Measurements of Boiling Two Phase Flow Pressure Drop in a Horizontal Forced Convective Channel

摘要

Two-phase flow pressure drop measurements were conducted for water-steam in a 97 inch long (0.625 inch OD) forced convective, directly heated horizontal channel. More than 260 differential pressure measurements were obtained from 7 equally spaced tap positions on the test section, using highly reliable instruments. The advancement of the present measurements as compared to the existing literature is that, for each test run, the entire axial pressure drop profile is constructed. This would certainly facilitate future model development and verification work. While no attempt was made to select the best predictive models, some sample calculations were performed to check against 3 existing models. Discrepancies between the measured data and the predicted results vary from +-5 to 40%. Reasons for the above differences were discussed. Recommendations for future work were also given. (ERA citation 10:002241)