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Boiling heat transfer of Nitrogen in a thermosyphon condenser‐reboiler
Author(s) -
Sakaue Seiichi
Publication year - 1997
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690430207
Subject(s) - reboiler , condenser (optics) , thermodynamics , thermosiphon , superheating , boiling , heat transfer , heat flux , heat transfer coefficient , chemistry , heat exchanger , nucleate boiling , materials science , physics , light source , optics
An experimental investigation was conducted to determine the boiling heat‐transfer characteristics in a thermosyphon condenser‐reboiler of air‐separation plants. The test section was a plate‐fin heat exchanger of practical size of 0.106 m width and 2.56 m length. The testing fluid was nitrogen. Experiments were carried out within a range of pressure from 150 to 300 kPa, submergence from 1.95 to 2.80 m, and heat flux up to 11 kW/m 2 under constant wall‐temperature condition. The liquid superheat at the onset of boiling was rather significant. The boiling heat‐transfer coefficients obtained agreed well with Chen's correlation modified by Colburn's J factor within a mean deviation of 9.3%.