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Now showing items 31-40 of 910
Analiza oštećenja i naponskog stanja poluga mlinova za ugalj termoelektrane na fosilna goriva / Damage and stress state analysis of fossil fuel power plant coal mill crank
(Visoka tehnička škola strukovnih studija, Beograd, 2006)
U radu je dat prikaz oštećenja koja se javljaju kod poluga mlinova za ugalj termoenergetskih postrojenja u uslovima eksploatacije. Nastala oštećenja mogu da budu takvog karaktera da poluge mlinova za ugalj izgube svoju ...
An experimental verification of numerical models for the fracture and fatigue of welded structures
(Institute of Metals and Technology, 2007)
By allowing a more detailed analysis, numerical modelling has an important role to play in the development of structures. However, the results of a numerical model's analysis have to be verified with an experimental analysis ...
Radiation Absorption Characteristics of Titanium Alloys
(Polish Acad Sciences Inst Physics, Warsaw, 2009)
Titanium alloys have found numerous applications in space research, and nuclear industry and research. Since X-rays constitute an important part of the space radiation environment, numerical simulations of radiation ...
Termohidraulika isparivača ložišta parnog kotla sa prinudnom cirkulacijom / Thermal-hydraulics of evaporating tubes in the forced circulation loop of a steam boiler
(Univerzitet u Beogradu - Mašinski fakultet, Beograd, 2008)
Elektroprivreda Srbije je u toku 2005. godine nastavila radove na izgradnji TE Kolubara B snage 350 MW, koji su započeti još davne 1989. godine. Sam kotao je toranjske konstrukcije, a za isparivač kotla predviđeno je ...
Reparation of the damaged forging hammer mallet by hard facing and weld cladding
(Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek, 2009)
In this paper the problems related to the maintenance of large forging mallets of pneumatic hammers including hard facing of cracked or worn working surfaces are considered. Actually, the choice of optimum technology for ...
Sanacija i rekonstrukcija autoklava / Overhaul and reconstruction of an autoclave
(Institut za ispitivanje materijala, Beograd, 2008)
Izveden je projekt sanacije i rekonstrukcije autoklava, bitnog dela opreme za sušenje uglja, po zahtevu kompanije Kolubara Prerada-Vreoci. Autoklavi rade pod pritiskom na povišenoj temperaturi. U toku eksploatacije na njima ...
Uticaj sopstvenih učestanosti na inicijaciju prslina kućišta zupčaste pumpe / Influence of eigen frequencies on crack initiation in gear pump housing
(Institut za ispitivanje materijala, Beograd, 2009)
Razmotreni su osnovni teorijski aspekti dinamičke analize konstrukcija i analiziran poseban primer kućišta jedne zupčaste pumpe visokog pritiska. Model konstrukcije je baziran na 3D elementima. Korišćen je programski paket ...
Energy efficiency of residential buildings in Serbia
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2010)
In this paper, presented is the stale-of-the-art of energy Efficiency of residential buildings in Serbia. Special attention is paid to energy efficiency in already existing buildings. The average energy consumption in ...
Reconstruction of the aero-mixture channels of the pulverized coal plant of the 100 MW power plant unit
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2011)
After the last revitalization of thermal power block of 100 MW in TPP 'Kostolac A', made in the year 2004, during the operation of the plant, pulverized coal deposition often occurred in horizontal sections of the aero-mixture ...
The effect of bowl-in-piston geometry layout on fluid flow pattern
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2011)
In this paper some results concerning the evolution of 3-D fluid flow pattern through all four strokes in combustion chambers with entirely different bowl-in-piston geometry layouts ranging from 'omega' to 'simple cylinder' ...