Analysis of the Efficiency of Using Heat Exchangers with Porous Inserts in Heat and Gas Supply Systems

Natalia Rydalina, Elena Antonova, Irina Akhmetova, Svetlana Ilyashenko, Olga Afanaseva, Vincenzo Bianco and Alexander Fedyukhin
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Natalia Rydalina: Department of Industrial Heat Power Engineering, Industrial University of Tyumen, 625000 Tyumen, Russia
Elena Antonova: Department of Industrial Heat Power Engineering, Industrial University of Tyumen, 625000 Tyumen, Russia
Irina Akhmetova: Department of Economics and Organization of Production, Kazan State Power Engineering University, Kazan, 420066 Tatarstan, Russia
Svetlana Ilyashenko: Department of Trade Policy, Plekhanov Russian University of Economics, 117997 Moscow, Russia
Olga Afanaseva: Higher School of Nuclear and Heat Power Engineering, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia
Vincenzo Bianco: DIME/TEC, University of Genoa, 16145 Genoa, Italy
Alexander Fedyukhin: Energy Eficiency and Hydrogen Technology Department, Power Engineering Institute, National Research University Moscow, 111250 Moscow, Russia

Energies, 2020, vol. 13, issue 22, 1-13

Abstract: The creation of efficient and compact heat exchangers is one of the priority tasks arising during the design of heat and gas supply to industrial and residential buildings. As a rule, finned surfaces and turbulization of heat carrier flows are used to increase the efficiency of heat exchange in heat exchangers. The present paper proposes to use novel materials, namely porous material, in the design of highly efficient heat exchangers. The investigation was carried out experimentally and theoretically. To study the possibility of creating such heat exchangers, a multi-purpose test bench is created. The aim of the study was to assess the intensity of heat transfer in heat exchangers using porous metal. Laboratory tests are carried out as part of the experimental study. In the theoretical study, the classical equation for the change in the heat flux density when the coolant passes through the porous insert was used. As a result, a mathematical model was obtained in the form of a second-order differential equation. Boundary conditions were set and a particular solution was obtained. The results of theoretical calculations were compared with experimental data. The performed study experimentally confirmed the efficiency of using porous metal inserts in the design of shell-and-tube heat exchangers. The compiled mathematical model allows one to perform engineering calculations of the considered heat exchangers with porous inserts.

Keywords: heat exchangers; porous metals; multi-purpose test bench; freon; differential equation; cooling intensity (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: 2020
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