Essentially, VENT can be instructed to work with standard sea level air or to adjust air quantities and properties as dictated by the psychrometric air conditions. In achieving balanced static pressures at junctions, VENT allows the designer to quickly experiment with the effects of changing a duct size, fitting type, branch entry angle, hood data, or even a blast gate. VENT allows the designer to decide on the preferred way of balancing static pressures for each junction. VENT even provides the option of adjusting the cfm values of converging duct sections to achieve a static pressure balance. VENT calculates extremely fast and performs extensive error checking of the exhaust duct system.
All input data is checked at the time of entry so that no improper data can be entered.
All data is saved to disk as it is entered. The general project data includes the date, project location, client, designer, and project name, the elevation, room conditions, duct material data, and fitting database. A duct section can include any combination of duct runs and fittings. Hoods, collectors, and fans are entered as occurring at a particular node number. Hoods require a design cfm, duct entry loss factor, minimum duct velocity, slot data, and additional loss data.