LUMPED PARAMETER MODEL FOR STEADYSTATE HEAT TRANSFER CALCULATION ININTERCONNECTED ELECTRICAL SYSTEMSAND FLUIDS

摘要

Applying lumped thermal model networks to interconnected electrical systemsand uids, in analogy with the electrical circuit methods, the system tempera-tures can be advantageously calculated in every node of the thermal networkswith a complete system of equations, which considers the geometry, heatingsources, uid properties and material characteristics. In this paper, the lumpedmodel parametrization for steady-state calculation is explained, and compar-isons of the calculated results with the lumped model and with the compu-tational uid dynamic tools are presented. For example, the heat transfer iscalculated here in the case of a) { heating of cooled hollow conductors and b){ heat exchangers of a water heating system.