Determining local heat transfer coefficient on the circumference of smooth and longitudinally finned tubes

• Autorzy: Taler J. , Sobota T. , Cebula A.
• Języki publikacji: EN

Abstrakty

EN

The distribution of the heat transfer coefficient is calculated from temperature. The unknown parameters associated with the solution are selected to achieve the closet agreement in the least squares sense between the computed and measured temperatures using the Levenberg-Marquardt method. The nonlinear least .squares problem is parametrized by assuming the staircase changes of heat transfer coefficient on the boundary or expressing the space variations of the heat transfer coefficient in the functional term. Determination of the circumferential heat transfer coefficient distribution on the heated tube with two longitudinal fins in cross flow demonstrates the accuracy of the developed method. The actual experimental data were used. Experiments were performed with an array of vertical tubes arranged in staggered pattern.

Słowa kluczowe

EN

finned tube; heat transfer coefficient

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2005
• Tom: Vol. 26, no. 1
• Strony: 35--52
• Opis fizyczny: Bibliogr. 23 poz., wz., rys, wykr.

Twórcy

autor

Taler J.

• Cracow University of Technology, Division of Power Engineering, Jana Pawła II 37, 31-864 Cracow, Poland

autor

Sobota T.

• Cracow University of Technology, Division of Power Engineering, Jana Pawła II 37, 31-864 Cracow, Poland

autor

Cebula A.

• Cracow University of Technology, Division of Power Engineering, Jana Pawła II 37, 31-864 Cracow, Poland

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