Txij li thaum qhov kev tshawb pom ntawm UV germicidal efficiency nyob rau hauv 1901, ultraviolet tshuaj tua kab mob feem ntau tau ua los ntawm kev siv cov roj mercury qis.
Mercury tam sim no nyob rau hauv qis-siab mercury teeb, uas ua rau muaj kev txhawj xeeb txog kev sib kis ntawm ib puag ncig. Zoo li LED hloov ntawm qhov muag teev fluorescent, LEDs tau cia siab tias yuav yog ib qho kev siv tshuab ecologically benign. Kev ua tau zoo ntawm UV LEDs tam sim no qis dua li cov teeb hluav taws xob mercury tsawg, txawm li cas los xij lawv cov kev txhim kho sai txhua xyoo. Vim tias tsis muaj cov cuab yeej hloov pauv tau tsim, cov teeb hluav taws xob qis mercury yog li tshem tawm los ntawm RoHS Cov Lus Qhia rau kev siv tshwj xeeb kom txog rau thaum Lub Ob Hlis 24, 2027 (Khoom 4(a)). Yog tias nws tau pom tias tsis muaj kev siv thev naus laus zis hloov pauv tau tshaj li xyoo 2027, qhov kev zam no yuav raug ncua ntxiv. Puas xav tau kev txuas ntxiv? Qee daim ntawv thov tuaj yeem siv LEDs tam sim no, raws li Nichia, thiab yuav luag txhua daim ntawv thov yuav tuaj yeem ua tau thaum Lub Ob Hlis 2027.
Ntawm no, Nichia nthuav tawm qhov piv txwv tiag tiag hauv ntiaj teb uas UV LEDs tau tshawb nrhiav los ua cov tshuaj tua kab mob rau cov roj mercury qis.
Cov tshuaj tua kab mob saum npoo siv cov teeb hluav taws xob qis mercury → Case Studies of LED Adoption
Cov tshuaj tua kab mob saum npoo av, tshuaj tua kab mob hauv huab cua los ntawm cov purifiers, thiab cov tshuaj tua kab mob hauv dej thiab cov kav dej phwj tuaj yog tag nrho nrog rau thaj tsam ntawm UV tshuaj tua kab mob siv cov teeb hluav taws xob qis mercury. Kev tu cov khoom siv hauv kev lag luam khoom noj thiab ntim khoom yog ib qho piv txwv ntawm kev tua kab mob saum npoo. Hauv cov chaw ua zaub mov, cov thawv ntim tau ntim cov zaub mov tom qab raug UV teeb los tua kab mob sab hauv thiab txwv tsis pub cov kab mob loj hlob thiab kis cov zaub mov.
Ib qho piv txwv ntawm cov thawv ntim zaub mov raug UV hluav taws xob:
Lub teeb mercury uas tsis tshua muaj siab tso tawm lub teeb ultraviolet los ntawm sab saum toj ntawm cov thawv los tua kab mob hauv ntau lub ntim khoom noj ib zaug. Yog li ntawd, fused quartz yuav tsum tau siv los npog cov roj teeb uas muaj mercury uas tsis tshua muaj siab los tiv thaiv cov kab mob mercury thiab iav tawg thaum lub teeb tsis ua haujlwm.
Ib qho piv txwv ntawm hluav taws xob pom los ntawm saum toj no:
Hauv kev sib piv rau cov teeb hluav taws xob qis qis, LEDs yuav raug siv los irradiate tsuas yog cov khoom lag luam nrog UV teeb vim lawv cov teeb tsa thiab txoj haujlwm tuaj yeem raug xaiv thiab hloov kho, raws li qhia hauv daim duab irradiation saum toj no. Ntawm qhov tod tes, cov teeb hluav taws xob qis mercury emit teeb nyob rau hauv tag nrho cov lus qhia, nthuav tawm qhov chaw nruab nrab ntawm ib tus neeg ntim thiab lub teeb nraub qaum rau lub teeb UV ntxiv.
Tsis tas li ntawd, txij li cov teeb hluav taws xob qis mercury siv sijhawm ntev los hloov thiab tawm, lawv yuav tsum tau khaws cia "rau" txhua lub sijhawm. LEDs, ntawm qhov tod tes, muab qhov qhib / tawm sai sai, txhais tau hais tias lawv tsuas yog qhib thaum xav tau, muaj peev xwm txo qis kev siv hluav taws xob thiab CO2 emissions.
Raws li cov ntaub ntawv hais saum toj no, cov txiaj ntsig ntawm kev sib piv ntawm LEDs thiab cov teeb hluav taws xob qis mercury tau qhia hauv cov lus hauv qab no.
Cov txiaj ntsig ntawm kev kawm
Lub zog tawm tswv yim xav tau kom tau txais cov tshuaj tua kab mob tib yam hauv cov txiaj ntsig tiag tiag hauv qhov piv txwv kev tshawb fawb no yog 600W thiab 312W.
Nichia's UV LED 434C tau siv los ntsuas cov LED irradiance thiab efficiency.
Raws li Shikoku Electric Power CO., Inc., CO2 emission factor rau FY2021 yog 0.527t/MWh.
Piv nrog rau LEDs, uas muaj qhov ua tau zoo ntawm 5.4%, lub teeb hluav taws xob qis mercury muaj qhov ua tau zoo dua ntawm 22%. Txawm li cas los xij, LEDs tuaj yeem siv txog li 90% ntawm UV irradiation lawv tsim, thaum lub teeb hluav taws xob qis tsuas yog siv 9%. Yog li, piv rau cov teeb hluav taws xob qis qis, uas xav tau 600W hluav taws xob los muab cov tshuaj tua kab mob tib yam, LEDs xav tau 312W. Tsis tas li ntawd, LEDs tsuas tuaj yeem qhib tau thaum xav tau. Piv txwv li, yog tias cov teeb hluav taws xob qis qis tau tso rau 18 teev hauv ib hnub, LEDs tuaj yeem qhib rau 14 teev. Piv txwv tias txhua lub teeb siv rau 300 hnub, lub zog siv hluav taws xob qis qis nrog 600W ntawm cov khoom siv hluav taws xob yog 3.2MWh txhua xyoo, qhov LEDs nrog 312W ntawm cov khoom siv hluav taws xob siv 1.3MWh txhua xyoo, txo 60%. Tsis tas li ntawd, CO2 emissions raug xam siv CO2 emissions ntawm 0.527 tons ib 1 MWh ntawm lub zog. LEDs tsim 0.69 tons ntawm CO2 ib xyoos ib zaug piv rau 1.7 tons los ntawm cov teeb pom kev tsis tshua muaj mercury, uas yog 60% txo.
Txoj kev
Cov ntsiab lus
Cov yam ntxwv ntawm LEDs, xws li lawv lub siab radiant flux siv los ntawm kev xaiv illumination ntawm tsuas yog cov cheeb tsam uas xav tau thiab lawv cov peev xwm qhib / tawm tam sim, tau siv nyob rau hauv cov ntaub ntawv kawm no kom ua tiav cov txiaj ntsig tseem ceeb. Nichia tuaj yeem yog li qhia meej meej tias LEDs tuaj yeem ua haujlwm hloov tshuab rau mercury teeb nrog qis siab.
Sib nrug los ntawm cov piv txwv saum toj no, Nichia yuav koom tes nrog nws cov neeg siv khoom thiab cov neeg koom tes los tsim cov qauv siv LED cov yam ntxwv hauv lwm yam kev siv tshuaj tua kab mob, xws li tshuaj tua kab mob hauv huab cua thiab dej. Nichia yuav ua txhua yam los xyuas kom meej tias LED thev naus laus zis hloov cov roj mercury qis.
Tsis tas li ntawd, raws li daim ntawv qhia kev qhia, UV LED kev ua tau zoo tau zoo dua qub nyob rau xyoo tas los no. Kev kawm txuj ci tau nrawm vim tias muaj kev sib koom ua ke ntawm kev tsim kho kev cia siab rau LEDs uas tshwm sim los ntawm kev txwv ib puag ncig thiab kev xav tau los tawm tsam cov kab mob sib kis. Qee qhov xwm txheej, kev siv cov LEDs nyob rau hauv qhov chaw ntawm lub teeb mercury uas tsis tshua muaj siab yog twb tau ua tiav los ntawm kev tsim cov qauv tsim uas ua rau muaj peev xwm ntawm LED. Raws li Nichia, qhov no, ua ke nrog kev txhim kho zoo ntawm UV LEDs qhov kev ua tau zoo, yuav ua rau muaj kev sib tw loj dua, thiab UV LEDs yuav tau txais dav los ua ib qho kev hloov pauv rau cov teeb hluav taws xob qis hauv txhua qhov kev siv tshuaj tua kab mob thiab thaj chaw. Yog li ntawd, yuav tsis tas yuav txuas ntxiv RoHS kev zam dhau xyoo 2027.
Ntxiv rau kev ua haujlwm los daws cov kev txhawj xeeb hauv zej zog suav nrog kev tsim kom muaj mercury-free thiab carbon-neutral zej zog, Nichia yuav ua kom cov kev ua tau zoo ntawm LEDs.
