Puas yog LED Txoj Kev Teeb Zoo Tshaj Plaws Siab Sodium Teeb?

Puas yog LED txoj kev teeb zoo dua li cov teeb pom kev siab sodium?

Tam sim no, Tuam Tshoj tab tom tsim kom muaj kev txuag nyiaj thiab ib puag ncig-phooj ywg zej zog, thiab lub tswv yim ntawm " teeb pom kev ntsuab" tau maj mam nce. Nrog kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis thiab kev txhim kho sai ntawm cov khoom siv hluav taws xob semiconductor siv thev naus laus zis, cov khoom siv hluav taws xob tsis tshua muaj hluav taws xob LED tau siv dav hauv cov teeb pom kev zoo toj roob hauv pes, thiab lub zog loj LED txoj kev teeb tau nyiam ntau thiab ntau dua los ntawm txhua yam.

Qhov loj tshaj qhov sib txawv ntawm LED teeb thiab high-pressure sodium teeb yog xim kub thiab xim rendering Performance index. LED teeb muaj qhov dav ntawm cov xim kub nrog rau qhov siab dua xim rendering Performance index. LED cheeb tsam teeb muaj yooj yim intrinsic tshaj li high-pressure sodium teeb.

1. Kev sib piv ntawm luminescence txoj cai

1.1 Lub hauv paus ntsiab lus luminous ntawm LED teeb

LED (Lub Teeb Emitting Diode), lub teeb-emitting diode, yog ua los ntawm III-IV pawg tebchaw. Nws yog ib qho khoom siv hluav taws xob semiconductor uas tuaj yeem hloov hluav taws xob ncaj qha rau hauv lub teeb. Lub plawv ntawm LED yog semiconductor nti. Lub semiconductor nti yog tsim los ntawm peb qhov chaw. Ib feem yog P-hom semiconductor, nyob rau hauv uas lub qhov dominate, thiab lwm kawg yog N-hom semiconductor. Thaum cov tam sim no ua rau lub nti los ntawm cov hlau, cov electrons thiab qhov yuav raug thawb mus rau hauv lub qhov dej quantum. Nyob rau hauv quantum qhov dej, cov electrons recombine nrog lub qhov thiab ces emit zog nyob rau hauv daim ntawv ntawm photons. Qhov no yog lub hauv paus ntsiab lus ntawm LED teeb emission. Lub wavelength ntawm lub teeb kuj yog xim ntawm lub teeb, uas yog txiav txim los ntawm cov khoom tsim PN hlws ris.

1.2 Lub hauv paus ntsiab lus luminous ntawm HPS teeb

Lub high-pressure sodium teeb siv hluav taws xob los tsim ib qho arc ntawm cov electrodes ntawm ob qho kawg ntawm arc raj. Vim qhov kub ntawm lub arc, sodium amalgam nyob rau hauv lub raj yog rhuab thiab evaporated rau mercury vapor thiab sodium vapor. Cov electrons tawm los ntawm cathode cuam tshuam thiab tso tawm thaum lub sijhawm txav mus rau anode. Cov atoms ntawm cov khoom tau txais lub zog los tsim ionization lossis excitation, thiab tom qab ntawd rov qab los ntawm lub xeev zoo siab mus rau hauv av; los yog hloov los ntawm lub xeev ionized mus rau lub xeev zoo siab, thiab tom qab ntawd rov qab mus rau hauv lub xeev hauv av nyob rau hauv lub voj infinite. Lub sijhawm no, lub zog ntau dhau yog tso tawm hauv daim ntawv ntawm lub teeb hluav taws xob. Ces muaj teeb. High-power LED txoj kev teeb pom kev zoo yog ib yam tshiab ntawm txoj kev teeb pom kev zoo uas paub txog kev xav tau teeb pom kev zoo los ntawm kev teeb pom kev ntawm LED pawg los ntawm DC tsis tshua muaj hluav taws xob. Nws muaj cov yam ntxwv ntawm lub siab ci thiab zoo xim rendering. Tsis tas li ntawd, vim hais tias cov tswv yim ntawm txoj kev teeb pom kev zoo yog qhov tsis tshua muaj hluav taws xob DC, nws tuaj yeem yog Kev sib xyaw ntawm lub hnub ci zog ua rau hnub ci sab nraum zoov coj txoj kev teeb pom kev zoo rau txoj kev teeb pom kev yav tom ntej.

2. Hais txog kev siv hluav taws xob tsom xam thiab kev sib piv

Lub teeb pom kev zoo ntawm ob lub zog yuav tsum tau muab piv rau ntawm qhov chaw mus txog tib lub teeb pom kev zoo (brightness) thiab cov qauv teeb pom kev zoo sib xws. Vim tias lub raj muaj zog siab (250 ~ 400W) ntawm lub teeb siab sodium teeb muaj qhov ua haujlwm siab luminous, nws tuaj yeem ncav cuag 130 ~ 1401m / W, thaum lub teeb pom kev zoo ntawm lub raj qis (100 ~ 150W) yog li 80 ~ 100 lm / W, thaum tam sim no high-power LED 1W LED raj feem ntau yog siv nyob rau hauv coj txoj kev teeb, thiab lawv luminous efficiency yog ntau dua. Yog li ntawd, nws yog ib advisable mus soj ntsuam high-power coj txoj kev teeb thiab low-power street teeb nyias nyias.

2.1 High-power (Ntau dua lossis sib npaug ntawm 250W) txoj kev teeb

High-pressure sodium teeb muaj lub teeb pom kev zoo, xav txog peb yam xws li ballast poob, teeb pom kev zoo, thiab kev siv lub teeb channel. Yog hais tias tag nrho cov efficiency yog xam raws li 0.55, lub teeb efficiency ntawm lub sodium teeb yog hais txog 70 ~ 75 1m / W; thiab qhov zoo luminous efficiency ntawm sab nraum zoov coj teeb txoj kev, qhov zoo tshaj plaws domestic enterprise tau mus txog 1701m / W. Yog li ntawd, rau cov teeb pom kev zoo, LEDs muaj zog ntau dua li sodium teeb.

2.2 Lub hwj chim qis (tsawg dua lossis sib npaug ntawm 150W) txoj kev teeb

Qhov zoo luminous efficiency ntawm sodium teeb (nrog rau tag nrho cov efficiency ntawm 0.55) yog hais txog 45 ~ 551m / W, thaum lub teeb coj txoj kev tseem xam ntawm 170 lm / W, lub LED muaj peev xwm ncav cuag 75 feem pua. txuag hluav taws xob ntau dua li sodium teeb. Txog li 80 feem pua.

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