Wszystkie pola: dispersive - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Evaluation of resisdence time measurements on heat exchangers for the determination of dispersive Peclet numbers
Autorzy:: Roetzel, W.
Na Ranong, C.
Powiązania:: https://bibliotekanauki.pl/articles/240480.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: heat exchanger
dispersion model
transient tracer experiment
evaluation method
wymiennik ciepła
model dyspersji
metoda oceny
Opis:: 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.
Źródło:: Archives of Thermodynamics; 2014, 35, 2; 103-115
1231-0956
2083-6023
Pojawia się w:: Archives of Thermodynamics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Evaluation of temperature oscillation experiment for the determination of heat transfer coefficient and dispersive Peclet number
Autorzy:: Roetzel, W.
Na Ranong, C.
Powiązania:: https://bibliotekanauki.pl/articles/240047.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: heat exchanger
temperature oscillation experiment
evaluation method
dispersion model
wymiennik ciepła
metoda oceny
dyspersja
model
Opis:: An evaluation method is developed for temperature oscillation experiments in heat exchangers. The unity Mach number dispersion model is applied. For the consideration of lateral wall heat conduction an effective wall thickness is introduced together with a wall heat transfer coefficient. The evaluation method may also be applied to single blow experiments with pulse signals. A sensitivity analysis describes and discusses the accuracy of different evaluation procedures.
Źródło:: Archives of Thermodynamics; 2018, 39, 1; 91-110
1231-0956
2083-6023
Pojawia się w:: Archives of Thermodynamics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Evaluation method of single blow experiment for the determination of heat transfer coefficient and dispersive Peclet number
Autorzy:: Roetzel, W.
Na Ranong, C.
Powiązania:: https://bibliotekanauki.pl/articles/240735.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: heat exchanger
single blow experiment
evaluation method
dispersion model
wymiennik ciepła
eksperyment
metoda oceny
model dyspersji
Opis:: An evaluation method is developed for single blow experiments with liquids on heat exchangers. The method is based on the unity Mach number dispersion model. The evaluation of one experiment yields merely one equation for the two unknowns, the number of transfer units and the dispersive Peclet number. Calculations on an example confirm that one single blow test alone cannot provide reliable values of the unknowns. A second test with a liquid of differing heat capacity is required, or a tracer experiment for the measurement of the Peclet number. A modified method is developed for gases. One experiment yields the effective number of transfer units and approximate values of the two unknowns. The numerical evaluation of calculated experiments demonstrates the applicability of the evaluation methods.
Źródło:: Archives of Thermodynamics; 2015, 36, 4; 3-24
1231-0956
2083-6023
Pojawia się w:: Archives of Thermodynamics
Dostawca treści:: Biblioteka Nauki

Artykuł

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