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 3 of a six-part series.
UV installations in HVAC systems offer significant benefits in terms of air quality and system efficiency. Freepik.com
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. The presentation had moved to a Q&A session
Q: What are the heat load considerations?
A: UV Lamp Heat Output: UV lamps typically operate at around 38°C. While there may be a slight impact on heat in large coil areas, it is usually minimal as most of the energy is directed towards air and surface bioload. Installing UV units in ducting systems is generally more energy-efficient. This setup reduces the overall heat load compared to coil installations, ensuring better performance with lower energy consumption.
Q: What is the main function of fresh air in ducted systems, and how does it impact the overall space?
A:
- Pathogen reduction: Fresh air helps dilute and remove pathogens from the return air, reducing the risk of airborne transmission.
- Air quality improvement: Introducing fresh air ensures a constant supply of clean air, which is crucial for maintaining indoor air quality.
- Energy efficiency: Properly managed fresh air in ducted systems can lead to more efficient temperature control and reduced energy consumption.
UV installations in HVAC systems offer significant benefits in terms of air quality and system efficiency. However, ensuring proper safety measures, understanding the differences between various system types, and managing fresh air effectively are crucial for optimal performance.
Q: What safety training is available for technicians handling UV installations?
A: We provide detailed documentation and training for all our UV fixtures. This includes instructions on proper handling, safety measures, and the necessary equipment to protect technicians. It’s essential that clients share detailed information about their buildings and systems to enable us to provide tailored guidance and ensure safe and effective installations.
