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Are you working with UV-C LEDs for Disinfection? If so, tell me about it.

rscasny

UV-C lamps are being replaced by UV-C LEDs for disinfection treatment purposes. There are many use cases including consumer, buildings, industrial, medical, among others.

Are you working with UV-C LEDs? If so, can you talk about it? element14 is planning on some activities around it. I'd like to get a sense of the community's experience with it. Thanks. 

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  • Our R&D team at BiBEAT LTD developed a UVC room sterilizer for medical use under the supervision of our mentor Prof. Siddique-e Rabbani few months ago. This can be used in Operation Theater or ICU room to disinfect surroundings after the Operation is over, or a patient left the ICU. The aim is to reduce the HAI [Hospital / Healthcare Associated Infections]. We achieved great results while collaborating with a renowned hospital to test the device. We have used 254nm germicidal lamps of in total 180W in different configurations.

    Room size: 13ft x 10ft x 8.5ft (approx)
    Microorganisms painted at 5 different points

    After 30 minutes of exposure, all samples had more than 8 log reduction in concentration.

    However, during the design considerations we found that there was divergence of light beams out of a UVC tube lamp. The two corners of the tube lamp have dark zones where essentially no or little light reaches from the tube lamp directly. This forced us to change our initial design to increase the number of tubes in different angels to achieve optimum result in every direction. LED gives a better uniform light beam than lamp, I hope. Also it will be much more efficient in terms of energy and wavelength. But definitely that increases the cost.

    Another advantage will be - tube lamps are fragile. LEDs have higher longevity and will be easier to handle or replace. The intensity of the exposure can be optimized according to the room size or necessity. Which is not easy in case of tube lamps.

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  • Our R&D team at BiBEAT LTD developed a UVC room sterilizer for medical use under the supervision of our mentor Prof. Siddique-e Rabbani few months ago. This can be used in Operation Theater or ICU room to disinfect surroundings after the Operation is over, or a patient left the ICU. The aim is to reduce the HAI [Hospital / Healthcare Associated Infections]. We achieved great results while collaborating with a renowned hospital to test the device. We have used 254nm germicidal lamps of in total 180W in different configurations.

    Room size: 13ft x 10ft x 8.5ft (approx)
    Microorganisms painted at 5 different points

    After 30 minutes of exposure, all samples had more than 8 log reduction in concentration.

    However, during the design considerations we found that there was divergence of light beams out of a UVC tube lamp. The two corners of the tube lamp have dark zones where essentially no or little light reaches from the tube lamp directly. This forced us to change our initial design to increase the number of tubes in different angels to achieve optimum result in every direction. LED gives a better uniform light beam than lamp, I hope. Also it will be much more efficient in terms of energy and wavelength. But definitely that increases the cost.

    Another advantage will be - tube lamps are fragile. LEDs have higher longevity and will be easier to handle or replace. The intensity of the exposure can be optimized according to the room size or necessity. Which is not easy in case of tube lamps.

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