Ujuzi wa UVC

Nyumba>rasilimali>Ujuzi wa UVC

Je! Taa nyepesi ya UVC inaweza kuua virusi na bakteria?

Muda: 2020-04 21-

For decades, scientists have been devoted to the research of UVC light for disinfection, especially when the UVC market is huge and the human pursuit of health is more important than ever before.


More and more reports indicate that UVC light products can kill viruses and bacteria higher than a 99.9% rate, which directly leads to the crazy purchase of UVC products.


But in fact, few people know exactly what UVC light is and whether UVC light is useful for sterilization.

Ifuatayo, tutaelezea kwa undani what UVC lights are, how they work, their precautions for use and some commercial applications kukusaidia kupata uelewa wazi.


uvc light sterilization


Wha is UVC light?


Kama tunavyojua wote, Mwanga wa jua ni mchanganyiko wa nishati nyepesi kwa mawimbi tofauti.


Miinuko ya umeme kutoka 380 nanometers (nm) hadi nan780ers (XNUMXm) huitwa nuru inayoonekana, wakati ile iliyo zaidi ya upeo wa wimbi huitwa mwangaza usioonekana.

Ultraviolet light is a type of invisible light ranging from 10 nm to 400 nm. And the function of UV light depends on the range of wavelength.

  • UV-A: 320nm hadi 400 nm

It makes up the majority of UV light reaching the Earth. And it can damage our skin.

  • UV-B: 280nm hadi 320nm

Inaweza kutibu magonjwa ya ngozi. Lakini mfiduo mwingi utasababisha kuchomwa na jua na hata saratani ya ngozi. Na chini ya 2% tu ya UVB inaweza kufikia dunia.

  • UV-C: 200nm hadi 280nm

It is particularly good at sterilizing. But its penetration ability is very weak. Before reaching the ground, all UVC light will be absorbed by ozone in the atmosphere. That means, standing under the sun is useless for sterilization.

  • In summary: UV light Rule

Mtiririko wa nguvu, nguvu ya nguvu, lakini dhaifu kupenya, kasi ya kutoweka.


Function of UVC light

Related Knowledge: Which UV light is the best?

Because UVC light can be used for sterilization, coupled with the epidemic environment, the market demand for UVC products can be described as Crazy now.

Na hesabu ya soko iliongezeka kutoka dola za Kimarekani 140,000,000 hadi dola 500,000,000 za Kimarekani.

The big question right now may be how does UVC light work and can it kill viruses & bacteria?


How does UVC light work?


Before the deep study of UVC light, I thought all sunlights have the sterilization effect. Bacteria and viruses will be killed by "sunburn" or heat.

But that's not the truth.


  • Sterilization Principle of UVC light


In fact, UVC light will destroy the DNA or RNA of the bacteria & viruses, without the use of chemicals, making them inactive and unable to reproduce.

Since the lifespan of single bacteria & viruses is very short, once they lose the reproduce ability, it means death. So the purpose of sterilization has been achieved.


In scientific research, it has been found that UVC light can use very little time to finish the disinfection process and make most microbes reduction up to 99.99%.


Research of UVC light

Based on this information, UVC light is believed to be quiet effective at killing viruses and bacteria.


However, the vitality of different viruses and bacteria are different. Some bacteria&viruses may be injured once they are exposed to UVC light, while others are not.


Ikiwa kipimo cha UV haitoshi, virusi vingine vitapoteza shughuli kwa muda, na kisha polepole ukarabati muundo wao wenyewe.


  • Special requirements of UVC lights

At present, there are no specific figures to show how much UV dose flu viruses needs to be killed. Maybe 1,085 mJ / cm2 or 3,640 mJ / cm2 . Anyway, a huge number.

You may be wondering if we stand under the sunlight containing UVC light, can we be disinfected by it?

Unfortunately, the answer is no. Although the sterilization ability of UVC light is extremely strong, the penetration ability to objects (including air) is extremely weak. Before reaching the ground, all UVC light will be filtered out by ozone in the atmosphere.

Hii ndio sababu tunahitaji kutumia kibeti sawa na taa za disin kasoro ili kufikia disinitness.


Please pay attention to the fact that most UV lamps on the market are only designed to meet the common standard, that is, 40mJ / cm2 UV dose required for a 99.99% inactivation rate.


Study result of UVC light

Further considering the decay of UVC light in the air, those lamps make no sense for disinfection.

Kwa hivyo usiamini kwa urahisi kampuni nyingine ikisema "tunaweza kuua virusi na bakteria", wakati mwingine ni lugha ya uuzaji tu.

Lazima tugundue kuwa ufanisi tu, wakati na gharama ndio mambo muhimu katika uchaguzi wetu wa taa za UV.


Are ultraviolet lamps containing uvc light safe?


Although UVC light can indeed kill viruses and bacteria, there are various problems with household ultraviolet disinfection lamps on the market:

(1) Taa za disin kasiko za jadi ni kubwa (angalau urefu wa 40cm au juu), ufanisi mdogo. Chanzo cha taa ya 1W LED inaweza kimsingi kufunika mita 1 za mraba tu za nafasi.


(2) Chanzo nyepesi cha taa nyingi za disin kasiki zina zebaki, ambayo ni mbaya kwa mazingira na afya ikiwa imetolewa.

(3) Taa nyingi za disinokufa nyingi ni taa za wigo mpana pamoja na UVC, UVA, na UVB, ambazo zinaweza kutokeza ozoni, na kusababisha dalili kama vile uchovu, kukohoa, kukazwa kifua, kichefuchefu, na kupoteza kumbukumbu.


Applications of UVC light

From this perspective, the main application scenarios of UVC light should be industrial types to maintain safe.


Applications of uvc light


To make better use of UVC light, we have developed a new lighting technology, which can make the UVC energy in a very small size with 3.5mm x 3.5mm without mercury.


Na ukubwa huu, inaweza kutumika katika vifaa vingi vya kushughulikia vyenye kazi za kutofautisha:

(1) Uso


Nyuso zenye uchafu kama vile vyumba vya hospitali na vifaa, vyumba vya kuishi, viwanja vya ndege, na karibu maeneo yote ya umma au vitu vya kibinafsi.


(2) Maji


Mercury-free UVC light is a clean and safe water disinfectant, UVC LED based solutions tackle these pathogens without impacting the water's smell, taste or mineral contents.

Tunaweza kutumia suluhisho la UVC kwenye mfumo wa utakaso wa maji au mfumo wa choo.


(3) Hewa


Watakaso wa hewa huondoa 99.97% ya chembe zinazopakwa hewa, hata hivyo, vichungi haviondoe viumbe vidogo vya pathogenic, kama mafua.

Tunaweza kutumia suluhisho la UVC katika mfumo wa utakaso wa hewa au mfumo wa hali ya hewa ya kibiashara.


How to use UVC light

All in all, UVC light can indeed kill viruses and bacterial if we choose the right system for specific applications.


Makala inayohusiana: Mwongozo wa mnunuzi wa mwisho kwenye ununuzi wako wa taa za UV


Ufanisi wa UVC suluhisho la Minisplits


Suluhisho bora la UVC kwa Viti vya HVAC