Procházení Acta Polytechnica. 2024, vol. 64, no.1 dle data publikování

Zobrazují se záznamy 1-8 z 8

    • Assessing the efficacy of flat-plate solar collectors using nanofluids in the climatic context of Kirkuk city, Iraq 

      Autor: Hussein, Adnan M.; Mohammed Ali, Hussein Hayder; Ali, Zahraa
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)
      Solar energy is a key renewable energy source. Research and development have focused on enhancing the heat transfer coefficient, heat gain, and practical efficiency of solar systems. The aim of this study is to evaluate ...

    • Reverse engineering of pump as turbine for CFD analysis 

      Autor: Souček, Jiří; Bílková, Eva; Nowak, Petr
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)
      Reverse engineering (RE) using 3D scanning is already a relatively technologically simple and cost-effective method. For water turbines, this is particularly true for RE of larger machines. With microturbines, there is a ...

    • Problems with reinforced concrete industrial floors with regard to subsoil swelling 

      Autor: Pruška, Jan; Šedivý, Miroslav; Anderle, Vojtěch
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)
      Most of the problems associated with open cracks in reinforced concrete industrial floors do not arise from technological indiscipline in the execution or exceeding the permitted floor load, but from the geotechnical profile ...

    • Digital model of automated unmanned aerial vehicle with edge computing application for railway reconnaissance 

      Autor: Tulembayeva, Aigul; Ashirov, Shayakhmet; Makarov, Evgenij; Seitbattalov, Zhexen
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)
      In the last decade, unmanned aerial vehicles have been widely used in various civil and military field operations. Most modern drones are manually controlled by an operator and require decision making, which requires ...

    • The classification of eye diseases from fundus images based on CNN and pretrained models 

      Autor: Benbakreti, Samir; Benbakreti, Soumia; Ozkaya, Umut
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)
      Visual impairment affects more than a billion people worldwide due to insufficient care or inadequate vision screening. Computer-aided diagnosis using deep neural networks is a promising approach, it can analyse and process ...

    • Outdoor performance investigation of a thermoelectric cooler-integrated solar air heating collector 

      Autor: Segnon, Josué R.; Njoku, Howard O.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)
      Solar air heating systems are continuously being improved by combining them with other energy conversion technologies. In this paper, outdoor tests were carried out on a thermoelectric heat-pumping solar air heater (TE-SAH), ...

    • On the vortex identification within a linear blade cascade - an experimental research 

      Autor: Flídr, Erik
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)
      This paper deals with the identification of the individual vortical structures within a linear blade cascade based on H criteria. The experimental data obtained from the pressure measurement at the cascade outlet were ...

    • Reduction of torque pulsation in ultralight helicopter transmission 

      Autor: Dudnik, Vitaly
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)
      Usually, 1–2 seats helicopters use piston engines. One of their disadvantages is a significant torque pulsation on the engine shaft. The main reason for such fluctuations is the change in parameters during the engine’s ...