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  • 1985-1989  (2)
  • 1955-1959
  • 1987  (2)
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  • 1985-1989  (2)
  • 1955-1959
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  • 1
    Electronic Resource
    Electronic Resource
    Experimentelle Untersuchung des Einflusses der Nebelbildung auf den Wärme- und Stofftransport an einer senkrechten gekühlten Platte bei freier Konvektion (1987)
    Springer
    Heat and mass transfer 21 (1987), S. 181-187 
    Details
    ISSN: 1432-1181
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Zusammenfassung Experimentell untersucht wurde der Einfluß der Bildung von Nebel innerhalb der Grenzschicht auf den Wärme- und Stofftransport an einer senkrechten gekühlten Platte in feuchter Luft bei freier Konvektion. Gemessen wurde das Temperaturfeld, Wärme- und Stoffübergangsraten sowie die Dicke und Struktur der Nebelschicht. Die Bildung von Nebel steigert den Wärmetransport an die Wand und behindert den Stofftransport erheblich.
    Notes: Abstract The influence of fog formation within the boundary layer on free convective heat and mass transfer at a vertical cooled plate in humid air was studied experimentally. Temperature field, heat and mass transfer rates as well as thickness and structure of the fog layer were measured. Caused by fog formation, heat transfer at the wall is increased and mass transfer is decreased considerably.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01377575
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Thermal diffusivity of fluids in a broad region around the critical point (1987)
    Springer
    International journal of thermophysics 8 (1987), S. 165-180 
    Details
    ISSN: 1572-9567
    Keywords: dynamic light scattering ; ethane ; gas-liquid critical point ; nitrous oxide ; sulfur hexafluoride ; thermal diffusivity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Dynamic light scattering is a suitable method for the investigation of transport properties such as the thermal diffusivity of optically transparent fluids. The main advantages of the method are its quickness, the fact of the thermodynamic state of equilibrium of the sample (gradients are not required), and the relatively simple evaluation of data without the necessity of calibration. However, an insufficient production of intensity of scattered light may be a limiting effect. For that reason the vicinity of the gas-liquid critical point represents the classical range of application. In this paper, it is shown that by means of an appropriate choice of experimental apparatus, measurements are also feasible in an extended range of states. Broad regions around critical points of three pure fluids (sulfur hexafluoride, SF6; ethane, C2H6; nitrous oxide, N2O) over temperature ranges ¦T-T c¦ of 0.02 to 50 K and density ranges (ρ/ρc) of 0.2 to 2 were investigated. In this region the thermal diffusivity shows great variations with temperature and density and cannot be described by means of ideal-gas behavior or relations for liquids. The measurements were carried out along the coexistence curve for both phases, along the critical isochore and along some isotherms with T≶T c. The measured or calculated density, pressure, and thermal diffusivity data as well as some correlations are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00515200
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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