Calculation method
- 1. Throughput (t/yr) = capacity × turns per year; revenue base = throughput × price
- 2. Loss saved = revenue × crop loss rate × store loss reduction
- 3. Off-season gain = revenue × price uplift × 50% (half sold off-season)
- 4. OPEX = throughput × kWh/t × tariff + 2.5% of CAPEX + USD 6/t handling
- 5. Payback = CAPEX ÷ (gain − OPEX); 10-year = 10 × net − CAPEX
Calculations run in SI (m, m², m³, kW, kg, °C). Imperial equivalents: 1 m² = 10.76 ft², 1 m³ = 35.31 ft³, 1 kW = 3,412 BTU/h = 0.284 TR, 1 t = 2,205 lb, °F = °C × 1.8 + 32. 1 t = 2,205 lb; price per lb = price per t ÷ 2,205.

