Investigation of thermal-flow characteristics of the minichannel heat exchanger of variable louvers height

• Autorzy: Romaniak Artur , Kowalczyk Michał Jan , Łęcki Marcin , Gutkowski Artur , Górecki Grzegorz

Identyfikatory

DOI

10.24425/ather.2023.147540

• Języki publikacji: EN

Abstrakty

EN

The numerical simulation of the heat transfer in the flow channels of the minichannel heat exchanger was carried out. The applied model was validated on the experimental stand of an air heat pump. The influence of louver heights was investigated in the range from 0 mm (plain fin) to 7 mm (maximum height). The set of simulations was prepared in Ansys CFX. The research was carried out in a range of air inlet velocities from 1 to 5 m/s. The values of the Reynolds number achieved in the experimental tests ranged from 93 to 486. The dimensionless factors, the Colburn factor and friction factor, were calculated to evaluate heat transfer and pressure loss, respectively. The effectiveness of each louver height was evaluated using the parameter that relates to the heat transfer and the pressure drop in the airflow. The highest value of effectiveness (1.53) was achieved by the louver height of 7 mm for the Reynolds number of around 290.

Słowa kluczowe

EN

CFD; heat transfer; heat pump; louvered fin; minichannel heat exchanger

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2023
• Tom: Vol. 44, no 3
• Strony: 119--141
• Opis fizyczny: Bibliogr. 22 poz., rys.

Twórcy

autor

Romaniak Artur

• Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland

autor

Kowalczyk Michał Jan

• Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland

autor

Łęcki Marcin

• Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland

autor

Gutkowski Artur

• Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland

autor

Górecki Grzegorz

• Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).