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传热学

DOI: 10.1615/HeatTransRes.v37.i2.10
pages 93-102

Influence of Nonisothermicity on the Heat Transfer from a Bank of Finned Tubes in the Presence of Coating on the Outside Surface

V. G. Gorobets
Institute of Engineering Thermophysics, National Academy of Sciences of Ukraine, Kiev, Ukraine

ABSTRACT

The results of solution of the conjugated heat transfer problem for a staggered bank of finned tubes in the presence of a weakly conducting coating on the outside surface are given. The characteristics have been determined and the basic laws governing heat transfer and the influence of coatings on the conditions of conjugated heat transfer have been studied. The results of solution of conjugated problems were compared with the data of calculations obtained with the aid of simplified models that ignore the influence of the surface nonisothermicity or employ averaged values of the heat transfer coefficients. The differences between the local and integral characteristics of heat transfer of the objects under study found in conjugated and simplified statements of the problem are found.


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