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  • Industrial Chemistry  (4)
  • Fluid Mechanics and Thermodynamics
  • 1955-1959  (5)
  • 1959  (5)
  • 1
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Behandelt werden in der Praxis bewährte Vorrichtungen für das maschinelle Schweißen harter Thermoplaste, insbesondere von Polyvinylchlorid und Polyätyhlen.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 31 (1959), S. 402-405 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es wurden Alkalisalz-Lösungen einem Temperaturgefälle ausgesetzt. In der ungleichmäßig temprierten Flüssigkeit entstehen Dichteunterschiede, die zu einer Strömung führen, welche auf Grund ihrer geringen Geschwindigkeit laminar ist. Experimentell wurde dieser Wärmeübergang bei freier Konvektion durch Ausmessen des den Körper umgebenden Mediums durch eine elektrische und eine optische Methode festgehalten. Genaue Kenntnisse der Strömungs- und Konzentrationsverhältnisse lassen Auswertungen hinsichtlich der Auskristallisation der einzelnen Komponenten zu.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es werden zwei Apparaturen zur Messung der Aufstiegsgeschwindigkeit und des Stoffübergangs von Gasblasen in Flüssigkeiten beschrieben. Untersucht wurden die Systeme Kohlendioxyd/Wasser und Kohlendioxyd/Dekalin. Die Aufstiegsgeschwindigkeit der Blasen in der Flüssigkeit erwies sich als unabhängig von der Reaktion; der Stoffübergang zwischen Blase und Flüssigkeit war mehrfach größer, als bei Kugeln gleichen Volumens zu erwarten ist.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 31 (1959), S. 711-724 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Immer häflger benutzt der Chemiker in analytischen und Forschungs-Laboratorien registrierende IR-Spektrometer, die von mehreren Firmen hergestellt werden. Ihr Aufbau und ihre Arbeitsweise werden beschrieben; Auflösung, photometrische Genauigkeit und Registriergeschwindigkeit werden mit der Leistungsfähigkeit des Monochromators in Verbindung gebracht. Ein vollständiges Funktionsschema und ein Überblick über die verschiedenen Fabrikate erläutern die Praxis des Gerätebaus.
    Additional Material: 29 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Publication Date: 2018-06-02
    Description: The increasing complexity of heat transfer and process situations which involve fluid flow has demanded the frequent use of flow passages of unusual geometrical configuration. The present investigation is concerned with one such novel configuration, namely the longitudinal flow between solid cylindrical rods which are arranged in regular array. A schematic diagram of the situation under study. The rods may be located either in triangular or square array. The flow will be taken to be laminar and fully developed. The aim of this analysis is to determine the pressure drop, shear stress, and velocity-distribution characteristics of the system. The starting point of this study is the basic law of momentum conservation. The resulting differential equation has been solved in an approximate, but almost exact, manner by the use of truncated trigonometric series. Results are obtained over a wide range of porosity values for both the triangular and square arrays. Heat transfer has not been considered. The configuration under investigation has potential application in compact heat exchangers for nuclear reactors and other situations. Further the results should also be of interest in the theory of flow through unconsolidated porous beds (ia, 9a). The only related analytical work known to the authors is that of Emersleben (S), who considered only the square array. His rather involved solution, based on complex zeta functions, appears to be valid only at high porosities. Experiments covering a porosity range of 0.093 to 0.984 have been made by Sullivan (4) using parallel-oriented fibers, most of the tests being for fibers in random array. These previous investigations will be compared with the present theory in a later section.
    Keywords: Fluid Mechanics and Thermodynamics
    Type: AIChE Journal; Volume 5; No. 3; 325-330
    Format: application/pdf
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