Compiled by Eamonn Ryan from the 3rd SAIRAC Johannesburg Tech Talk online presentation by Edward Erasmus on the topic ‘Guided Approach to Applying UV-C to Mechanical Ventilation Systems’. This is an extension of the summary published in RACA August, and is Part 4 of a six-part series.
Addressing sick building syndrome with UV technology. Image by freepik
Edward Erasmus, represents Sani UV-C, a company that specialises in UV-C application used across various applications including cold rooms, vehicle transportation, HVAC systems, and water systems.
Q: What is the best mechanical methodology for treating coils to ensure longevity and effectiveness?
A:
- Preventative maintenance: Regular maintenance is key to keeping HVAC coils efficient and clean. Traditionally, this involved chemical treatments such as colloidal silver or hydrogen peroxide fogging to remove mould.
- UV integration: Installing UV lights offers a chemical-free alternative that reduces the frequency of deep cleaning. UV lights keep coils cleaner for longer, minimizing mold growth and maintaining air quality.
- Ongoing cleaning: Even with UV lights, periodic scrubbing and washing remain necessary. However, UV lights extend the interval between these cleanings, enhancing overall system hygiene and efficiency.
UV lights can be particularly beneficial in older buildings, shopping centers, and facilities with high foot traffic. Ensuring that these spaces are equipped with the right UV technology helps maintain air quality and reduces the need for extensive cleaning and maintenance.
Q: What safety training is available for technicians handling UV installations?
A: We provide comprehensive documentation and training for all UV fixtures, including safety glasses, warning signs, and detailed installation instructions. It’s essential for clients to share detailed building and system information to ensure proper guidance and safe, effective installations.
Q: Addressing sick building syndrome with UV technology.
A: That’s a great point about Sick Building Syndrome (SBS). Many older buildings indeed have issues such as mold, outgassing from old paints (often lead-based), and outdated HVAC systems. These factors contribute significantly to SBS, causing occupants to experience various health problems.
Modern HVAC standards, especially in industries like pharmaceuticals, have evolved significantly. New filter specifications, such as EPM 1, 2.5, and 10, aim to improve air quality by capturing finer particulates. Coupling these filters with UV systems enhances pathogen control, ensuring a healthier indoor environment.
