Approximate estimation of the thermal resistance of the terms in the process of heat transfer through the finned wall

Мильман, О. О.; Yan’kov, G. G.; Kondrat’ev, A. V.; Ptakhin, A. V.; Krylov, Vladimir A.; Korlyakova, E. J.; Zhilin, Aleksandr

doi:10.1088/1742-6596/891/1/012137

Cited by 2 publications

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“…Taler and Oclón [8] developed a methodology to estimate the thermal resistance of plate-and-tube heat exchangers using experimental data and CFD simulations with ANSYS software. Milman et al [9] proposed an experimental model to determine the thermal resistance between the tube and the finned wall, accounting for possible errors in this computation, such as surface quality, the possibility of contact corrosion, and welding imperfections.…”

Section: Introductionmentioning

confidence: 99%

A Variational Formulation for Fins with Nonzero Contact Thermal Resistance at the Base

Gama

Sarmento

et al. 2023

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This paper considers the steady-state heat transfer process in a fin with a Robin boundary condition at the base (instead of the usual Dirichlet boundary condition at the base). Robin boundary condition models the effect of the thermal resistance between the base of the fin and the surface on which the fin is placed. This work presents an equivalent minimum principle, represented by a convex and coercive functional, ensuring the solution’s existence and uniqueness. In order to illustrate the use of the proposed functional for reaching approximations, the heat-transfer process in a trapezoidal fin considering a piecewise linear approximation is simulated. The appendix presents a case in which the exact solution in a closed form has been achieved.

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Section: Introductionmentioning

confidence: 99%