| Name | Description |
|---|---|
| K_1 | Diameter Effect Factor |
| K_2 | Bundle Geometry Factor |
| K_3 | Mid-Plane Spacer Factor |
| K_4 | Heated Length Factor |
| K_5 | Axial Flux Distribution Factor |
| K_6 | Radial/Circumferential (R/C) Flux Distribution Factor |
| K_7 | Flow-Orientation Factor |
| K_8 | Vertical Low-Flow Factor - A minus sign refers to downward flow |