Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9692361 | International Journal of Multiphase Flow | 2005 | 22 Pages |
Abstract
The design of tight-lattice pressurized water reactors requires the knowledge of CHF in tight rod bundles. Experimental investigations on CHF behavior in tight hexagonal 37-rod bundles were performed by using the model fluid Freon-12. About 400 CHF data points have been obtained in a range of parameters: pressure 1.0-2.7Â MPa, mass flux 1.4-4.5Â Mg/m2Â s and bundle exit steam quality â0.4 to +0.2. It is found that the effect of different parameters on CHF in the tight rod bundle is similar to that in tube geometries. The present test results agree also quantitatively well with the CHF data obtained in tubes of comparable hydraulic diameters. Some in the open literature well known CHF correlations proposed for rod bundles under-predict the test results significantly.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
X. Cheng,