ShareHeat transfer and pressure drop of R744 (CO2) in extruded aluminium multi-port profiles during supercritical cooling.
Wärmeübertragung und Druckabfall von R744 (CO2) in extrudierten Aluminium-Multiport-Profilen bei Überkritischer Abkühlung.
Author(s) : HAFNER A., MUNKEJORD S. T.
Summary
A test installation and conventional correlations were used to calculate what heat transfer coefficients could be obtained using CO2 at high pressures and small diameters at temperatures under the pseudo-critical range. Above this range the coefficient was as high as 100% over the calculated valves. Ordinary correlations gave satisfactory pressure-drop valves.
Details
- Original title: Wärmeübertragung und Druckabfall von R744 (CO2) in extrudierten Aluminium-Multiport-Profilen bei Überkritischer Abkühlung.
- Record ID : 2000-0089
- Languages: German
- Source: DKV-Tagungsbericht 25. 1998, Würzburg.
- Publication date: 1998/11/18
- Document available for consultation in the library of the IIR headquarters only.
Links
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Indexing
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Themes:
Heat transfer;
CO2 - Keywords: Supercritical state; Heat transfer coefficient; Geometry; Measurement; Heat transfer; Aluminium; Refrigerant; Heat exchanger; CO2; Pressure drop
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