enclosed space. Its goal is to provide thermal comfort and acceptable indoorairquality. HVAC system design is a subdiscipline of mechanical engineering,
introduction of outdoor air into a space. Ventilation is mainly used to control indoorairquality by diluting and displacing indoor pollutants; it can also
impairment from impurities in indoorair breathed by test subjects who were not informed about changes in the airquality. Significant deficits were observed
standards to improve building services engineering, energy efficiency, indoorairquality, and sustainable development. ASHRAE was founded in 1894 at a meeting