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Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 25
Tímr, Jan , Mužík, Václav
Role of Simulation of Power Output in the Design of Small-scale Hydro Power Plant

Article focuses on importance of time power-output simulation performed in Matlab in order to identify real hydroelectric potential in selected locations of river flows in the Czech Republic. The difference of simulation and the usual total generated power in a time-period might play&#x...

Knedlík, Michal , Rot, David
Development of hardening machine and intelligent control

This article focuses on introducing the developed hardening machine based on induction heating. This machine differs significantly from conventional solutions mainly due to its extensive measuring system, which gives us a complete overview of what is happening during the process. Furthermore,...

Mašata, David , Škoda, Radek , Noháčová, Lucie
The potential of the TEPLATOR application in the central europe region

The innovative emissions-free concept of future district heating source TEPLATOR was introduced in 2020 by a group of researchers from CTU in Prague and UWB in Pilsen in the Czech Republic. TEPLATOR will use already spent nuclear fuel assemblies for a clean and economical heat...

Skálová, Jana , Vlas, Tomáš , Mašata, David
Effect of the Ionizing Radiation Dose on Histone H2AX

In case the radiation dosimeters are not available, biological dosimetry represents an important method to estimate the absorbed dose of the exposed individuals during nuclear events. Nevertheless, the eukaryotic DNA is constantly exposed to exogenous and endogenous factors. Apart from the i...

Kotlan, Václav , Hamar, Roman , Slobodnik, Karel , Dolezel, Ivo
Modeling of temperature patterns and hardness of surfaces obtained by additive technique

Temperature patterns and hardness of surfaces produced by laser cladding is modeled. The mathematical model includes the description of all important physical phenomena taking part in the process. Experimental ...

Rot, David , Knedlík, Michal , Jiřinec, Jakub , Hajek, Jiří , Kožený, Jiří , Podhrazky, Antonín
Cost reduction opportunities in induction surface hardening processes for smaller diameter cylindrical loads

This article focuses on the possibilities of improving the efficiency of induction surface hardening (ISH) processes using a specialized spray-quench device. This quench is fabricated using 3D printing, and the load is ...

Jiřinec, Jakub , Raková, Lenka , Rot, David
Controlled Ventilation of Interior Spaces Using a Central Recuperation Unit

A common way of ventilating indoor spaces for more significant buildings is to use a central recuperation unit. In contrast to the decentralized recuperation unit, the system must be equipped with &...

Jiřinec, Jakub , Knedlík, Michal , Rot, David
Possibilities of Using an Energy Surplus of Photovoltaic Power Plants

Nowadays, the installation of photovoltaic power plants on the roof of houses is becoming more and more common. Compared to earlier times, the surplus electricity to the grid is not wel...

Olkhovskiy, Mikhail , Müllerová, Eva , Martínek, Petr
Reference Signal Processing for Aging State Recognition

n this work we presented the results of the experiment in which a reference signal was used for determining degradation level of cable insulation. A set of reference signals was constructed using programing language. Onwards, each&#...

Burian, Ondřej , Škoda, Radek
Design and optimization of non-supercritical CO2 thermal power cycle for "P2H2P" energy storage system

Most of the current research and development of CO2 cycles for power to heat heat to power (P2H2P) energy storage systems are focused on application s of supercritical CO2 cycles . However, this work is focused on alternative application of CO2 power cycle with standard (...

Zedan, Ousama Ahmed Abdalla , Haller, Rainer , El-Refaie, El-Sayed Mohamed , Abd Elrahman, Mohamed K.
Partial discharge behavior on solid- air interfaces at AC stress condition

Partial discharge (PD) is one of the major factors that damage dielectric materials in medium and high voltage components. Therefore, partial discharge evaluation is generally used to observe the status of electrical insulation in high and medium voltage components used in the performan...

Síťař, Vladislav , Raková, Lenka , Hruška, T. , Vysloužil, Tomáš
The usage of the power load as a physical diagram for electric vehicle charging modelling

The development of electric vehicles (EVs) brings a lot of new problems from the point of view of the electrical grid. Electric vehicles (EV) charging causes an impact load on the distribution grid, which is often non-symmetrical, and can reach high levels in relevant parts&#x...

Bělík, Milan , Noháčová, Lucie
Particular silicon type photovoltaic cells prolonged degradation

This paper focuses on analysis of prolonged degradation process of photovoltaic cells of different technologies based on silicon. All silicon type PV cells tend to have some specific degradation through the operational life. The degradation can originate from material issues of the esse...

Lovecký, Martin , Závorka, Jiří , Jiřičková, Jana , Škoda, Radek
Neutron absorber for VVER-1000 final disposal cask

The recent increasing demand for better nuclear fuel utilization requires higher enriched uranium fuels which is a challenge for spent fuel handling facilities in all countries with nuclear power plants. The operation with higher enriched fuels leads to reduced reserves to legislative a...

Zeman, Michal , Fořtová, Anna , Škoda, Radek
TEPLATOR DEMO: Basic design of the primary circuit

The TEPLATOR is an original way of district and industrial heating using nuclear power using spent nuclear fuel from nuclear power plants. The spent nuclear fuel is the one that did not reach its regulatory and design limits. This fuel can be taken either from spent ...

Klímek Gincelová, Kristýna , Lovecký, Martin , Škoda, Radek
Development of neutron source for nuclear power plant decommissioning

During the decommissioning of nuclear power plants, one of the most important opera-tions is the appropriate classification of radioactive waste. Radioactive waste from the operationcovers a wide range from low-level waste to high-level waste. In addition to the spent nuclearfuel, a signific...

Fořtová, Anna , Zeman, Michal , Jiřičková, Jana
TEPLATOR: Residual heat dissipation using energy storage

TEPLATOR” stands for an innovative concept for district and process heating using already irradiated nuclear fuel from commercial nuclear powerplants (NPPs). There are several variants for TEPLATOR, one of which being a TEPLATOR DEMO. The TEPLATOR DEMO is operating at atmospheric pressure,&#...

Peltan, Tomáš , Vilímová, Eva , Škoda, Radek
Natural uranium as alternative fuel for TEPLATOR

The TEPLATOR is an innovative solution for district heating using nuclear energy. It is a special thermal reactor with specific arrangement of the reactor core with 55 fuel assemblies which is moderated and cooled by heavy water and operated at atmospheric pressure with low ou...

Škarohlíd, Jan , Burian, Ondřej , Fořtová, Anna , Zeman, Michal , Škoda, Radek
Thermal energy storage TEPLATOR: Technology, utilisation and economics

Generally, energy storage is a very current topic as renewable sources of energy produce cheaper but unpredictable energy. Energy storages became more common not even for electric but also for heat production. Because of stronger and smarter control systems and consumption predictions e...

Závorka, Jiří , Lovecký, Martin , Škoda, Radek
Basic design of the TEPLATOR core - construction

The study shows the base optimization of the TEPLATOR core. One of the most difficult challenges for this concept is dealing with irradiated fuel assemblies. Because spent nuclear fuel has insufficient reactivity, the main aim of this study is to investigate various effects on ...

Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 25