Simulation von Aerosolen im Gebäude sowie der Partikeldeposition im menschlichen Respirationstrakt

authored by: Jan Stefan Drzymalla
supervised by: Dirk Bohne
Abstract: This thesis deals with the simulation of aerosols in buildings. The possible deposition of aerosol particles in the human respiratory tract is being investigated as a function of building and indoor air quality. The aim is to contribute to the improvement of indoor air quality and the assessment of health risks associated with exposure to airborne aerosol particles. For this purpose, a methodical simulation approach for the model-based estimation of aerosol concentrations in indoor air and particle deposition in the human respiratory tract is being developed. In the first part of this thesis, the use case "Indoor Aerosol Modeling" is described using the cooperative working method Building Information Modeling (BIM). Among other things, this defines the necessary process steps for an aerosol simulation and analyzes the integrability of the underlying balancing and modeling approaches in the open data format Industry Foundation Classes (IFC). Furthermore, the "BIM4IAM" method is presented, which describes the implementation of the previously defined use case in the BIM environment. The application is based on the example of a fictitious scenario in which the lung deposition of aerosol particles is investigated. The theoretical investigation shows that particle deposition in the human respiratory tract can be assumed, which can also lead to a reduction in the aerosol concentration in the indoor air. The second part of the thesis examines the accuracy of the simulation model in the form of a theoretical and experimental validation. Part of this is a sensitivity analysis, which investigates the influence and sensitivity of the model input parameters. It can be seen that the aerosol dose deposited in the airways depends on various parameters, but is significantly influenced by the particle size and the level of exertion. In men, the maximum total deposition (98.52 %) is for particles with an aerodynamic diameter of 0.001 μm, which are inhaled nasally during light activity. In addition, the methodological simulation approach is characterized by good performance, which is confirmed by the comparison between simulation and measurement results. Keywords: Aerosols, particle
Organisation(s): Sustainable Building Systems
Type: Doctoral thesis
No. of pages: 190
Publication date: 19.06.2024
Publication status: Published
Sustainable Development Goals: SDG 3 - Good Health and Well-being
Electronic version(s): https://doi.org/10.15488/17540 (Access: Open)