Hot Water Consumption vs. Occupants
Consumption of hot water per person or occupant.
Flow rate and temperature are the primary factors to be determined in the hydraulic and thermal design of water-heating and piping systems.
The table below indicates hot water consumption per occupant or person in typical buildings:
| Type of building | Consumption per occupant | Peak demand per occupant | Storage per occupant | |||
|---|---|---|---|---|---|---|
| liter/day | gal/day | liter/hr | gal/hr | liter | gal | |
| Factories (no process) | 22 - 45 | 5 - 10 | 9 | 2 | 5 | 1 |
| Hospitals, general | 160 | 35 | 30 | 7 | 27 | 6 |
| Hospitals, mental | 110 | 25 | 22 | 5 | 27 | 6 |
| Hostels | 90 | 20 | 45 | 10 | 30 | 7 |
| Hotels | 90 - 160 | 20 - 35 | 45 | 10 | 30 | 7 |
| Houses and flats | 90 - 160 | 20 - 35 | 45 | 10 | 30 | 7 |
| Offices | 22 | 5 | 9 | 2 | 5 | 1 |
| Schools, boarding | 115 | 25 | 20 | 4 | 25 | 5 |
| Schools, day | 15 | 3 | 9 | 2 | 5 | 1 |
