The conditions of minimum entropy production in a two-flow heat exchanger, in which one of the contacting flows has a definite temperature, were determined. The simplification of a heat-exchange system with flows whose heat capacity depends on their temperature was considered for the particular case where one of these flows changes its phase state. The thermodynamic equivalence of two-flow and multiflow heat transfer processes was investigated. An algorithm is proposed for the synthesis of a heat-exchange system, integrated in a technological process, in which the temperature and heat capacity of all the flows or some of them are fixed and which has a minimum surface of contact interaction of the flows in it. It is shown that this algorithm holds for a heat transfer process of any kinetics.
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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 94, No. 4, pp. 839–854, July–August, 2021.
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Tsirlin, A.M., Balunov, A.I. & Gagarina, L.G. Synthesis of Heat-Exchange Systems with Flows of Variable Heat Capacity Integrated in a Technological Process. J Eng Phys Thermophy 94, 813–828 (2021). https://doi.org/10.1007/s10891-021-02358-x
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DOI: https://doi.org/10.1007/s10891-021-02358-x