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Recent Submissions

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    A simulation-based case study of deciduous tree impacts on office building daylighting
    (Vysoké učení technické v Brně,Fakulta stavební, 2025-05-12) Hakszer, Tomáš; Hanuliak, Peter
    The presence of full-grown trees near buildings affects daylight availability and reduces glare. This study presents dynamic simulations that assess how deciduous trees at various distances (10 m, 15 m, 20 m) from the façade of an office building impact Useful Daylight Illuminance (UDI) and Daylight Glare Probability (DGP). The results show that closer trees (10 m) reduce glare significantly but also decrease desirable daylight levels to a large extent. Careful tree placement is crucial to balance daylighting and visual comfort in buildings. By considering trees early in the design process and utilising available calculation methods, we can effectively integrate them so as to enhance both the building and its surroundings.
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    Selection of a suitable C02 sensor for indoor air quality assessment
    (Vysoké učení technické v Brně,Fakulta stavební, 2025-05-12) Kučírek, Pavel; Šikula, Ondřej
    This article compares eight types of CO2 sensors using NDIR technology for accuracy, response time, and acquisition costs. The experiment included static and dynamic tests in a chamber and a duct. The Testo 935 and Rotronic CL11/CP11 sensors showed high accuracy and fast response, while the Winsen MH-Z16 offered the best performance-to-cost ratio. Other tested sensors – NetAtmo, Comet S3532, LaskaKit SCD41 and MH-Z14 exhibited inaccuracies, making them unsuitable for scientific applications.
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    Analysis of air temperatures in the cavity of double-skin facades
    (Vysoké učení technické v Brně,Fakulta stavební, 2025-05-12) Husáriková, Dominika; Dolníková, Erika; Lopušniak, Martin
    Non-optimal position of the blinds in double-skin facades can lead to overheating or heat loss. Spring temperature fluctuations and varying solar radiation provide ideal conditions for analysis, highlighting the impact of cavity geometry on thermal performance. This study examines the impact of blind positioning on the cavity air temperature in a double-skin facade during spring. Experimental measurements under different airflow modes showed that a smaller airflow circuit (mode A) produced greater temperature variations (0-7 K), whereas a larger circuit (mode D) resulted in smaller fluctuations (0-2 K).
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    Effect of obstacles on the crawl space airflow
    (Vysoké učení technické v Brně,Fakulta stavební, 2025-05-12) Pobucká, Slávka; Kučírek, Pavel; Žajdlík, Tomáš; Šuhajda, Karel
    One type of building foundation is a crawl space. This system is widespread in Scandinavia, but in recent years it has been used in the Czech Republic. A crawl space is a building foundation system where there is an air gap between the building and the ground. Both the design of the structure and the proper use is important for the proper functioning of the crawl space. Any obstacle can affect the airflow in the crawl space. This paper deals with simulations of airflow and age of air with the placement of obstacles in the crawl space.
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    Analysis of water evaporation from the the odor trap using 3D printing technology
    (Vysoké učení technické v Brně,Fakulta stavební, 2025-05-12) Sokol, Martin; Peráčková, Jana
    The design of foul water stacks with direct ventilation in high-rise buildings is accompanied by hydraulic assessment, based on calculating pressure resistance of odor traps with the smallest water seal height. One of the important factors in this calculation is to consider evaporation of water from the trap, which significantly reduces its pressure resistance. This article deals with the experimental measurement of water evaporation from a trap, followed by detailed analysis.