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Investigations on the Droplet Entrainment in a Forced Circulation Flash Evaporator
Author(s) -
Jasch Katharina,
Scholl Stephan
Publication year - 2021
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.202000184
Subject(s) - entrainment (biomusicology) , evaporator , mechanics , thermodynamics , body orifice , materials science , heat flux , chemistry , heat exchanger , heat transfer , physics , mechanical engineering , engineering , rhythm , acoustics
This contribution presents results from entrainment measurements in a forced circulation flash evaporator which was designed to systematically investigate the droplet entrainment under real evaporating conditions. Operating pressures in a range of 100 to 800 mbar(a) and temperature differences between 5 and 55 K were conducted. Gas load factors up to f G = 4.0 Pa 0.5 were achieved with glycerol‐water and water as evaporating liquids. A conductivity measurement was used to determine the absolute entrained liquid and entrainment ratios. The results show an exponential behavior between entrainment, gas load factor, and heat flux due to superimposing effects. Investigation on the pressure drop across the orifice plate showed no influence for operation at gas load factors of f G < 2.5 Pa 0.5 .