From Chemistry Towards Technology Step-By-Step From Chemistry Towards Technology Step-By-Step От химии к технологии шаг за шагом 2782-1900 119504 10.52957/2782-1900-2026-7-1-147-156 Научные статьи Scientific articles Научные статьи Experimental determination of the efficiency of recuperative heat exchangers Experimental determination of the efficiency of recuperative heat exchangers Леонтьев Валерий Константинович Leontiev Valery Konstantinovich leontievvk@ystu.ru

кандидат технических наук;

candidate of technical sciences;

 Кораблева Ольга Николаевна Korableva Olga Nikolaevna korablevaon@yandex.ru

кандидат химических наук;

candidate of chemical sciences;

 Ярославский государственный технический университет Yaroslavl State Technical University 02 04 2026 02 04 2026 7 1 147 156 17 12 2025 13 03 2026 https://chemintech.ru/en/nauka/article/119504/view

The paper discusses the efficiency of recuperative heat exchangers. Thermodynamic efficiency has been selected as the measure of efficiency for recuperative heat exchangers. The authors present diagrams of experimental setups designed to investigate energy utilisation efficiency for various heat transfer agents flow patterns in ‘tube-in-tube’ and shell-and-tube heat exchangers. A methodology and procedure for determining the thermodynamic efficiency of heat exchangers are presented. The authors found that, in a counter-flow configuration, the thermodynamic efficiency is 5–10% higher than in a direct-flow one. At the specified heat transfer fluid flow rates, the thermodynamic efficiency of a tube-in-tube heat exchanger is 25–30% higher than that of a shell-and-tube. The experimental data obtained will subsequently enable the appropriate selection of heat exchanger type and the rational design of heat transfer agent flow patterns. It depens on the specific operating conditions of the heat exchanger, thereby significantly improving process efficiency.

The paper discusses the efficiency of recuperative heat exchangers. Thermodynamic efficiency has been selected as the measure of efficiency for recuperative heat exchangers. The authors present diagrams of experimental setups designed to investigate energy utilisation efficiency for various heat transfer agents flow patterns in ‘tube-in-tube’ and shell-and-tube heat exchangers. A methodology and procedure for determining the thermodynamic efficiency of heat exchangers are presented. The authors found that, in a counter-flow configuration, the thermodynamic efficiency is 5–10% higher than in a direct-flow one. At the specified heat transfer fluid flow rates, the thermodynamic efficiency of a tube-in-tube heat exchanger is 25–30% higher than that of a shell-and-tube. The experimental data obtained will subsequently enable the appropriate selection of heat exchanger type and the rational design of heat transfer agent flow patterns. It depens on the specific operating conditions of the heat exchanger, thereby significantly improving process efficiency.

 heat exchangers thermodynamic efficiency heat transfer direct flow counter-flow heat balance

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