[Explanatory Material] Air Inflow and Outflow in Contaminated Spaces through Drain Pipes of Air Conditioning Units

A document explaining the actual measurement using the PFT method (Passive Ventilation Measurement Method).

As a measure to prevent hospital-acquired infections transmitted through the air, HEPA filters and room pressure control are commonly used to remove and discharge airborne droplets and dust particles. This document presents presents finding that highlight the potential for cross-contamination of air between patient rooms through the drain pipes of air conditioning units - an issue that had not previously been actively addressed - and reports confirming the effectiveness of countermeasures. [Contents (excerpt)] ■ Introduction ■ Traps for preventing Airflow In and Out ■ Overview of Measurement Experiments ■ Experiment 1: Airflow In and Out Between Adjacent Patient Rooms ■ Experiment 2: Airflow In and Out Between Patient Rooms on Different Floors ■ Conclusion *For more details, please refer to the PDF document or feel free to contact us.

Waterproof tape, adhesive, drain, protective panel