Measurement of direct-contact condensation of pure saturated vapour on an injection spray by applying pulsed laser holography

An application of pulsed laser holography for direct measurement of the growth of subcooled spray droplets in a pure saturated vapour is presented. The spray flow corresponds to intermediate and high droplet Reynolds number (100 less than or equal to Re less than or equal to 3500) while the vapour p...

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Bibliographic Details
Published in:International journal of heat and mass transfer 1992-03, Vol.35 (3), p.691-702
Main Authors: MAYINGER, F, CHAVEZ, A
Format: Article
Language:English
Subjects:
Applied sciences
condensation
drops
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Heat transfer
measurement
Theoretical studies. Data and constants. Metering
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Summary:An application of pulsed laser holography for direct measurement of the growth of subcooled spray droplets in a pure saturated vapour is presented. The spray flow corresponds to intermediate and high droplet Reynolds number (100 less than or equal to Re less than or equal to 3500) while the vapour pressure is varied in a wide range of reduced pressures (0.03 less than or equal to p sub(r) less than or equal to 0.3). The holographic reconstructions reveal a strong relation between the vapour pressure and the spray geometry. At moderate liquid flow rate and relatively high vapour pressure, subsequent pressure increments produce dramatic changes in the spray geometry and considerably reduce the condensation rate.
ISSN:0017-9310
1879-2189
DOI:10.1016/0017-9310(92)90128-F