Pangaweruh UVC

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Bisa cahaya UVC maéhan virus sareng baktéri?

Waktos: 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.

Teras, urang bakal ngajelaskeun sacara rinci what UVC lights are, how they work, their precautions for use and some commercial applications pikeun ngabantosan anjeun gaduh pamahaman anu jelas.


uvc light sterilization


Wha is UVC light?


Sakumaha urang terang, Sinar panonpoé mangrupakeun campuran énergi cahaya dina panjang gelombang anu béda.


Gelombang jarak ti 380 nanométer (nm) ka 780 nanométer (nm) disebut cahaya anu katingali, sedengkeun anu langkung ageung tina kisaran panjang gelombang disebut lampu teu katingal.

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 ka 400 nm

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

  • UV-B: 280nm ka 320nm

Éta tiasa ngubaran panyakit kulit. Tapi paparan teuing bakal ngabalukarkeun sunburn komo kanker kulit. Sareng ukur kurang ti 2% UVB tiasa ngahontal bumi.

  • UV-C: 200nm ka 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

Langkung pondok tina panjang gelombang, langkung kuat tanaga, tapi anu langkung lemah éta ditembus, langkung gancang leungitna.


Function of UVC light

Pangetahuan patali: Lampu UV anu mana anu pangsaéna?

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.

Sareng pangajen pasar malah ningkat tina 140,000,000 dolar AS kanggo diperkirakeun 500,000,000 dolar AS.

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.


Upami dosis UV henteu cekap, sababaraha virus ngan ukur samentawis leungiteun kagiatan, teras laun ngalereskeun struktur nyalira.


  • 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.

Ieu sababna urang kedah nganggo pamawa mirip sareng lampu disinféksi ultraviolet pikeun ngahontal disinfection.


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.

Janten teu gampang percanten sababaraha perusahaan nyarios "urang tiasa maéhan virus & baktéri", sakapeung éta ngan ukur basa marketing.

Urang kedah sadar yén ngan ukur efisiensi, waktos sareng biaya anu penting dina pilihan lampu UV urang.


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) Lampu disinféksi tradisional tradisional gedé (sakedik jangkungna 40cm atanapi saluhureun), éfisiénna rendah. Sumber cahaya 1W dasarna tiasa ngan ukur nutupan 1 méter pasagi rohangan.


(2) Cahya lampu tina lampu disinfeksi ultraviolét ngandung raksa, anu goréng pikeun lingkungan sareng kaséhatan upami dileupaskeun.

(3) Seueur lampu disinfeksi ultraviolét nyaéta lampu spéktrum lega kaasup UVC, UVA, sareng UVB, anu sigana ngahasilkeun ozon, ngakibatkeun gejala sapertos kacapean, batuk, dada, saraf, seueul, sareng rugi mémori.


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.


Kalayan ukuran ieu, tiasa nerapkeun seueur alat portabel anu nganggo fungsi disinfeksi:

(1) Parahu


Beungeutna anu kacemar sapertos ruangan rumah sakit sareng alat, ruang tamu, bandara, sareng ampir sadaya tempat umum atanapi barang pribadi.


(2) Cai


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.

Urang tiasa nganggo solusi UVC dina sistem puri cai atanapi sistem tisu.


(3) Hawa


Pembersih hawa ngaleupaskeun 99.97% partikel hawa udara, kumaha oge, saringan henteu ngaluarkeun organisme mikro patogén leutik, sapertos influenza.

Urang tiasa nganggo solusi UVC dina sistem purifikasi hawa atanapi sistem saluran hawa komérsial komérsial.


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.


Pasal patali: Pitunjuk tukang pamungkas dina pameseran Lampu UV Anjeun


Solusi LED UVC Éfisién pikeun Minisplits


Solusi UVC éfisién pikeun Unit HVAC