Patent ID: 7788073
Filing Date: 2010-08-31
Classification: F28D,F28F

Abstract:
1. Process for determining the strength of a plate-type heat exchanger, comprising: computing temperature stresses of a plate-type heat exchanger within the heat exchanger during its operation by a three-dimensional numerical simulation, said plate-type heat exchanger comprising layers, each layer comprising separating plates and a profile located between the separating plates, said profile comprising a profile part extending between the separating plates and adjoining the separating plates; and determining the strength of the plate-type heat exchanger based on the computed temperature stresses, wherein in the three-dimensional numerical simulation, a spatial temperature distribution in the profile and in the separating plates is determined by using a layer model comprising: modeling the profile part as a metal block that fills the space between the separating plates and comprises two planes, each plane in thermally conductive contact with a separating plate, and at least one plane having two surfaces between and parallel to the separating plates; determining a total heat introduced via a fluid into the profile part and into the separating plate with a first heat introduction comprising heat transfer from the fluid into the profile part and subsequent heat conduction through the profile part and from the profile part into the separating plate; and introducing an amount of heat corresponding to the first heat introduction into a first surface within the metal block.