Which type of ventilation involves airflow through open windows and doors?

Natural ventilation refers to the process of airflow that occurs through openings such as windows and doors in a building, relying primarily on passive means rather than mechanical systems. This type of ventilation is crucial in welding environments, as it helps to dilute and remove potentially harmful fumes and gases generated during the welding process. By allowing fresh air to enter and circulate while letting contaminated air escape, natural ventilation can significantly improve air quality without the need for complex setups or equipment.

In contrast to natural ventilation, systems like enforced or mechanical ventilation actively use fans or blowers to create airflow, thus providing controlled ways to manage the air within a space. Understanding these differences is essential for ensuring safety and effective airflow in welding practices.