The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 17, 2026
Filed:
Aug. 06, 2021
Siemens Mobility Gmbh, Munich, DE;
Gerhard Reiss, Krefeld, DE;
Alexander Hildebrandt, Bochum, DE;
Siemens Mobility GmbH, Munich, DE;
Abstract
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.
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