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  • 1985-1989  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Heat and mass transfer 20 (1986), S. 141-149 
    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 Für das dynamische Verhalten von Gas-Flüs-sigkeits-Wärmeübertragern, die sich als flüssigkeitsseitig gerührte Kreuzstromwärmeübertrager beschreiben lassen, werden theoretische Modelle in Form von Übertragungsfunktionen angegeben. Damit wird es möglich, die Dynamik solcher Geräte aus Konstruktions- und Betriebsdaten zu berechnen. Zunächst wird ausgehend vom statischen Verhalten der Weg der Lösung des partiellen Differentialgleichungssystems skizziert. Anschließend wird am Beispiel eines großen wasserbeheizten Lufterhitzers das dynamische Verhalten durch Frequenzgänge dargestellt. Als Ergebnis der Untersuchungen werden neben den relativ exakten Modellen sehr stark vereinfachte Übertragungsfunktionen angegeben, die für den Zweck der einfachen und schnellen Abschätzung eine genügend genaue Beschreibung des dynamischen Verhaltens von Kreuzstromwärmeübertragern darstellen.
    Notes: Abstract The dynamic behaviour of gas-liquid heat exchangers, which can be described as liquid-side mixed crossflow heat exchangers, is determined by theoretical modeling with transfer functions. Thus it is possible to calculate the dynamics of such exchangers from design and operating data. Starting from the steady-state behaviour the way of evaluating the partial differential equation system is outlined first. Next the dynamic behaviour is described by frequency responses which have been calculated from the data of a large waterheated heat exchanger in an airconditioning system as an example. The results of the research are quite precise models as well as very simple transfer functions, which describe the dynamic behaviour of crossflow heat exchangers sufficiently for the purpose of a simple and quick estimation.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Publication Date: 1986-06-01
    Print ISSN: 0042-9929
    Electronic ISSN: 1432-1181
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Published by Springer
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