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

被引:0
|
作者
Pulin, Anton [1 ]
Laptev, Mikhail [1 ]
Kortikov, Nikolay [2 ]
Barskov, Viktor [1 ]
Roschenko, Gleb [1 ]
Alisov, Kirill [1 ]
Talabira, Ivan [1 ]
Gong, Bowen [1 ]
Rassokhin, Viktor [3 ]
Popovich, Anatoly [4 ]
Novikov, Pavel [4 ]
机构
[1] Peter Great St Petersburg Polytech Univ, Higher Sch Nucl & Heat Power Engn, Polytech Skaya Str 29, St Petersburg 195251, Russia
[2] Peter Great St Petersburg Polytech Univ, Inst Power Engn, Higher Sch Nucl & Thermal Energy, 29 Politechnicheskaya Str, St. Petersburg 195251, Russia
[3] Peter Great St Petersburg Polytech Univ, Lab Modeling Technol Proc & Design Power Equipment, St Petersburg 195251, Russia
[4] Peter Great St Petersburg Polytech Univ, Inst Mech Engn Mat & Transport, Lab ?Synthesis New Mat & Structures, 29 Politechnicheskaya Str, St Petersburg 195251, Russia
基金
俄罗斯科学基金会;
关键词
additive technologies; energy; heat exchange; heat regeneration; intensification of heat transfer; lattice structures; turbulators;
D O I
10.3390/en17133333
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
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.
引用
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页数:18
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