Boiling incipience in a reboiler tube

Journal Article · Fri Mar 01 04:00:00 EST 1991 · Industrial and Engineering Chemistry Research; (United States)

DOI:https://doi.org/10.1021/ie00051a018· OSTI ID:5540223

Ali, H; Alam, S S ^[1]

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1. Dept. of Chemical Engineering, Aligarh Muslim Univ., Aligarh 202 002 (IN)

This heating surface and liquid temperature distributions were experimentally obtained to identify the boiling incipience conditions in a single vertical tube thermosiphon reboiler with water, acetone, ethanol, and ethylene glycol as test liquids. The test section was an electrically heated stainless steel tube of 25.56-mm i.d. and 1900 mm long. The uniform heat flux values were used in the range of 3800--40 000 W/m{sup 2}, while inlet liquid subcooling were varied from 0.2 to 45.5{degrees} C. The liquid submergence was maintained around 100, 75, 50 and 30%. All the data were generated at 1-atm pressure. The maximum superheats attained around boiling incipience were taken from the wall temperature distributions and correlated with heat flux and physical properties of liquids using the expression of Yin and Abdelmessih. The heated sections required for onset of fully developed boiling with net vapor generation were determined assuming a thermal equilibrium model. In this paper a dimensionless correlation relating these values with heat flux, liquid subcooling, and submergence is proposed.

• OSTI ID: 5540223
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Journal Name: Industrial and Engineering Chemistry Research; (United States) Vol. 30:3; ISSN 0888-5885; ISSN IECRE
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
421000 -- Engineering-- Combustion Systems
ACETONE
ALCOHOLS
ALLOYS
BOILERS
BOILING DETECTION
DATA
DETECTION
EQUILIBRIUM
ETHANOL
EXPERIMENTAL DATA
FLUIDS
GLYCOLS
HEAT FLUX
HEATING
HIGH ALLOY STEELS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
KETONES
LIQUIDS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
POLYETHYLENE GLYCOLS
POLYMERS
STAINLESS STEELS
STEELS
SUPERHEATING
SURFACES
TEMPERATURE DISTRIBUTION
THERMAL EQUILIBRIUM
THERMOSYPHONS
TUBES
WATER