Coil Selection Calculator
Size heating and cooling coils for air handling units.
Coil Design Guidelines
| Parameter | Cooling | Heating |
|---|---|---|
| Face Velocity | 400-550 FPM | 500-700 FPM |
| Rows | 4-8 rows | 1-2 rows |
| Water Delta T | 10-14F | 20-40F |
| FPI | 10-14 | 8-12 |
Formulas
Sensible: Qs = 1.08 x CFM x DT
Total: Qt = 4.5 x CFM x Dh
Water Flow: GPM = Q / (500 x DT)
LMTD: (DTin - DTout) / ln(DTin/DTout)