Numerical study of flow maldistribution in plate heat exchangers used for evaporation process

• Autorzy: Pluszka Paweł , Brenk Arkadiusz Patryk , Malecha Ziemowit Miłosz

Identyfikatory

DOI

10.24425/ather.2019.129994

• Języki publikacji: EN

Abstrakty

EN

Geometry of plate heat exchangers (PHE) is characterized by a complex net of narrow channels. It enhances turbulence and results in better heat transfer performance. Theoretically, larger number of channels (plates) should proportionally increase the PHE heat power capacity. In practice a nonuniform massflow distribution in consecutive flow channels can significantly deteriorate the overall heat exchange performance. The flow maldistribution is one of the most commonly reported exploitation problems and is present in PHE with and without phase-change flows. The presented paper investigates numerically a flow pattern in PHE with evaporation of R410A refrigerant. Various sizes of PHE are considered. The paper introduces a robust methodology to transform the complicated geometry of a real 3D PHE to its 2D representation. It results in orders of magnitude faster calculations and allows for fast evaluation of different geometrical changes of PHE and their effect on flow maldistribution.

Słowa kluczowe

EN

plate heat exchanger; flow maldistribution; evaporation; openFOAM

PL

płytowy wymiennik ciepła; zły rozkład przepływu; openFOAM

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2019
• Tom: Vol. 40, no 3
• Strony: 57--82
• Opis fizyczny: Bibliogr. 33 poz., rys., tab.

Twórcy

autor

Pluszka Paweł

• Wrocław University of Science and Technology, Department of Cryogenic, Aeronautic and Process Engineering, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland

autor

Brenk Arkadiusz Patryk

• Wrocław University of Science and Technology, Department of Cryogenic, Aeronautic and Process Engineering, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland

autor

Malecha Ziemowit Miłosz

• Wrocław University of Science and Technology, Department of Cryogenic, Aeronautic and Process Engineering, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).