Search Results - "Hanzelka, Pavel"

Strong near-field enhancement of radiative heat transfer between metallic surfaces by Kralik, Tomas, Hanzelka, Pavel, Zobac, Martin, Musilova, Vera, Fort, Tomas, Horak, Michal

“…Near-field heat transfer across a gap between plane-parallel tungsten layers in vacuo was studied experimentally with the temperature of the cold sample near 5…”
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Heat transfer in cryogenic helium gas by turbulent Rayleigh-Bénard convection in a cylindrical cell of aspect ratio 1 by Urban, Pavel, Hanzelka, Pavel, Musilová, V ra, Králík, Tomáš, Mantia, Marco La, Srnka, Aleš, Skrbek, Ladislav

“…We present experimental results on the heat transfer efficiency of cryogenic turbulent Rayleigh-Bénard convection (RBC) in a cylindrical cell 0.3 m in both…”
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Anomalous heat transport and condensation in convection of cryogenic helium by Urban, Pavel, Schmoranzer, David, Hanzelka, Pavel, Sreenivasan, Katepalli R., Skrbek, Ladislav

“…When a hot body A is thermally connected to a cold body B, the textbook knowledge is that heat flows from A to B. Here, we describe the opposite case in which…”
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Temperature profiles measurements in turbulent Rayleigh-Bénard convection by optical fibre system at the Barrel of II-menau by Drahotský, Jakub, Hanzelka, Pavel, Musilová, Věra, Macek, Michal, du Puits, Ronald, Urban, Pavel

“…Modelling of large-scale natural (thermally-generated) turbulent flows (such as the turbulent convection in Earth’s atmosphere, oceans, or Sun) is approached…”
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Near field radiative heat transfer between macro-scale metallic surfaces at cryogenic temperatures by Králík, Tomáš, Hanzelka, Pavel, Musilová, Věra, Srnka, Aleš, Urban, Pavel

“…•Introduction of thermal near field effect to cryogenic engineering.•Analysis of near field radiative heat transfer based on experimental data.•Interpretation…”
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Low conductive thermal insulation pad with high mechanical stiffness by Hanzelka, Pavel, Dupák, Libor, Krutil, Vojtěch, Krzyžánek, Vladislav, Skoupý, Radim, Srnka, Aleš, Vlček, Ivan, Urban, Pavel

“…We present a low conductive thermal insulation pad named InBallPad (IBP), which we designed for placing of a sample holder of an ultra-high vacuum scanning…”
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A database of metallic materials emissivities and absorptivities for cryogenics by Frolec, Jiří, Králík, Tomáš, Musilová, Věra, Hanzelka, Pavel, Srnka, Aleš, Jelínek, Josef

“…•Database of 58 thermal emissivities and absorptivities measured from 20 K up to 320 K is presented.•Data were systematically collected in our laboratory by a…”
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A removable temperature sensors holder for cryogenic Rayleigh-B\'enard convection cell by Hanzelka, Pavel, Vlcek, Ivan, Urban, Pavel

“…The 16th Cryogenics 2021, IIR Conference / ONLINE / October 5-7, 2021 A removable holder carrying a set of miniature temperature sensors inside our…”
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Current leads in vacuum space of cryogenic systems by Hanzelka, Pavel

“…Electric current leads placed in the vacuum space are often used in cryogenic systems. A complex analysis of the thermal processes in the leads is a difficult…”
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Device for measurement of thermal emissivity at cryogenic temperatures by Kralik, Tomas, Hanzelka, Pavel, Musilova, Vera, Srnka, Ales

“…In the described device, the thermal emissivity or absorptivity of the sample is measured by substitution of the radiative heat flow between two parallel…”
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Factors influencing thermal radiative properties of metals by Kralik, Tomas, Hanzelka, Pavel, Musilova, Vera, Srnka, Ales

“…Data on thermal absorptivity and emissivity are important for calculations of heat flows in cryogenic devices. Although thermal radiative properties of…”
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Economical helium bath cryopump: design and testing by Musilová, Věra, Dupák, Jan, Hanzelka, Pavel, Králı́k, Tomáš, Urban, Pavel

“…A small UHV helium bath cryopump with low cryoliquid consumption has been designed, manufactured and tested. The cryopump is designed to keep UHV in electron…”
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Design and testing of low temperature part of an UHV SPM microscope by Frolec, Jiri, Vonka, Jakub, Hanzelka, Pavel, Kralik, Tomas, Musilova, Vera, Urban, Pavel

“…We have developed low temperature part of an ultra high vacuum scanning probe microscope (UHV-SPM) working at variable temperature within the range from 20 K…”
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Problems of measurement of the helium boil off rate of tomographic magnets by Hanzelka, Pavel, Horký, Jaroslav

“…The problems connected with the evaluation of the helium boil off of a superconducting MRI magnet are discussed. The influence of changes in atmospheric…”
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Small helium bath cryopump for electron optical devices by Hanzelka, Pavel, Dupák, Jan, Musilová, Věra

“…A small helium bath cryopump for electron optical devices has been designed and manufactured. The filling volumes of LHe and LN2 are 2.5 and 3.6 l,…”
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150-day survival of a calf with a polymethylmethacrylate total artificial heart: TNS-BRNO-II by Vasků, J, Cerný, J, Hanzelka, P, Urbánek, E, Dostál, M, Urbánek, P, Guba, P, Pavlícek, V, Krcek, L, Sládek, T, Hartmannová, B, Filkuka, J, Janecková, H, Sotolová, O, Sotáková, E, Dolezel, S, Krcma, V, Cídl, K, Bednarík, B

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