Briggs & Young against an independent annular finned tube bundle
Tier 2: measurement on a controlled rig.
- What was compared
- The air-side heat transfer coefficient of Briggs and Young's correlation (Kröger, Eq. 5.5.1) on a three-row bi-metal extruded annular finned-tube bundle at Reynolds numbers of 1176 to 4813.
- Against
- Wind-tunnel measurements on the air cooler of the NHR200-II reactor by Wu et al. (2024, Table 1, Eqs. 38 and 40, Table A1), 131 points with a stated expanded uncertainty at 95% confidence, compared through the authors' fit to 126 of them; a measurement on a rig.
- The agreement
- The correlation is 1.0 to 6.4% above the measured fit, highest at the bottom of the Reynolds number range, and every point lies within the case's tolerance of 6.8%, the reference's measurement uncertainty and fit deviation combined.
- What it shows
- The agreement gives Briggs and Young's correlation a measured accuracy on a bundle inside every one of its declared bounds and on data it was not fitted to. It does not cover the pressure-drop correlation (Kröger, Eq. 5.5.6), which lies outside its declared bounds on this bundle.
- Source
- Y. Wu, Y. Liu, Z. Zhang, Q. Xiang, Y. Sun, X. Yang, S. Jiang, 'A quick measurement method of heat transfer coefficient and friction factor for finned tube bundle of the air cooler under large temperature difference', International Journal of Heat and Mass Transfer 227 (2024) 125556Table 1 (test set I), Eq. (38) and Eq. (40), and Table A1. The paper's own low-Re fit Eq. (42) and its Monju comparison are separate results and are not used here.