Thermal design of automotive HVAC condensers for mixed flow regimes in minichannels

• Autorzy: Skiepko T.
• 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 corrugated louver fins on the 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 two phase flow regimes and corresponding experimental correlations for heat transfer and pressure drop. The heat transfer prediction is performed using [epsilon] - NTU[o] methodology.Results of the analysis refer to variations in the flow regimes and vapour quality along the condensation path, overall heat transfer rate, and for particular zones: contributed thermal resistances, heat transfer effectivenesses, flow lengths, heat transfer rates.

Słowa kluczowe

EN

condensers; heat flow analysis; minichannels

PL

analiza przepływu ciepła; kondensatory; minikanały

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2006
• Tom: Vol. 27, no. 1
• Strony: 53--74
• Opis fizyczny: Wykr., rys., tab.,Bibliogr. 24 poz.,

Twórcy

autor

Skiepko T.

• Białystok Technical University, WiejsJca 45c, 15-351 Białystok, Poland

Bibliografia

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