Evaluation of resisdence time measurements on heat exchangers for the determination of dispersive Peclet numbers

• Autorzy: Roetzel W. , Na Ranong C.
• Języki publikacji: EN

Abstrakty

EN

The recently developed special unity Mach number dispersion model prescribes the corrections to heat transfer coefficients which are simple functions of the dispersive Peclet numbers. They can be determined through the residence time measurements. An evaluation method is described in which the measured input and response concentration profiles are numerically Laplace transformed and evaluated in the frequency domain. A characteristic mean Peclet number is defined. The method is also applied to the parabolic dispersion model and the cascade model. A calculated example of a tube bundle with maldistribution and backflow demonstrates the suitability of the evaluation method.

Słowa kluczowe

EN

heat exchanger; dispersion model; transient tracer experiment; evaluation method

PL

wymiennik ciepła; model dyspersji; metoda oceny

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2014
• Tom: Vol. 35, no. 2
• Strony: 103--115
• Opis fizyczny: Bibliogr. 12 poz., il.

Twórcy

autor

Roetzel W.

• Helmut Schmidt University/University of the Federal Armed Forces Hamburg, Institute of Thermodynamics, D-22039 Hamburg, Germany

autor

Na Ranong C.

• Georg Simon Ohm University of Applied Sciences Nuremberg, Faculty of Process Engineering, D-90489 Nuremberg, Germany

Bibliografia

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