Abstract
Heat exchangers with microchannels (hydraulic diameter less than 1 mm) are attracting significant attention lately. Performance of these heat exchangers mostly evaporators is greatly affected by imperfect distribution of a two-phase fluid to each channel. This paper presents an overview of the issue, showing basic options to evenly distribute single and two-phase fluid and the methods to determine maldistribution. Special attention is given to describing two-phase regimes in an adiabatic horizontal header with R134a as a fluid, describing a two-phase map with area of good distribution.
Original language | English (US) |
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Pages (from-to) | 61-68 |
Number of pages | 8 |
Journal | Heat Transfer Engineering |
Volume | 25 |
Issue number | 3 |
DOIs | |
State | Published - Apr 2004 |
Externally published | Yes |
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanical Engineering
- Fluid Flow and Transfer Processes