HVAC system requirements for protection against epidemics similar to Covid-19

Tuberculosis and in some cases, flu, colds other airborne diseases. Since research is one of the biggest concerns causing influenza pandemics, most surrounding aerosol contamination revolves around environmental influences on virus. Many literatures suggest that transmitted primarily through close contact, such as exposure to large respiratory droplets, direct mouth-to-mouth contact short-term infectious aerosols. Diffusion can be accelerated or controlled by heating, ventilation air conditioning (HVAC) systems. Researches continue advances state knowledge specific techniques control disease transmission HVAC systems, including rates, airflow regimes, filtration, ultraviolet germicidal irradiation (UVGI). In this paper three methods Airborne Infectious Diseases are discussed, namely droplet inhalation core. An extensive literature review many papers was conducted diseases spread several different ways viruses. This targets indirect well viruses known from air. And he focused preventive systems for these targets. will give idea support further engineering controls reduce transmission.