Which type of air includes both outdoor air and recirculated air to ensure comfort in designated spaces?

The type of air that includes both outdoor air and recirculated air to ensure comfort in designated spaces is referred to as ventilation air. Ventilation air plays a critical role in maintaining indoor air quality and thermal comfort in various environments such as commercial buildings, homes, and industrial settings. By combining fresh outdoor air with recirculated air from within the space, ventilation systems dilute and remove indoor air pollutants while helping to regulate temperature and humidity levels.

This dual approach of utilizing both fresh and recirculated air helps not only in achieving adequate airflow but also in ensuring that energy efficiency is maintained. Proper ventilation can significantly impact the comfort and well-being of occupants by providing clean air and reducing the potential for the buildup of stale or contaminated air. In contrast, other air types listed, such as exhaust air and makeup air, serve specific functions that do not encompass both outdoor and recirculated air in the same way as ventilation air.