Abstract
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Highlights
Venturi tubes are usually used for gas flow rate measurements
The influences of venturi effect, inlet Reynolds number and venturi diameter ratio on the heat and mass transfer are discussed in detail
If the hydrodynamic aspects are well known in venturi tubes, studies concerning thermal and mass transfer are scarce these systems are more and more used in gas and oil industries for wet gas flow rate measurements (Lide et al, 2007)
Summary
Venturi tubes are usually used for gas flow rate measurements. Their facility to design has led to many studies (Elperin et al, 2002; Jitschin et al, 1999; Jitschin, 2004; Li et al, 2000). In others type of channels, heat and mass transfer between a wet wall and flow has been widely studied (Fujita, 1993; Baumann et al, 1986; Yan, 1993; Zheng et al, 1996) This process, widely encountered in practice, is used to protect walls from high temperature gas stream or to cool heated walls in industrials applications (evaporative cooling for waste heat disposal, towers cooling, turbine blade cooling, microelectronic system component cooling, etc.). Yan and Lin (1989) were the first to investigate the effects of liquid film evaporation from a wetted wall of a vertical channel on transfers They showed that heat transfer is dominated by the latent heat. Of heat and mass transfer by forced convection through a venturi tube in which the walls are wetted
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