Steam Volume Fraction for Typical Runs-5-inch by 2-inch by 60-inch Channel 9 Inlet Velocity as a Function of Exit Steam Volume Fraction ... 10 Variation of Local Phase Velocities, Velocity Ratio, and Velocity Difference for a Typical Boiling Run 11 Effect of Geometry on Velocity Ratio at 600 psig 12 Velocity Ratio as a Function of Superficial Velocity at 150 and 600 psig 13 The Effect of Superficial Velocity on Velocity Ratio at 1200 psia-Data of Hughes 13 Velocity Ratio as a Function of Pressure 14 10 The Effect of Quality on Velocity Ratio at 150 psig 14 11 Working Curve for Prediction of Velocity Ratios at 150 psig. . 15 12 Working Curve for Prediction of Velocity Ratios at 250 psig. . 16 13 Working Curve for the Prediction of Velocity Ratios at 600 psig 16 14 Effect of Velocity on Steam Volume Fractions in Local Boiling in-J-inch by 2-inch Channel 17 15 Effect of Heat Flux on Steam Volume Fractions in Local Boiling in "i-inch by 2-inch Channel 17
The effect of pressure on the density of steam-water mixtures in natural circulation boiling inraultiple rectangular channels was studied to 600 psig with saturated inlet conditions. The effect of pressure on flow rate was also studied. The ratio of the velocity of the steam to the velocity of the water was found to be correlated by the inlet velocity. For a fixed average steam volume fraction, no effect of pressure onflow rate could be found. Neither velocity ratio nor steam volume fraction could be correlated in terms of quality if a sufficient velocity range was studied. The assumption of constant velocity ratio over the channel length seems to be valid. Pressure: 114.7 to 614.7 psia Inlet Velocity: 1.52 to 1.83 ft/sec Exit Quality: 1,9% to 8.2%. The inlet water was near saturation temperature. The exit quality is a thermodynamic weight quality computed from a heat balance. '=1
OBJECTIVE AND SCOPE OF REVIEW At the request of the AEC, an evaluation of the supercritical water reactor was made. The evaluation was to include (l) a review and summary of information on supercritical water reactors, (2) an analysis of supercritical water reactors for production of economic nuclear energy, and (3) recommendation of the necessary research and development program to carry the concept to the stage where an economic energy producer can be constructed. This report encompasses only the first part of the proposed evaluation, namely, a review and summary of the technology that has been developed to date for the use of supercritical water as the coolantmoderator and the working fluid in a supercritical water reactor system. The objective of this survey was to determine whether sufficient technology exists to perform a realistic analysis of the supercritical water reactor as a possible economic power producer. This report is not intended as an all-inclusive review of supercritical water systems. Instead its purpose is to review those aspects which were thought to be most important or crucial in a nuclear reactor. Both the classified and unclassified literature was studied, and in particular the AEC-supported work in this field was reviewed. The information necessary for such an evaluation is contained in the unclassified literature. An attempt was made to make the summary as self-sufficient as possible. Figures and parts of text have been duplicated from other reports where necessary so that the possession of the complete bibliography is not needed to follow the context of the report. In addition, comments on various aspects of the work reviewed are interjected where deemed pertinent.
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