Puas yog LEDs Muaj Zog Muaj Zog? Puas yog nws txuag lub zog tiag tiag?
Before this, the lighting industry has never been so beautiful. Needless to say in the industry, under the general environment and trend of energy saving, emission reduction and green environmental protection, it is an industry consensus and the general trend that LED will become the mainstream light source of future lighting. Even in the street talk of the consumer market, when it comes to lighting, although most of them know little about it, no one knows about LED. This half is naturally due to the government's strong support and promotion, and the other half is due to the advantages and charm of LED technology itself.
Nyob rau hauv lub qhov muag ntawm cov pej xeem, raws li ib tug tshiab hom ntawm teeb pom kev zoo technology, LED tau pib sib npaug nrog lub zog txuag, thiab tsuas yog qhov teeb meem tam sim no zoo li tus nqi. Txawm nyob hauv Suav teb, tus nqi tsis muaj teeb meem ntxiv lawm (yog vim li cas txhua tus paub). Txawm li cas los xij, cov teeb ci LED puas muaj zog tiag tiag? Yuav ntsuas seb lub teeb LED puas muaj zog npaum li cas?
1. Lub luminous efficiency ntawm lub teeb qhov chaw
LED (Lub Teeb Emitting Diode) yog lub teeb -emitting diode, ib qho khoom siv -xeev semiconductor tivthaiv uas tuaj yeem hloov hluav taws xob hluav taws xob mus rau qhov pom kev pom, ib yam li cov tsoos incandescent thiab halogen teeb tom qab thermal hluav taws xob luminescence txoj cai , fluorescent teeb, mercury teeb, sodium teeb thiab kub teeb Halogen teeb siv tib lub hauv paus ntsiab lus ntawm cov pa tawm, LED nws tus kheej kuj sawv cev rau ib lub tshuab, lub teeb -emitting txoj cai.
Lub luminous efficiency ntawm lub teeb ci (feem ntau hu ua luminous efficiency): lub peev xwm ntawm lub cev luminous los hloov hluav taws xob lub zog rau hauv lub teeb pom kev, ntsuas los ntawm qhov piv ntawm luminous flux rau lub zog, hauv lm / w.
Raws li hom tshiab ntawm cov teeb pom kev zoo, LED thev naus laus zis yog ntau tshaj li cov khoom siv hluav taws xob ib txwm siv. Tab sis txawm li ntawd los, LED thev naus laus zis nws tus kheej muaj ntau yam teeb pom kev zoo, thiab nws tsis yog qhov tseeb hais tias cov teeb pom kev zoo ntawm LED muaj zog ntau dua -ntau dua li lwm qhov chaw teeb. Tsis yog scientific. Thaum peb tau nrog, peb yuav tsum pom tias lwm tus neeg yog Fabkis, Suav thiab Nyij Pooj li cas, thiab tib yam yog qhov tseeb rau cov khoom siv LED.
Qhov tseeb, los txiav txim seb lub teeb puas yog lub zog -txuag, nws yog ntau tshaj li qhov siv tshuab thiab lub teeb siv.
2. Kev siv hluav taws xob zoo
In addition to incandescent lamps and line voltage halogen lamps, other light sources need to be equipped with lighting appliances. Lighting appliances also have the problem of power utilization, that is, the ratio of the electrical energy used by the electrical appliances to drive the light source to emit light. Without considering the harmonics, the power factor λ is usually represented by cosφ. It doesn't matter if you don't understand these things. In short, the efficiency of lighting appliances usually needs to look at the power factor index.
Feem ntau cov tuam txhab lag luam tseem yuav muab cov txheej txheem kev ua haujlwm tsis zoo ntawm cov khoom siv hluav taws xob ntawm cov qauv khoom lossis ib nplooj ntawv, raws li qhia hauv daim duab hauv qab no, peb cov neeg tsim qauv tuaj yeem nug cov tuam txhab los muab cov kev ntsuas cuam tshuam.
3. Teeb pom kev zoo
Qhov kev ua tau zoo ntawm cov teeb yog yooj yim to taub. Hauv cov ntsiab lus yooj yim, nws yog qhov piv ntawm lub teeb tawm ntawm lub teeb mus rau lub teeb tawm los ntawm tag nrho cov teeb pom kev hauv lub teeb nyob rau hauv cov xwm txheej txheem, feem ntau hais los ntawm LOR.
LOR=luminous flux emitted los ntawm lub luminaire / luminous flux ntawm tag nrho cov teeb qhov chaw nyob rau hauv lub luminaire
Piv txwv li, rau ib tug zoo tib yam 318W teeb vaj huam sib luag, tag nrho luminous flux ntawm lub teeb qhov chaw yog 3600lm. Yog hais tias qhov ntsuas luminous flux ntawm lub teeb yog 1800lm, peb hais tias qhov ua tau zoo ntawm lub teeb yog 50 feem pua.
4. Teeb pom kev zoo
Leaving aside the light distribution and light utilization rate of lamps, and whether designers use lamps reasonably in the space (if the lighting design process is divided into three parts: light selection, light distribution and light use, our discussion today is limited to "selection". Light" part), to evaluate whether a lamp is energy-saving, it is necessary to combine the above three aspects to obtain the lamp efficiency:
Luminaireefficacy=luminous flux emitted by the luminaire/(light source power plus hluav taws xob poob)=luminous flux emitted by the light sourceLOR/(light source power plus hluav taws xob poob)
5. Puas yog LED teeb lub zog siv tau?
Tom qab qhia meej cov qauv rau kev ntsuas seb lub teeb puas yog lub zog-txuag lossis tsis, peb tuaj yeem txiav txim qhov zoo thiab qhov tsis zoo ntawm ob lub teeb no.
Ua ib lub hom phiaj ntawm 314W grille teeb ua piv txwv, thaum nws siv peb lub teeb 14W / 1200lm, nruab nrog ib qho -tube 14W ballast thiab ob lub-tube 214W ballast, lub zog hluav taws xob Nws yog 18 ntxiv rau 32.5=50.5W. Qhov ua tau zoo ntawm lub teeb ci ci yog LOR=70 feem pua, tom qab ntawd cov teeb pom kev zoo yog 360070 feem pua /50.5W=49.9lm/W.
Cov ntsiab lus
When we are in the "light selection" part of the design, the main thing is to choose the right light source, the right electrical appliances, and the right lamps. The consideration of energy efficiency is an important aspect.
When considering energy saving in the design scheme, it is not only about which technology is used and what light source is used, that is to say, don't think that LED will inevitably save energy, but also depends on the actual parameters of light source, electrical appliances and lamps. Samples and measurements can best see the problem.
From this, we can also see that it is very unreasonable to spend a watt of LEDs that are very popular now, because the owners purchase lamps and lanterns to buy "light", not "power". Using yuan/watt to measure LED, it is very likely to buy LED products with low luminous efficiency and no energy saving. If you only consider the amount of light emitted by the lamps, perhaps a better indicator to measure the economy is yuan/1,000 lumens, that is, how much light you buy for how much. Whether these lights are used or not is another matter.
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