UV Lamps in HVAC Systems Fight Spread of Disease

 

The use of ultraviolet (UV) light in disinfecting and sterilizing surfaces is gaining as part of the fight against the spread of the novel coronavirus and to control health acquired infections (HAIs) in hospitals. HAIs are a serious problem for hospitals, especially when stretched at capacity and short on staff.  Even prior to the COVID-19 pandemic, nearly 1 in 25 patients were estimated to contract an HAI from a hospital stay, some with dire consequences. Protecting patients and staff against HAIs including drug-resistant bacteria and serious viruses with effective hospital disinfection is top priority for hospitals and healthcare facilities. 

Nearly everything that is in a hospital room from all the surfaces to airborne particles, medical equipment and the clothing and hands of healthcare workers can serve as a reservoir and vector for transmitting opportunistic pathogens.  While contaminated surfaces and insufficient hand hygiene are the primary modes of transmission, water and air supply systems also provide a mode of transmitting harmful pathogens.

UVC HVAC Air Purification Systems

While maintaining regular cleaning and manual disinfection practices is crucial in hospitals, along with proper hand hygiene, germicidal UVC lamps in moving air applications are proven to disinfect and purify the air. Ultraviolet Devices, Inc, UVDI, offers HVAC air disinfection and purification systems with advanced UV technology. UV air disinfection eliminates viruses and bacteria with a kill rate up to 99% and UV air purification destroys volatile organic compounds (VOCs) and foul odors.

UV moving air applications include two basic systems for UVGI as a supplemental air cleaning measure:

Upper room air irradiation – UVGI lamps are wall mounted above an occupant’s level, usually 8 feet above the floor and irradiate the airflow in the room.  Upper room UVGI has been used in tuberculosis wards to inactivate TB and is also effective in patient rooms, emergency rooms, waiting rooms, hallways and anywhere patients could potentially spread airborne germs.

HVAC Duct Irradiation – UVC germicidal lamps placed inside HVAC and air handler ducts disinfect recirculated or outside air. UVC lamps in air handling units effectively eliminate microscopic organisms that are too small to filter yet are easily disinfected with UV light.

LightSources offers high-quality UVC lamps found in UV sterilization systems for hospitals including air disinfection UVGI mounted, HVAC and portable systems  Our UVC robot lamps are helping hospitals to improve patient and staff safety and prevent the spread of disease with effective surface sterilization.

LightSources provides UV lamp solutions to OEMs of all sizes, with high-quality UV lamps custom designed to meet your exact specifications. Our UVC germicidal lamps are found in water, air and surface sterilization systems worldwide. Contact us to speak with an engineer about our many UVC germicidal lamp solutions.  

Does Ultraviolet Radiation Kill the COVD-19 Virus?

 

Ultraviolet radiation is proven to kill viruses and bacteria and there have been many questions about the efficacy of UV light killing the novel coronavirus.  The current pandemic with the outbreak of COVID-19 is caused by the coronavirus SARS-CoV-2, and people want to know if they can purchase UV lights for their home to help protect themselves and their family with effective sterilization.  Hospitals have been using UVC lamps in surface sterilization devices and UVC robots to further sterilize patient rooms and surfaces.

The U.S. Food and Drug Administration, FDA, answers your questions about UV Lights and Lamps: Ultraviolet-C Radiation, Disinfection, and Coronavirus. 

UVC Radiation and the SARS-CoV-2 Coronavirus

UVC radiation is proven to destroy the SARS-Coronavirus, which is a different coronavirus than what causes COVID-19.  SARS-CoV-2 is the virus that causes COVID-19 and given the newness of the virus there are many ongoing research studies to verify accurate dosage of UVC exposure including exposure duration and distance, which is key to effective sterilization with germicidal UVC lamps. 

Studies like this one by Boston University are showing promise with results that show a 99% reduction of the SARS-CoV-2 virus when UVC radiation is dosed at the right level.  This study shows that UV light will deactivate the coronavirus in 6 seconds when dosed at 5 mJ/cm2.  Another study conducted by Biological Consulting Services in Feb.2020, shows effective elimination of SARS-CoV-2 virus and many other stubborn microorganisms in UVGI irradiation with 99.99% effectiveness with 15 minutes of exposure.  With surface sterilization at direct exposure and UVGI air irradiation, hospitals can significantly improve the health of patients and prevent the spread of disease. 

Hospitals using UVC light to eliminate the spread of disease and consumers wishing to purchase UVC lamps to sterilize surfaces at home must remember that direct exposure is key.  UVC radiation will only kill microorganisms that are directly exposed to the UVC radiation emissions.  Inactivation of the virus on surfaces will not be as effective if blocked by shadows, dust, soil or organic compounds which absorb the UV light and reduce the efficacy of sterilization on the surface. 

LightSources Offers High-Quality UVC Germicidal Lamps

LightSources is a leading global supplier of high-quality, high-tech UVC germicidal lamps found in numerous applications worldwide including hospital UV disinfection devices.  We design, engineer and manufacture UVC germicidal lamps to emit the exact wavelength required for your application needs.  We offer a wide selection of standard output, high-output, compact, specialty, amalgam lamps, ozone lamps and more.  

LightSources is a valuable supplier to OEMs worldwide with quality UVC germicidal lamps for air, water and surface sterilization.  We follow strict quality control procedures as part of our ISO9001:2015 registration, delivery quality lamp products on time.  Contact us to speak with an engineer about how LightSources can improve your supply chain with high-tech UVC germicidal lamps.