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Greep analysis of-piece of the steam distributor
Gabriel, Dušan ; Masák, Jan ; Plešek, Jiří
The finite element analysis of the steam distributor of the CHEMOPETROL heating plant T200 was analyzed under creep conditions. Material properties were described by the probabilistic exponential model with damage. The purpose of the analysis was to compare the original version and the proposed design modification applied to one of T-pieces of the distributor when the original contact algorithm was employed to simulate the interaction between the collar and the pipe.
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Aspects of energy storage systems focusing on flywheel technologies
Zapoměl, Jaroslav ; Kozánek, Jan
The energy storage devices are used to reduce variation of the power transmitted in complex technological systems. The individual technologies are based on different physical principles and are applicable in different industrial fields. This paper focuses on aspects of the flywheel storage devices that have a direct impact on their design, technological parametres, and extent of their application.
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Some experimentally determined properties of a profile in case of self-excited oscillations in subsonic flow
Vlček, Václav ; Zolotarev, Igor ; Kozánek, Jan ; Šidlof, Petr ; Štěpán, M.
In the wind tunnel of the Institute of Thermomechanics of the AS CR,v .v. i., experiments were realized with the profile NACA0015 in the presence of the self-excited oscillation. The oscillation of the profile with pitch and plunge degrees of freedom was excited by the subsonic air flow. The plunge support had the same elasticity for all experiments, the pitch support had seven different values of elasticity. Within experiments different types of self-excited vibration (flutter, stall flutter, deep stall flutter) were realized. Range of Mach numbers were M=0.08–0.45, when the chord length is used as the characteristic dimension of the profile. The frequency and amplitude characteristics of the oscillating profile were experimentally determined.\n
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Materiálové a energetické využití suchého stabilizovaného čistírenského kalu - výroba biocharu středně-teplotní pomalou pyrolýzou.
Pohořelý, Michael ; Moško, Jaroslav ; Zach, Boleslav ; Šyc, Michal ; Václavková, Šárka ; Jeremiáš, Michal ; Svoboda, Karel ; Skoblia, S. ; Beňo, Z. ; Brynda, J. ; Trakal, L. ; Straka, Pavel ; Bičáková, Olga ; Innemanová, P.
V článku jsou shrnuty hlavní vlastnosti biocharu (biouhlu) vyrobeného středně-teplotní pomalou pyrolýzou anaerobně stabilizovaného čistírenského kalu.
Plný tet: SKMBT_C22017071208540 -  PDF
Plný text: content.csg - PDF
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