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Condensation heat transfer of R22 and R410A in horizontal smooth and microfin tubes.
Author(s) : KIM M. H., SHIN J. S., LIM B. H.
Summary
An experimental investigation of condensation heat transfer in 9.52 mm horizontal copper tubes was conducted using R22 and R410A. Constant heat flux of 11.0 kW/m2 was maintained throughout the experiment and refrigerant quality varied from 0.9 to 0.1. The condensation test results at 45 °C were reported for 40-80 kg/h mass flow rate. The local and average condensation coefficients for seven microfin tubes were presented compared with those for a smooth tube. The average condensation coefficients of R22 and R410A for the microfin tubes were 1.7-3.19 and 1.7-2.94 times larger than those in smooth tubes, respectively.
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Pages: 2002-4
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Details
- Original title: Condensation heat transfer of R22 and R410A in horizontal smooth and microfin tubes.
- Record ID : 2003-2198
- Languages: English
- Publication date: 2002/08/26
- Source: Source: Proc. Stockholm Meet., IIR
2002-4; H8; 9 p.; fig.; tabl.; 19 ref.
Indexing
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Themes:
Heat transfer;
Mass transfer - Keywords: R410A; Horizontal tube; Heat transfer coefficient; Extended surface; Microfin tube; Measurement; Heat transfer; Bare pipe; R22; Condensation
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