A theoretical prediction of critical heat flux in subcooled pool boiling during power transients
Understanding and predicting critical heat flux (CHF) behavior during steady-state and transient conditions are of fundamenatal interest in the design, operation, safety of boiling and two-phase flow devices. This paper discusses the results of a comprehensive theoretical study made specifically to model transient CHF behavior in subcooled pool boiling. This study is based upon a simplified steady-state CHF model in terms of the vapor mass growth period. The results obtained from this theory indicate favorable agreement with the experimental data from cylindrical heaters with small radii. The statistical nature of the vapor mass behavior in transient boiling also is considered and upper and lower limits for the current theory are established. Various factors that affect the discrepancy between the data and the theory are discussed.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); University of Central Florida, Orlando (USA). Coll. of Engineering
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5049853
- Report Number(s):
- LA-UR-87-4162; CONF-880724-4; ON: DE88004302
- Resource Relation:
- Conference: 25. American Society of Mechanical Engineers/American Institute of Chemical Engineers/American Nuclear Society national heat transfer conference, Houston, TX, USA, 24 Jul 1988
- Country of Publication:
- United States
- Language:
- English
Similar Records
Critical heat flux modeling in pool boiling for steady-state and power transients
Further considerations of critical heat flux in saturated pool boiling during power transients