BURN-OUT ANALYSIS. PART 4. APPLICATION OF A LOCAL CONDITIONS HYPOTHESIS TO WORLD DATA FOR UNIFORMLY HEATED ROUND TUBES AND RECTANGULAR CHANNELS
Technical Report
·
OSTI ID:4156623
Burn-out in uniformly heated round tubes and rectangular channels with liquid water inlet, can be correlated very accurately by a local-conditions hypothesis stating that burn-out depends on the tube diameter or channel gap, mass velocity, pressure, and local enthalpy or steam fraction. The hypothesis is combined with the heat balance equation and with the near linear relationship that exists between burn-out heat flux and inlet subcooling, to give a burn-out equation that was optimised by a computer using all available World data. The high order of accuracy of the optimised burn-out equation, and the very wide range of system parameters on which it is based, permit a thorough examination of parametric effects on burn-out, which is not possible from inspection of data alone. Important observations are maxima in the effect of mass velocity and tube diameter on the burn-out flux, and the existence of a pronounced peak at about 1,500 psia in the effect of pressure. (auth)
- Research Organization:
- United Kingdom Atomic Energy Authority. Reactor Group, Risley, Lancs, England (United Kingdom)
- NSA Number:
- NSA-18-005462
- OSTI ID:
- 4156623
- Report Number(s):
- AEEW-R-267
- Country of Publication:
- United Kingdom
- Language:
- English
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