海水淡化能耗计算器 — 公式

How to Calculate Desalination Energy

Desalination removes salt from seawater to produce fresh water, requiring significant energy.

Formula

Daily Energy = Volume (gal) * Energy Rate / 1,000

Energy Requirements (kWh per 1,000 gallons)

  • Reverse osmosis (RO): 10-15 kWh
  • Multi-stage flash: 20-30 kWh
  • Multi-effect distillation: 15-25 kWh
  • Forward osmosis: 8-12 kWh (emerging)

    • 计算示例

    A small RO plant producing 100,000 gal/day at 12 kWh/1000 gal with $0.10/kWh electricity.

    1. Daily energy: 100,000 * 12 / 1,000 = 1,200 kWh
    2. Daily cost: 1,200 * $0.10 = $120
    3. Annual cost: 1,200 * 365 * $0.10 = $43,800
    4. Cost per 1,000 gal: 12 * $0.10 = $1.20