp, tungsten da suka shiga yana zama da ci abubuwan da suka shiga daga filamen. Jirgin lamp ta fiye ne, saboda haka tungsten da suka shiga yana adabi a kan wall na jirgin lamp. Wannan bai zama da cewa a cikin halogen lamp. Temperature na filamen na halogen lamp yana da ƙarkashinsa 3300K. Saboda haka, tungsten zai shiga daga filamen. Saboda flow na convectional gas a cikin jirgin lamp, tungsten atoms da suka shiga yana zama da ci abubuwan da suka shiga daga filamen zuwa zama da temperature mai kadan da suka shiga da iodine vapor da zaka iya zama tungsten iodide. Temperature na zama tungsten da iodine shine 2000K.

Saboda haka, flow na convectional gas a cikin jirgin lamp yana zama da ci tungsten iodide zuwa wall na jirgin lamp da temperature mai kadan. Amma jirgin lamp yana da cutar da take da temperature na glass wall ta ƙarkashinsa 500K da 1500K, kuma a wannan temperature tungsten iodide bai san ba a cikin wall na jirgin lamp. Tungsten iodide yana zama da ci abubuwan da suka shiga zuwa filamen saboda flow na convectional gas a cikin jirgin lamp. Daga baya, a cikin filamen da temperature mai karkashi 2800K, tungsten iodide yana zama tungsten da iodine vapor. Saboda wannan shine temperature na zama tungsten iodide zuwa tungsten da iodine atoms shine >2800K.

Saboda haka, tungsten atoms yana zama da ci abubuwan da suka shiga zuwa filamen don kammala tungsten da suka shiga. Ba gaba suka shiga saboda temperature mai karkashi na filamen da suka zama tungsten iodide. Wannan cycle yana faruwa da faruwa. Saboda haka, filamen ba zama da kawo karshe, kuma temperature na filamen zai da ƙarkashinsa mafi yawa da incandescent lamp na musamman, wanda yana taimaka masu efficiency, yani mafi lumen/watt. Saboda bane ba suka shiga filamen, lifespan na Tungsten Halogen Lamps yana da ƙarkashinsa mafi yawa da clarity of illumination. Equation na chemical shine

Budede na Halogen Lamp

Malamincin incandescent lamp, a lokacin da yake mutu, yana iya bayar da 80% daga lumens na bi saboda fade da glass wall da tungsten deposition a cikin ita. Amma tungsten halogen lamp yana iya bayar da 95% daga lumens na bi a lokacin da yake mutu. Kafin borosilicate ko aluminosilicate glass an yi budede na halogen lamp. Saboda hakan, suka da ƙarkashinsa mafi temperature da thermal expansion co-efficient mai kadan. Amma a yanzu, Quartz an yi amfani da ita don budede na halogen bulb. Quartz shine transparent silica da silicon dioxide mai sauƙi. Ita shine mafi kyau da ke da ƙarkashinsa mafi temperature da borosilicate ko alumina silicate glass. Quartz bulb yana da soft material a lokacin da yake da ƙarkashinsa 1900K. Duk da haka, a cikin filamen, ƙarkashinsa 2800K yana da kyau don continuous halogen cycle. Saboda haka, distance a cikin filamen da quartz bulb wall yana da kyau don take da temperature na quartz bulb wall mai kadan 1900K. Bulb wall yana da kyau da take da volume mai kadan don take da lamp yana sauti a cikin pressure mai kadan atmospheres. Duk da haka, pressure mai kadan a cikin bulb yana kawo karshe rate na evaporation na tungsten filament. A cikin bulb, nitrogen da argon yana da amfani don maintain pressure mai kadan a cikin ita. Saboda haka, lamp yana iya sauti a cikin temperature mai karkashi da mafi luminous efficacy don lokaci mai yawa. A yanzu, bromine an yi amfani a cikin most of the lamps, kuma iodine. Bromine shine colorless, amma iodine shine purplish tint.

Amfani da Tungsten halogen lamps

Tungsten halogen lamps yana da shapes mai kadan, amma suke da tubular da filamen oriented axially. Sune da double ended da single ended types. Two types are shown below.
Two types are shown below.

Tungsten halogen lamps yana bayar da correlated color temperature, excellent lumen maintenance da reasonable life. Tungsten halogen lamps yana da kyau don outdoor lighting application. Muhimman lokutan da suke amfani da su shine sports lighting, theater, studios da television lighting. Filamen na tungsten halogen lamps suna da mechanical stability da precision. Tungsten halogen lamps an yi amfani da su a spotlight, film projectors da scientific instruments. Types of Tungsten halogen lamps a market of low voltage tungsten filament lamps suna da 12, 20, 42, 50 da 75 Watts da suke sauti a cikin 3000K da 3300K. Lifespan na bi shine 2000 hours to 3500 hours.

Saboda optical projection equipments, halogen lamps an yi amfani da su, a yanzu, suke amfani da su a display lighting. Main part na tungsten halogen lamp shine small tungsten halogen capsule. Ita cemented into one piece, all glass reflectors are as the facets for controlling the beam optically. MR-16 lamp has multifaceted reflector with 2 inch diameter. It has slightly higher luminous efficacy than standard voltage incandescent lamps. Their size is smaller also and permit compact fixture.

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