Title of article
Friction factor and heat transfer coefficient of R134a liquid flow in mini-channels
Author/Authors
Bruno Agostini، نويسنده , , Barbara Watel، نويسنده , , André Bontemps، نويسنده , , Bernard Thonon، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2002
Pages
14
From page
1821
To page
1834
Abstract
This article presents an experimental study of friction factor and heat transfer coefficient for a vertical liquid up-flow of R134a. A flat aluminium multiport extruded tube composed of 11 parallel rectangular channels (3.28 mm×1.47 mm) with hydraulic diameter of 2.01 mm was used. Mass flux ranges from 28 to 800 kg m−2 s−1 and heat flux from 0.84 to 22 kW m−2. Working pressure is around 2000 kPa and inlet subcooling around 70 K. The results were compared with those found in the literature for conventional tubes and mini-channels, and discussed.
Keywords
Compact heat exchanger-------------------------------------------------------------------------------- , Mini-channels , heat transfer coefficient , Air-conditioning , Friction factor
Journal title
Applied Thermal Engineering
Serial Year
2002
Journal title
Applied Thermal Engineering
Record number
1023564
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