Nataša Štirn, M.Sc., QA Manager and Co-Owner at Klimer, Slovenia, recently presented an innovative case study at the ASHRAE CEIC 2024 conference in Athens. Her presentation showcased the implementation of a Contamination Control Strategy (CCS) in alignment with Annex 1 requirements, which not only optimized energy consumption by reducing air volume flow rates but also emphasized the critical role of local airflow patterns around processes and workflows.

A key finding of the project was that Air Change Rates (ACR) alone do not guarantee effective cleanroom flushing quality. Instead, achieving proper mixing of “first air” with existing air at critical points within the cleanroom is essential. This approach led to significant reductions in both air volume flow rates and energy costs, without any compromise to product quality metrics. Additionally, microbiological control results showed marked improvement after implementing these changes.

A critical component of the success was the investigation and assessment of existing airflow patterns around processes and workflows. Smoke studies, conducted with MicroRite’s advanced equipment, played a pivotal role in identifying and analyzing these critical locations. MicroRite’s technology, which ensures neutral buoyancy, allowed for precise detection of areas needing improvement in airflow, supporting a more robust control strategy.

This case study highlights the potential for substantial energy savings in cleanroom environments while enhancing contamination control—a promising development for industries where energy efficiency and product quality are paramount.