Calculator Inputs
Use the form below, then press Submit.
Example Data Table
Sample scenarios to compare sizing outcomes.
| Scenario | Area (m²) | Load (W/m²) | Safety | Panel type | Supply/Return (°C) | Required area (m²) | Modules (0.6×1.2) |
|---|---|---|---|---|---|---|---|
| Insulated hobby greenhouse | 20 | 70 | 1.10 | Standard | 45/35 | ~11.6 | ~17 |
| Drafty tunnel house | 60 | 110 | 1.25 | High-output | 50/40 | ~43.4 | ~61 |
| Propagation room zone | 12 | 90 | 1.15 | Low-temp | 40/32 | ~12.5 | ~18 |
These examples are illustrative. Always verify with local design conditions.
Formula Used
Core equations behind the sizing outputs.
-
Design heat load (W):
Area × heat load per area × safety factor
Q = A × q × SF -
Required panel area (m²):
Design heat load ÷ adjusted panel output
Ap = Q ÷ pout -
Module count:
Required area ÷ module area, then rounding
N = round(Ap ÷ Am) -
Water flow (L/min):
Uses water heat capacity and supply-return drop
Flow = (Q ÷ (4186 × ΔT)) × 60
How to Use This Calculator
A practical workflow for greenhouse heating.
- Measure your heated greenhouse area or zone area.
- Enter a realistic heat load for your insulation level.
- Set a safety factor for wind and cold snaps.
- Choose a panel type and water temperatures.
- Pick a module size to estimate panel count.
- Press Submit to show results above.
- Use Download CSV or Download PDF for sharing.