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Effect of fin geometry on condensation of downward-flowing R123/R134a in a staggered bundle of horizontal low-finned tubes.

Author(s) : HONDA H., TAKAMATSU H., TAKATA N.

Summary

Experiments were conducted to obtain row-by-row heat and mass transfer data during condensation of downward-flowing zeotropic mixture R123/R134a in a staggered bundle of horizontal low-finned tubes. The vapour temperature and the mass fraction of R134a at the tube bundle inlet were about 50°C and 14% respectively. The refrigerant mass velocity ranged from 9 to 33 kg/m2 second, and the condensation temperature difference from 2 to 10 deg K. Four kinds of low-finned tubes with differences in geometry were tested.

Details

Original title: Effect of fin geometry on condensation of downward-flowing R123/R134a in a staggered bundle of horizontal low-finned tubes.
Record ID : 2000-0121
Languages: English
Source: Heat transfer in condensation and evaporation: application to industrial and environmental processes. Preprints of the EUROTHERM Seminar 62.
Publication date: 1998/11/17
Document available for consultation in the library of the IIR headquarters only.

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Indexing

Themes: HCFCs;
HFCs;
Mass transfer;
Blends
Keywords: R134a; Heat transfer coefficient; Geometry; Finned tube; Measurement; Mass transfer; Heat transfer; R123; Binary mixture; Bundle; Condensation