Free convection on the outer surface of vertical longitudinally finned tubes

• Autorzy: Niezgoda-Żelasko B. , Żelasko J.

Warianty tytułu

PL

Konwekcja swobodna na zewnętrznej powierzchni rur ożebrowanych wzdłużnie

• Języki publikacji: EN

Abstrakty

EN

The paper presents methods of determination and the results of experimental studies of heat transfer coefficients on the outer surface of longitudinally finned tubes under free convection conditions.

PL

Artykuł przedstawia metody wyznaczania współczynników przejmowania ciepła w warunkach konwekcji swobodnej na zewnętrznej powierzchni rur ożebrowanych wzdłużnie.

Słowa kluczowe

EN

free convection; vertical finned tubes; heat transfer coefficients; measuring methods

PL

konwekcja swobodna; pionowe rury ożebrowane; współczynnik przejmowania ciepła; metody pomiarowe

• Wydawca: Wydawnictwo Politechniki Krakowskiej im. Tadeusza Kościuszki
• Czasopismo: Czasopismo Techniczne. Mechanika
• Rocznik: 2015
• Tom: Y. 112, iss. 1-M
• Strony: 75--85
• Opis fizyczny: Bibliogr. 14 poz., wz., rys., wykr.

Twórcy

autor

Niezgoda-Żelasko B.

• Faculty of Mechanical Engineering, Cracow University of Technology

autor

Żelasko J.

• Faculty of Mechanical Engineering, Cracow University of Technology

Bibliografia

• [1] Niezgoda-Żelasko B., Zalewski W., Żelasko J., Experimental research of the air-water heat pump with evaporator operating under free convection conditions, Proceedings from the 44th Science and Technology Conference − Refrigerations Days, Poznań 2012, 237-244.
• [2] Taler J., Sobota T., Cebula A., Determining local heat transfer coefficients on the circumference of smooth and longitudinally finned tubes, Archives of Thermodynamics, vol. 26(1), 2005, 35-52.
• [3] Pronobis M., Kalisz S., Wejkowski R., Model investigations of convective heat transfer and pressure loss in diagonal membrane heating surfaces, Heat and Mass Transfer vol. 38, 2002, 343-350.
• [4] Sparrow E.M., Kang S.S., Longitudinally-finned cross-flow tube banks and their heat transfer and pressure drop characteristics, International Journal Heat Mass Transfer, vol. 28(2), 1985, 339-350.
• [5] Tolpadi A.K., Kuehn T.H., Experimental investigation of conjugate natural convection heat transfer from horizontal isothermal cylinder with a nonisothermal longitudinal plate fin at various angles, International Journal Heat Mass Transfer, vol. 28, 1985, 155-163.
• [6] Rustum I.M., Soliman H.M., Numerical analysis of laminar mixed convection in horizontal internally finned tubes, International Journal Heat Mass Transfer, vol. 33(7), 1990, 1485-1496.
• [7] Chai J.C., Patankar S.V., Natural laminar convection in internally finned horizontal annuli, Numerical Heat Transfer, Part A, vol. 24, 1993, 67-87.
• [8] Haldar S.C., Kochhar G.S., Manohar K., Sahoo R.K., Numerical study of laminar free convection about a horizontal cylinder with longitudinal fins of finite thickness, International Journal of Thermal Sciences, vol. 46, 2007, 692-698.
• [9] Prakash C., Renzoni R., Effect of buoyancy on laminar fully developed flow in a vertical annular passage with radial internal fins, International Journal Heat Mass Transfer, vol. 28, 1985, 995-1003.
• [10] Schmidt K.G., Wärmeübergang an berippten Oberflächen, VDI-Wärmeatlas, Düsseldorf 2002, Mb 9.
• [11] Kołodziejczyk L., Rubik M., Cooling Technology in Air-Conditioning, Arkady, 1976 (in Polish).
• [12] Niezgoda-Żelasko B., Zalewski W., Cooling and air-conditioning heat exchangers: thermal calculations, Wydawnictwo Politechniki Krakowskiej, Kraków 2012 (in Polish).
• [13] ASHRAE, Fundamentals Handbook (SI), Psychrometrics, 1993, 6.1-6.17.
• [14] Cengel Y.A., Ghajar A.J., Heat and Mass Transfer: Fundamentals and Applications, Mc Graw Hill Education, 2011.