The ventilation and air-conditioning project consists of a ventilation system and an air-conditioning system.The ventilation system is composed of blower, air duct, air duct components, muffler, etc. The air-conditioning system consists of air-conditioning cold and heat sources, air handlers, air conveying pipes and distribution, as well as automatic control and adjustment of indoor temperature, humidity, air velocity and cleanliness.The main function of the ventilation system is to supply and exhaust air, such as smoke prevention and exhaust system, positive pressure air supply system, civil air defense ventilation system, kitchen exhaust fumes, bathroom exhaust, etc., through the connection of air ducts and components, and adopt anti-vibration and noise reduction measures to achieve dust removal , Detoxification, cooling purpose.The main function of the HVAC system is to achieve air supply and exhaust, refrigeration, heating, humidification, dehumidification, air purification and other items through air treatment, improve air quality, and meet indoor requirements for temperature, humidity, airflow speed and cleanliness. Air-conditioning cold source adopts various types of chillers; heat source adopts heat pump type cold and hot water units, geothermal, electric heaters, boiler heating, etc.; blowers are used for air supply and exhaust; air-conditioning water is controlled by pumps and pipe systems; and central air-conditioning system and Packaged Terminal Air Conditioner equipment distinction.Xingchang Fan’s HVAC Air Purification & Sterilization manufacturer, relying on decades of fan design and manufacturing experience, combined with ultraviolet sterilization and disinfection technology, is in developmentMajor breakthroughs have been made in the fields of central air-conditioning dynamic disinfection system.