Effectiveness Ntu: Crossflow Cmin mixed
0.50 0.5 to 0.75 0.5
Heat exchanger effectiveness (ε) vs. number of transfer units (NTU) and capacity ratio (Cr = Cmin/Cmax) for seven flow configurations: parallel-flow, counterflow, shell-and-tube 1-pass, shell-and-tube 2-pass, crossflow both unmixed, crossflow Cmin mixed, crossflow Cmax mixed. Data digitized from Incropera Figures 11.10-11.15.
| hx configuration | sk | capacity ratio (dimensionless) | effectiveness (dimensionless) | mixed fluid | ntu (dimensionless) |
|---|---|---|---|---|---|
| Crossflow Cmin mixed | 0.50 0.5 | 0.5 | 0.36 | C min | 0.5 |
| Crossflow Cmin mixed | 0.50 1.0 | 0.5 | 0.56 | C min | 1 |
| Crossflow Cmin mixed | 0.50 1.5 | 0.5 | 0.69 | C min | 1.5 |
| Crossflow Cmin mixed | 0.50 2.0 | 0.5 | 0.78 | C min | 2 |
| Crossflow Cmin mixed | 0.50 2.5 | 0.5 | 0.83 | C min | 2.5 |
| Crossflow Cmin mixed | 0.50 3.0 | 0.5 | 0.87 | C min | 3 |
| Crossflow Cmin mixed | 0.50 4.0 | 0.5 | 0.92 | C min | 4 |
| Crossflow Cmin mixed | 0.50 5.0 | 0.5 | 0.95 | C min | 5 |
| Crossflow Cmin mixed | 0.75 0.0 | 0.75 | 0 | C min | 0 |
| Crossflow Cmin mixed | 0.75 0.5 | 0.75 | 0.34 | C min | 0.5 |
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