Numerical Investigation of Heat Transfer Intensification Using Lattice Structures in Heat Exchangers

Anton Pulin (), Mikhail Laptev (), Nikolay Kortikov, Viktor Barskov, Gleb Roschenko, Kirill Alisov, Ivan Talabira, Bowen Gong, Viktor Rassokhin, Anatoly Popovich and Pavel Novikov
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Anton Pulin: Higher School of Power Engineering, Institute of Power Engineering, Peter the Great St. Petersburg Polytechnic University, 29 Politechnicheskaya Str., St. Petersburg 195251, Russia
Mikhail Laptev: Higher School of Power Engineering, Institute of Power Engineering, Peter the Great St. Petersburg Polytechnic University, 29 Politechnicheskaya Str., St. Petersburg 195251, Russia
Nikolay Kortikov: Higher School of Nuclear and Thermal Energy, Institute of Power Engineering, Peter the Great St. Petersburg Polytechnic University, 29 Politechnicheskaya Str., St. Petersburg 195251, Russia
Viktor Barskov: Higher School of Power Engineering, Institute of Power Engineering, Peter the Great St. Petersburg Polytechnic University, 29 Politechnicheskaya Str., St. Petersburg 195251, Russia
Gleb Roschenko: Higher School of Power Engineering, Institute of Power Engineering, Peter the Great St. Petersburg Polytechnic University, 29 Politechnicheskaya Str., St. Petersburg 195251, Russia
Kirill Alisov: Higher School of Power Engineering, Institute of Power Engineering, Peter the Great St. Petersburg Polytechnic University, 29 Politechnicheskaya Str., St. Petersburg 195251, Russia
Ivan Talabira: Higher School of Power Engineering, Institute of Power Engineering, Peter the Great St. Petersburg Polytechnic University, 29 Politechnicheskaya Str., St. Petersburg 195251, Russia
Bowen Gong: Higher School of Power Engineering, Institute of Power Engineering, Peter the Great St. Petersburg Polytechnic University, 29 Politechnicheskaya Str., St. Petersburg 195251, Russia
Viktor Rassokhin: Laboratory “Modeling of Technological Processes and Design of Power Equipment”, Great St. Petersburg Polytechnic University, 29 Politechnicheskaya Str., St. Petersburg 195251, Russia
Anatoly Popovich: Laboratory “Synthesis of New Materials and Structures”, Institute of Mechanical Engineering, Materials and Transport, Peter the Great St. Petersburg Polytechnic University, 29 Politechnicheskaya Str., St. Petersburg 195251, Russia
Pavel Novikov: Laboratory “Synthesis of New Materials and Structures”, Institute of Mechanical Engineering, Materials and Transport, Peter the Great St. Petersburg Polytechnic University, 29 Politechnicheskaya Str., St. Petersburg 195251, Russia

Energies, 2024, vol. 17, issue 13, 1-18

Abstract: Heat exchangers make it possible to utilize energy efficiently, reducing the cost of energy production or consumption. For example, they can be used to improve the efficiency of gas turbines. Improving the efficiency of a heat exchanger directly affects the efficiency of the device for which it is used. One of the most effective ways to intensify heat exchange in a heat exchanger without a significant increase in mass-dimensional characteristics and changes in the input parameters of the flows is the introduction of turbulators into the heat exchangers. This article investigates the increase in efficiency of heat exchanger apparatuses by introducing turbulent lattice structures manufactured with the use of additive technologies into their design. The study is carried out by numerical modeling of the heat transfer process for two sections of the heat exchanger: with and without the lattice structure inside. It was found that lattice structures intensify the heat exchange by creating vortex flow structures, as well as by increasing the heat exchange area. Thus, the ratio of convection in thermal conductivity increases to 3.03 times. Also in the article, a comparative analysis of the results obtained with the results of heat transfer intensification using classical flow turbulators is carried out. According to the results of the analysis, it was determined that the investigated turbulators are more effective than classical ones, however, the pressure losses in the investigated turbulators are much higher.

Keywords: additive technologies; energy; heat exchange; heat regeneration; intensification of heat transfer; lattice structures; turbulators; energy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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