Heat transfer and pressure drop analysis of automotive HVAC condensers with two phase flows in minichannels

• Autorzy: Skiepko Teodor

Identyfikatory

DOI

10.2478/emj-2021-0039

• Języki publikacji: EN

Abstrakty

EN

The air cooled automotive condensers under study are of brazed aluminium tube and center, consisting of one row array of horizontal parallel multi-port flat tubes with louver fins on air side. Each tube is with a number of smooth parallel minichannels for internal flow of refrigerant. The analysis uses decomposition of the condenser along refrigerant flow path into specific different zones as follows: two single phase zones, namely: superheated and subcooled, and a few zones of two phase flow that can appear along some specific condensation paths to be: annular/intermittent/bubble or annular/annular-wavy/intermittent/bubble or annular/wavy/stratified. The approach presented is based on experimental correlations for heat transfer and pressure drop. The heat transfer prediction is performed using ε – NTUo methodology. The results of the analysis refer to overall heat transfer rate, heat transfer in particular zones, pressure gradients heat transfer coefficients, vapour quality, condensation paths.

Słowa kluczowe

EN

air cooled condenser; heat transfer and pressure drop analysis; minichannels

PL

skraplacz chłodzony powietrzem; analiza wymiany ciepła i spadku ciśnienia; minikanały

• Wydawca: Oficyna Wydawnicza Politechniki Białostockiej
• Czasopismo: Engineering Management in Production and Services
• Rocznik: 2021
• Tom: Vol. 13, no. 4
• Strony: 174--188
• Opis fizyczny: Bibliogr. 34 poz., tab., rys., wykr.

Twórcy

autor

Skiepko Teodor

• Bialystok University of Technology, Poland

• https://orcid.org/0000-0001-8057-3615

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