Pressure drop related to flow maldistribution in a model minichannel plate heat exchanger

Klugmann, M.; Dąbrowski, P.; Mikielewicz, D.

doi:10.1515/aoter-2018-0015

Artykuł - szczegóły

Tytuł artykułu

Pressure drop related to flow maldistribution in a model minichannel plate heat exchanger

Autorzy

Klugmann M. , Dąbrowski P. , Mikielewicz D.

Treść / Zawartość

Pełne teksty:

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Identyfikatory

DOI

10.1515/aoter-2018-0015

Warianty tytułu

Języki publikacji

Abstrakty

The paper describes issues related to pressure drop that accompanies the phenomenon of maldistribution of working fluid between the channels of a model minichannel plate heat exchanger. The research concerns a single exchanger’s plate containing 51 (in every geometry) parallel rectangular minichannels of hydraulic diameters 461 µm, 571 µm, 750 µm, and 823 µm. In addition, more complex geometry has been investigated, equipped with additional diagonal channels (so called extended geometry). The moment of the liquid phase transition through the heat exchanger was recorded at the flow rates ranging from 0.83 g/s to 13.33 g/s in the inlet manifold. The paper discusses the total pressure drop as a function of the flow rate and the characteristic dimension of minichannels, as well as the pressure drop as a function of the time of the fluid passage through the main part of the measuring section in which measurements were done. The resulting profiles correlate with the images of the flow distribution between channels recorded using the fast shutter speed camera, that allows to draw a further conclusions about the specifics of the maldistribution process. The impact of the total pressure drop on the actual range of optimum operating conditions of the heat exchanger was analyzed.

Słowa kluczowe

pressure drop transient flow minichannel plate heat exchanger flow maldistribution

opory przepływu przepływ nieustalony zły rozkład przepływu

Wydawca

Wydawnictwo Instytutu Maszyn Przepływowych PAN
Komitet Termodynamiki i Spalania PAN

Czasopismo

Archives of Thermodynamics

Rocznik

2018

Tom

Vol. 39, no 2

Strony

123--146

Opis fizyczny

Bibliogr. 31 poz., rys.

Twórcy

autor

Klugmann M.

Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland

autor

Dąbrowski P.

pawel.dabrowski@pg.edu.p

Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland

autor

Mikielewicz D.

Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland

Bibliografia

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Uwagi

The work presented in the paper was funded by the National Science Centre research project No. 2015/19/D/ST8/03201 in years 2016–2019.

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

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-d9b950a0-7768-4681-b531-159edf4d4044