Browsing Energetický ústav by Title
Now showing items 1-20 of 125
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Airflow Measurement of the Car HVAC Unit Using Hot-wire Anemometry
(EDP Sciences, 2016-03-28)Thermal environment in a vehicular cabin significantly influence drivers’ fatigue and passengers’ thermal comfort. This environment is traditionally managed by HVAC cabin system that distributes air and modifies its ... -
Analysis of fiber deposition using automatic image processing method
(EDP Sciences, 2013-04-09)Fibers are permanent threat for a human health. They have an ability to penetrate deeper in the human lung, deposit there and cause health hazards, e.g. lung cancer. An experiment was carried out to gain more data about ... -
Application of Positron Emission Tomography to Aerosol Transport Research in a Model of Human Lungs
(EDP Sciences, 2013-04-09)Positron Emission Tomography (PET) is a convenient method for measurement of aerosol deposition in complex models of lungs. It allows not only the evaluation of regional deposition characteristics but also precisely detects ... -
Applications of the discontinuous Galerkin method to propagating acoustic wave problems
(SAGE Publishing, 2017-06-16)The purpose of this article is to demonstrate that the discontinuous Galerkin method is efficient and suitable to solve linearized Euler equations, modelling sound propagation phenomena. -
Automatic biomass boiler with an external thermoelectric generator
(Czech Technical University in Prague, 2014-02-23)Abstract. This paper presents the design and test results of an external thermoelectric generator that utilizes the waste heat from a small-scale domestic biomass boiler with nominal rated heat output of 25 kW. The ... -
Bulk viscosity of water in acoustic modal analysis and experiment
(EDP Sciences, 2018-06-04)Bulk viscosity is an important factor in the damping properties of fluid systems and exhibits frequency dependent behaviour. A comparison between modal analysis in ANSYS Acoustics, custom code and experimental data is ... -
Calculation of stress and deformation in fuel rod cladding during pellet-cladding interaction
(Czech Technical University in Prague, 2015-12-18)The elementary parts of every fuel assembly, and thus of the reactor core, are fuel rods. The main function of cladding is hermetic separation of nuclear fuel from coolant. The fuel rod works in very specific and difficult ... -
Calibration of the Heat Balance Model for Prediction of Car Climate
(EDP Sciences, 2012-04-16)In the paper, the authors refer to development a heat balance model to predict car climate and power heat load. Model is developed in Modelica language using Dymola as interpreter. It is a dynamical system, which describes ... -
Calibration of Virtual Testing Stand of the Car Cabin using climatic chamber tests
(EDP Sciences, 2015-05-06)The aim of our research is to calibrate and verify of the software Virtual Testing Stand of the Car Cabin using climatic chamber tests. The Virtual Testing Stand is standalone executable software developed in Matlab for ... -
Capture efficiency measurement of pollutants over a workbench with the reinforced slot exhaust system
(EDP Sciences, 2013-04-09)The paper deals with the measurement of the capture efficiency of pollutants by the slot reinforced exhaust system situated in two positions over the workbench. The slot reinforced exhaust system, which is known as REEXS, ... -
Case study comparing Fiala-based thermophysiological model and PHS Index with experimental data to predict heat strain in normal and protective clothing
(JVE International, 2021-02-20)The use of protective clothing under extreme conditions leads to heat stress with undesired consequences on human physiology. As a prevention measure, thermal indices and thermophysiological models have been developed. ... -
Character of the cavitation erosion on selected metallic materials
(EDP Sciences, 2013-11-22)Proposed article dealing with the analysis of the type of the damage caused by the cavitation erosion according to the selected metallic material of the specimen. As is shown in the article, the type of the damage has a ... -
Characteristics of droplet motion in effervescent sprays
(EDP Sciences, 2014-03-25)Time resolved droplet size and velocity measurement was made using Phase-Doppler anemometry in an effervescent spray at GLR of 6 % and operation pressure drops 21 – 52 kPa. The spray shows a size dependent variation of ... -
Characteristics of the pipe junction with 2.4 cross-section area ratio for the case of the flow division.
(EDP Sciences, 2013-04-09)There are presented characteristics of the pipe junction for the case of the flow division in this paper. The pipe junction consists of one straight pipe, with the diameter 50 mm and one adjacent pipe with diameter 32 mm. ... -
Characteristics of the T-junction with the equal diameters of all branches for the variable angle of the adjacent branch
(EDP Sciences, 2013-11-19)Basic aim of this paper is to bring out the characteristics of the T-junctions. T-junction consists of the one straight pipe and the adjacent branch which can be inclined under different angle. These characteristics were ... -
Characteristics of Turbulent Particle Transport in Human Airways under Steady and Cyclic Flows
(Elsevier, 2012-06-15)Motion of monodispersed micron-sized particles suspended in air flow was studied on transparent model of human airways using Phase-Doppler Particle Analyser (P/DPA). Time-resolved velocity data for particles in size range ... -
Characterization of the cavitating flow in converging-diverging nozzle based on experimental investigations
(EDP Sciences, 2014-03-25)Cavitation phenomena occuring in converging-diverging nozzle (Venturi tube) are described in the paper. A closed test circuit with possibility to control both flow rate and static pressure level were used. Loss coefficient ... -
Comparison of CFD simulations and measurements of flow affected by coanda effect
(EDP Sciences, 2012-04-16)The article deals with experimental research and numerical simulations of specific phenomena in fluid flows called Coanda effect (CE), which has numerous important engineering applications. Although many researchers have ... -
Comparison of different configurations of Phase Doppler Analyser
(EDP Sciences, 2016-03-28)A phase Doppler anemometry (PDA) technique is widely used in experimental fluid mechanics to measure size and velocity of particles in the fluid flow. Even though this method is common in experimental fluid mechanics, there ... -
Comparison of methods for evaluation of aerosol deposition in the model of human lungs
(EDP Sciences, 2014-03-25)It seems to be very convenient to receive a medicine by inhalation instead of injection. Unfortunately transport of particles and targeted delivery of a drug in human respiratory airways is very complicated task. Therefore ...