Poslední příspěvky

  • Theoretical evaluation of night sky cooling in the Czech Republic 

    Šíma, Jiří; Šikula, Ondřej; Košútová, Katarína; Plášek, Josef (Elsevier, 2014-01-22)
    Energy necessary for cooling of building in summer season makes a big part of energy required for building operation. Redundant heat removal in summer can be realized in various ways. One of possible methods, mainly in ...
  • Hybrid Roof Panels for Night Cooling and Solar Energy Utilization in Buildings 

    Šikula, Ondřej; Vojkůvková, Petra; Šíma, Jiří; Plášek, Josef; Gebauer, Günter (Elsevier, 2015-08-28)
    The aim of this contribution is to evaluate the usability of solar hybrid panels, which were originally optimized for heat load removal from buildings by radiation against the night sky, for water preheating. First we ...
  • The Effect of Shielding Barriers on Solar Air Collector Gains 

    Šikula, Ondřej; Plášek, Josef; Hirš, Jiří (Elsevier, 2013-08-22)
    The paper deals with numerical simulations of the impact of location and orientation of the solar air collector located on the roof of a building and on its thermal performance. The solar collector is used to preheat an ...
  • Simulation of Deposition the Corrosion Waste in a Water Distribution System 

    Jeleníková, Ivana; Šikula, Ondřej; Peráčková, Jana (EDP Sciences, 2013-04-09)
    In water distribution systems can be found particles of rust and other mechanical contaminants. The particles are deposited in locations where the low velocity of water flow. Where a can cause the pitting corrosion. Is a ...
  • Thermal Bonds of Buildings Structures in Energy Conservation–A Case Study 

    Košútová, Katarína; Šikula, Ondřej; Plášek, Josef (Elsevier, 2012-10-04)
    From energy point of view, very actual topic in Czech Republic is redevelopment of concrete constructions in buildings. The article describes theoretical and experimental evaluation of chosen thermal joints of particular ...
  • Numerical Simulation of the Effect of Heat Gains in the Heating Season 

    Šikula, Ondřej; Plášek, Josef; Hirš, Jiří (Elsevier, 2012-03-08)
    This paper is concerned with the description and verification of an energy model of a building using the BSim software. The aim is to determine the effect of the basic heat gains on the energy consumption of a building. ...
  • Assessment of condensation of water vapor in the mixing chamber by CFD method 

    Vojkůvková, Petra; Šikula, Ondřej; Weyr, Jan (EDP Sciences, 2015-05-06)
    The analyzed topic belongs to the field of design and operation of HVAC systems, focusing mainly on mixing chambers. The paper deals with problems of condensation and freezing of water vapour on walls of mixing chambers ...
  • Development of organic and biodegradable insulating material for ETICS 

    Tůmová, Eva; prof. Ing. Rostislav Drochytka, CSc., MBA; Černý, Vít; Čada, Pavel (Elsevier, 2017-07-24)
    When developing new insulating materials, there is, in recent years, a pressure to replace the widely used polystyrene insulation for material, which is more sustainable and more eco-friendly. The shelf life of ETICS ...
  • Verification of the Possibility of Solidification Product Made of Neutralization Sludge use in the Building Industry 

    Dohnálková, Božena; prof. Ing. Rostislav Drochytka, CSc., MBA; Černý, Vít (Elsevier, 2013-05-16)
    This paper deals with hazardous waste solidification /stabilisation, specifically neutralization sludge that comes from active industrial sources and neutralization sludge that comes from old ecological sources. As ...
  • Technology of Remediation of Embankment Dams by Optimal Grout 

    Kociánová, Magdaléna; prof. Ing. Rostislav Drochytka, CSc., MBA; Černý, Vít (Elsevier, 2016-05-31)
    Floods represent one of the greatest direct dangers of natural disasters in Europe. During floods, substantial material damage and often even losses of human life may occur. In the Czech Republic both of these were recorded ...
  • Effect of firing temperature on the structure of the aggregate from sintered ashes 

    Černý, Vít; Tůmová, Eva (Elsevier, 2016-08-03)
    Production of artificial aggregate from ashes is worldwide known technology that uses up to 100% of ash in the mixture. There are known two types of aggregate. First is based on binders and known as cold-bonded. Second ...
  • Fracture Mechanical Properties of Cement Based Composites with Various Amount of Waste Aggregates 

    Seitl, Stanislav; Viszlay, Viliam; Domski, Jacek; Katzer, Jacek (Elsevier, 2017-01-05)
    The importance of sustainability and recycling has become increasingly recognized and understood in academia and industry over the last several decades. Recycling of construction and debris waste is one of many avenues ...
  • Cement based composites for thin building elements: Fracture and fatigue parameters 

    Seitl, Stanislav; Bílek, Vlastimil; Keršner, Zbyněk; Veselý, Jiří (Elsevier, 2010-06-06)
    For application in civil engineering structures and also for strengthening existing structures cement-based composites are one of the most frequently used materials. Although many studies have been conducted on the mechanical ...
  • New Formula for Geometric Stiffness Matrix Calculation 

    Němec, Ivan; Trcala, Miroslav; Ševčík, Ivan; Štekbauer, Hynek (Scientific Research Publishing, 2016-04-27)
    The standard formula for geometric stiffness matrix calculation, which is convenient for most engineering applications, is seen to be unsatisfactory for large strains because of poor accuracy, low convergence rate, and ...
  • A New Cable-Pulley Algorithm in RFEM 

    Štekbauer, Hynek; Němec, Ivan (De Gruyter, 2016-12-15)
    The cable-pulley system is widely used for its advantages. In this paper, application of a new algorithm for the calculation of cables on pulleys is presented. Unlike other algorithms, this algorithm enables to take the ...
  • Experimental Verification of the Structural Glass Beam-Columns Strength 

    Pešek, Ondřej; Melcher, Jindřich; Balázs, Ivan (IOP Publishing, 2017-11-04)
    This paper deals with experimental research of axially and laterally loaded members made of structural (laminated) glass. The purpose of the research is the evaluation of buckling strength and actual behaviour of the ...
  • Dynamics of Collapse of a High Building 

    Němec, Ivan; Juráňová, Martina; Ševčík, Ivan; Frantík, Petr; Vlk, Zbyněk (David Publishing, 2012-06-25)
    This paper is a contribution to the discussion about the fall of the New York World Trade Center (WTC) towers in 2001. The differential equation of the collapse of a high building is derived by taking into account many ...
  • Full-scale testing of Ground Anchors in Neogene Clay 

    Štefaňák, Jan; Miča, Lumír; Chalmovský, Juraj; Leiter, Augustin (Elsevier, 2016-05-26)
    The research campaign aimed on the better understanding of behavior of prestressed soil anchors in neogene clay, including conduction of variety of in-situ (CPT, PMT) and laboratory (Triaxial test, Simple shear test an ...
  • Statistical Estimate of Uniaxial Compressive Strength of Rock Based on Shore Hardness 

    Závacký, Martin; Štefaňák, Jan; Horák, Vladislav; Miča, Lumír (Elsevier, 2017-06-20)
    The paper presents the use of advanced stochastic simulation techniques for estimating the strength behavior of rock materials. The Shore Rebound hardness was measured on fifty rock specimens coming from eleven different ...
  • Experimental Analysis of the Development of Elastic Properties and Strength under Different Ambient Temperature During the Hardening of Concrete 

    Kocáb, Dalibor; Daněk, Petr; Misák, Petr; Topolář, Libor; Pőssl, Petr (Elsevier, 2017-07-20)
    This paper focuses on the experimental assessment of the degree to which continued exposure to low ambient temperatures influences the concrete modulus of elasticity and compressive strength. The elastic modulus is not a ...

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