Qhov Sib Txawv Ntawm Cov Fluorescent Thiab Led Teeb Thiab Qhov Zoo Ntawm Led Teeb

Nrog kev nruam ntawm kev siv tshuab hauv lub neej, LED teeb tsa fluorescent tau los ua ib lub teeb ci thaum ntxov nkag mus rau chav. Vim hais tias muaj ntau cov ntsiab lus piv nrog cov roj fluorescent, muaj ntau yam khoom siv hauv cov khoom siv, thiab cov lag luam kub heev, uas nrov heev ntawm cov neeg siv khoom. Hnub no peb tuaj ua ke kom pom qhov sib txawv ntawm cov teeb pom kev zoo ntawm lub teeb thiab coj teeb, kuv vam tias yuav pab txhua tus.

Peb feem ntau tuaj mus rau hauv kev sib cuag nrog lub tswvyim ntawm lub teeb ci hluav taws xob thiab teeb liab. Tab sis koj puas to taub qhov txawv ntawm cov teeb no? Hnub no peb yuav tuaj ua ke kom pom qhov txawv ntawm cov fluorescent thiab coj teeb.

Fluorescent lamps, tseem hu ua Fluorescent lub teeb, ua haujlwm ntawm lub hauv paus ntsiab lus tias lub raj muaj fluorescent yog ib lub tswb roj kaw tawm. Cov roj loj hauv cov raj yog argon roj (xws li 氖 neon lossis 氪 krypton) thiab cov pa roj yog li ntawm 0.3% ntawm qhov chaw. Kuj muaj ob peb tee tshuaj mercury - ua ib kab ntawm mercury vapor. Mercury atoms account rau ib txhiab ntawm tag nrho cov roj carbon atoms. Lub fwj tshuaj fluorescent yog lub mercury atom uas tawm ntawm lub teeb, thiab lub ultraviolet lub teeb yog tawm ntawm cov txheej txheem ntawm cov roj tawm (lub ntsiab wavelength yog 2537 angstroms = 2537 × 10-10 m). Kwv yees li ntawm 60% ntawm lub zog siv tau hloov mus rau ultraviolet lub teeb. Lwm lub zog hloov dua siab tshiab kom sov. Lub fwj tshuaj fluorescent tuaj yeem pom teeb ci los ntawm absorbing ultraviolet lub teeb los ntawm cov khoom siv fluorescent rau sab hauv sab hauv lub raj. Ntau hom phosphors emit txawv pom lub teeb. Feem ntau, qhov ua tau zoo ntawm kev hloov ultraviolet lub teeb rau hauv pom lub teeb yog li 40%. Yog li, qhov ua tau zoo ntawm lub teeb hluav taws xob yog txog 60% x 40% = 24% - ob zaug uas tib lub hwj chim tungsten lub teeb txawb.

Lub teeb Emitting Diode, tseem hu ua diode-emitting diode, yog ib qho khoom siv hluav taws xob lub xeev uas siv hluav taws xob ncaj qha mus rau hauv lub teeb. Lub plawv ntawm lub LED yog ib qho khoom siv hluav taws xob. Ib qho kawg ntawm cov wafer nrog rau lub yas dhos, ib qho kawg yog tus ncej tsis zoo, thiab lwm qhov kawg txuas nrog lub ncej ntawm lub hwj chim, kom tag nrho cov wafer yog encapsulated los ntawm epoxy cob. Lub semiconductor wafer muaj peb ntu, ib qho yog ib hom P-hom semiconductor, qhov twg lub qhov taw tes, thiab lwm qhov kawg yog ib qho N-hom semiconductor, qhov twg nws yog electron, thiab nruab nrab yog feem ntau yog ib tus quantum zoo 1 mus rau 5 mus. Thaum twg tam sim no yog siv rau wafer los ntawm ib lub xaim, electrons thiab qhov raug muab tso rau hauv vector sub-zoo. Nyob rau hauv lub quantum zoo, lub electrons recombine nrog lub qhov, thiab ces lub zog yog tawm hauv daim ntawv ntawm photons. Qhov no yog txoj cai ntawm LED illumination.

zoo dua

1. Kev ua kom zoo tshaj plaws: Cov luminous efficiency ntawm cov roj fluorescent yog li 55-80 lm / W (qhov kev hloov ntawm Philips T8 fluorescent luminous yog 72lm / W), thaum lub luminous efficiency ntawm LEDs yog siab tshaj 100 lm / W. Tsis ntev los no, Cree's XLampXP-G's luminous efficiency tau mus txog 130 lumens / W, thiab yuav ua kom zoo dua yav tom ntej. Qhov txawv ntawm ob yog tam sim no ze li ntawm doubled. Nyob rau hauv lub neej yav tom ntej, nws muaj peev xwm mus cuag ntau tshaj peb zaug.

2. Kev siv zog ntawm lub luminaire: Qhov ua tau zoo ntawm lub luminaire tsuas yog hais txog qhov zoo siv cov nyom zoo, vim tias lub teeb pom kev zoo ntawm lub teeb muaj 360 degree, thiab lub teeb uas tawm hauv qhov kev taw qhia yog tsis siv. Vim li no, cov roj fluorescent feem ntau siv lub tshuab ua xim dawb kom muaj kev cuam tshuam ib feem ntau ntawm cov teeb pom kev rov qab. Feem ntau, cov roj fluorescent muaj kev ua haujlwm ntawm tsuas yog 70% xwb. Lub teeb taws ua kom lub teeb pom kev zoo siab tshaj 120 degree, yog li ntawd tag nrho cov teeb pom kev zoo. Txawm hais tias qee zaus qhov 120 degree illumination angle muaj zog, nws tseem yog qhov tseem txaus. Thiab lub kaum sab xis ntawm lub teeb pom kev zoo tuaj yeem kho thaum tsim nyog. Raws li tau hais ua ntej, kev ua kom pom ntawm Philips 'T8 fluorescent teeb yog 72lm / W, thiab 36W fluorescent teeb ua 2592 lumens, tab sis qhov kev ua haujlwm zoo luminous tsuas yog 70%, yog li qhov lumens zoo muaj 1814.4 lumens, thiab cov luminous efficiency ntawm LED tau tshaj 130lm / W. Piv txwv 100 lm / W, ntev li 18W, nws muaj peev xwm ncav cuag 1800 lumens, uas yog, ntev li ntawm ib nrab ntawm lub hwj chim ntawm lub teeb pom kev zoo tuaj yeem muaj qhov ci ntsa iab tib yam. Tsis tas li ntawd, qhov kev pom zoo ntawm cov LEDs nce xyoo tuaj.

3. Qhov hluav taws xob muaj zog siab Vim tias txhua lub teeb tshwj tsis yog lub teeb cig tamsis yuav tsum muaj lub hwjchim tshwjxeeb, qhov ua tau zoo ntawm lub hwjchim yuav cuam tshuam cov teebmeem ntawm tag nrho cov teeb. Coj Philips '36WT8 fluorescent teeb ua piv txwv. Nws cov tso zis tawm hwj chim yog 36W, tab sis vim yog nkag tau ntawm cov khoom sib nqus hlau nplaum, qhov ntsuas tau ntsuas yog 42.4W, qhov yog, cov tub ntxhais inductance poob 6.4W, kev ua haujlwm raug txo mus txog 85%, feem ntau cov tub ntxhais hlau tub ntxhais inductor zog noj saum 10W, qhov zoo tshaj yuav yog qhov qis tshaj 0.512. Lub zog ntawm LEDs feem ntau yog siab li 90%, thiab 18W LED fais fab teeb yuav tsum tsuas yog 20W ntawm lub zog tawm tswv yim. Lub zog ua haujlwm kuj tseem tuaj yeem ncav cuag 0.9 lossis tshaj saud. Nws txuag tau tshaj li ib nrab ntawm cov hluav taws xob zoo dua li fluorescent teeb, uas txhais tau hais tias lub teeb muaj 18-watt LED fluorescent teeb yuav hloov tau lub teeb ntim ntawm 36-watt fluorescent.

4. Lub neej ntev: Ib qho hluav taws xob tsim hluav taws xob uas tsim hluav taws xob LED zoo nkauj tuaj yeem mus txog 50,000 xuab moos. Lub neej ntawm lub teeb pom kev zoo yog feem ntau tsuas yog 5,000 xuab moos (qee lub teeb hluav taws xob muaj lub neej tsuas yog 300 teev xwb). Qhov txawv ntawm ob yog ze li 10 npaug. Qhov zoo tshaj plaws ntev lub neej fluorescent yaj kuj tsuas yog 10,000 xuab moos, thiab qhov txawv ntawm ob yog tsib zaug.