METHOD FOR DETERMINING A FRESH AIR VOLUME FLOW IN A VEHICLE FOR TRANSPORTING PEOPLE, AND DEVICE FOR CARRYING OUT THE METHOD

A method for determining a fresh air volume flow in a vehicle for transporting persons. A water vapor mass flow is introduced into, or generated in, a passenger compartment of the vehicle. The air humidity in the passenger compartment of the vehicle is measured and, once a quasi-stationary air humidity has been reached, the fresh air volume flow is calculated by considering the following: a fresh air volume flow [m/h]; a mass of the evaporated water in the compartment [kg/h]; a number of people in the space; a water mass flow produced per person; a density of the fresh air (humid air) [kg/m]; a is specific air humidity of the fresh air [kg/kg]; a density of the ambient air (humid air) [kg/m]; and a specific air humidity of the ambient air [kg/kg]. There is also described a device for carrying out the method.