Ako vypočítať Rainwater Harvest
Čo je Rainwater Harvest?
Rainwater harvesting collects precipitation for irrigation, toilet flushing, or emergency use. It reduces groundwater demand and stormwater runoff.
Vzorec
Calculate: Annual collection = Catchment area × Annual rainfall × Collection efficiency
Sprievodca krok za krokom
- 1Calculate: Annual collection = Catchment area × Annual rainfall × Collection efficiency
- 2Roof collection: 90% efficiency, pavement: 70%, storage needed for dry periods
- 31000 m² roof, 1 m rain: 700-900 m³ water available
Worked Examples
Vstup
Residential roof 100 m², annual rainfall 500 mm
Výsledok
Annual collection ~45 m³ (45,000 L), covers 30-40% irrigation needs
Location dependent
Common Mistakes to Avoid
- ✕Under-sizing tank for dry season needs
- ✕Forgetting overflow management (can cause flooding)
Frequently Asked Questions
Is rainwater safe to drink?
No without treatment. Suitable for irrigation, toilet, washing after basic filtration.
How large must storage tank be?
Rule of thumb: volume for one dry month. Location's dry season determines sizing.
Ste pripravení počítať? Vyskúšajte bezplatnú kalkulačku Rainwater Harvest
Vyskúšajte sami →