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Laboratory Ventilation

The purpose of laboratory ventiliation systems is to minimize the risk of chemical exposure and fire hazard, as well...

Recent Posts

Can Space Volume Adversely Affect the Dilution of Contaminants?

What is Air Changes per Hour (ACH)? Clean air is supplied to indoor spaces to dilute the concentration of contaminants to a certain acceptable level. The requirement for such ventilation airflow rate is generally specified in terms of Air Changes per Hour (ACH). It is...

Laminar Diffusers – Do They Really Work?

Laminar diffusers are often employed in cleanrooms, hospital operating rooms, laboratories, and similar other spaces where high level of cleanliness is desired. These air supply outlets (diffusers) are designed to provide unidirectional flow–often referred as...

Hospital Operating Rooms – HVAC Configuration Matters!

This is a follow-up to the previous post on airflow patterns in hospital operating room (OR). Previous Computational Fluid Dynamics (CFD) study of a legacy HVAC design of a hospital OR indicated that the supply airflow rates or air change rates (ach) have a little...