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Collection's Items (Sorted by Submit Date in Descending order): 1 to 10 of 10
Lovecký, Martin , Závorka, Jiří , Vimpel, Jan
VVER-1000 fuel assembly model in CAD-based unstructured mesh for MCNP6

Geometry models for Monte Carlo transport codes have been using standard constructive solid geometry (CSG). The standard approach is using analytical equations for defining surfaces from which spatial cells are constructed. Both union and intersection operators are available, therefore, arbitrary ...

Bělík, Milan
Detection and prediction of photovoltaic panels malfunctions

This article discusses issues of photovoltaic panels malfunctions and failures. Different detection methods are applied on 300 real installations to identify origin, quantity and time progress of most common malfunctions. This paper focuses only on operation failures while malfunctions generated ...

Bělík, Milan
Influence of auxiliary mounted passive solar systems on thermal comfort in office building

This article discusses the influence of passive solar systems auxiliary mounted in office building on thermal comfort. Applicable measurement methods are compared on real passive solar systems including the elimination and correction of instrumentation uncertainities. The main chapter deals with ...

Bělík, Milan
Automated data acquisition for electrical power engineering

This article describes evaluation and application of low cost data acquisition device for selected tasks in electrical power engineering. The first part discusses theoretical and technical limits of NI PCI-6221 DAQ. Following chapter inscribes application for current / voltage measurement an...

Závorka, Jiří , Lovecký, Martin , Škoda, Radek
Fuel pebble optimization

The pebble bed reactor is randomly filled with thousands of spheres with fuel and moderator elements known as pebbles. Each fuel pebble contains thousands of coated TRISO particles stochastically embedded in the graphite matrix. Compared to PWR reactors with a regular lattice of fu...

Vajnar, Vladimír
Posouzení spolehlivosti návrhu a provozu vypínačů vvn/zvn na základě výsledků mezinárodních průzkumů spolehlivosti

This paper deals with the topic of high voltage circuit breakers’ reliability in relation to theirs design and service conditions. The motivation for the subject comes from multiple failures analyses and continuous efforts to maintain power systems safe and reliable. The paper contains&...

Paslavský, Bohumil
Měření V-A charakteristiky izolace statorového vinutí generátorů a rozdíly v metodice diagnostických laboratoří

The description of differences between measurements methods leakage current are in this paper. Differences between laboratories are in number of test level, time on test level and quantity of reading from the instruments. Analysis of differences searched better process for measurement of...

Jiřinec, Jakub
Měření jednotek zpětného získávání tepla

The purpose of the paper is to describe the measurement system for heat recovery unit. A long-term measurement of the indoor environment parameters was performed in a classroom equipped with Whisperair heat recovery unit produced by 2VV. The main observed parameter was the evolutio...

Hromádka, Aleš
Posouzení využitelnosti protitlakové a kondenzační turbíny v kogeneračních teplárnách

This paper is focused on the assessment of suitability of both possible turbines, which can be operated in current co-generation power plants. Pros and cons of both turbines are described and summarized in the main part of the paper. The assessment is based on real requir...

Hrbek, Jan , Mészáros, Bence
Závislost rychlosti proudění taveniny v ose indukční kelímkové peci na elektrických parametrech induktoru

The paper describes a mathematical model of induction crucible furnace. The main purpose of the article is to study influence of inductor frequency and electric current on axial melt velocity. The material used for calculation is Wood’s metal. The considered problem contains electromagn...

Collection's Items (Sorted by Submit Date in Descending order): 1 to 10 of 10