Flooding and pressure drop

Fig. 24. Generalized method using log scales for estimating packed column flooding and pressure drop, AP, in kPa/m g = gravitational constant, 9.81 m/s t = kinematic viscosity in mm /s (= cSt) E, G have units of kg/(m s) are in kg/m and the packing factor, F, in can be found in...

Figure 9-21D. Loading, flooding and pressure drop coireiation (one of earlier versions). Adapted by permission from Leva, M. Tower Packing and Packed Tower Design, 2nd ed. U.S. Stoneware Co.

X. Liu, H. Guo, F. Ye, and C. F. Ma. Water flooding and pressure drop characteristics in flow channels of proton exchange membrane fuel cells. Electrochimica Acta 52 (2007) 3607-3614. 

Figure 6.2-1. Generalized flooding-and pressure-drop-correlations for packings versus flow parameter.

Estimating flood and pressure drop using the GPDC interpolation charts involves data interpolation and extrapolation within the framework of the generalized pressure drop correlation (GPDC) chart (Fig. 8.196 or c), This technique is expected to yield reliable estimates when appropriate data are available in the vicinity of the operating point. The reliability of the estimates will diminish with the extent to which extrapolation is required. Whenever extensive extrapolation is required, the estimates are unreliable, and the calculation is best abandoned. 

BQster, H. Z. and Gill, D. R. (1992) Chem Engr, London No. 524 (August) s7. Flooding and pressure drop in structured packings. 

Figure 24. Generalized flooding and pressure drop correlation.

Kister, H.Z. Gill, D.R. Flooding and pressure drop prediction for modern random packings. AIChE Spring National Meeting, Orlando, FL, Mar 18-22, 1990. 

Figure 6.1 Generalized correlation for flooding and pressure drop. L. McCabe,...

FIGURE 5.0-12 Eckert method Tor estimating packed column flooding and pressure drop (Ref. 20). (Now ... 

The determination of the flooding velocity in structured packings is best carried out by using interpolation of the flooding and pressure drop charts for individual structured packings in Chapter 10 of Kister (1992). 

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