Abstract
The paper deals with issues related to determining the value of the thermal resistance of the fin-wall contact in heat exchangers. The description of the process of heat transfer between heat carriers and the main factors and the key parameters which determine the thermal resistance between the rib and the wall is presented. The experimental stand for thermal-hydraulic studies of the tube bundle model was developed. A technique for estimating the thermal resistance of a rib-wall contact on the basis of experimental studies is proposed. An estimation of possible sources of errors that should be taken into account when performing calculations is carried out.
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