Mass flow
Convert kilogram per second (kg/s) to kilogram per hour (kg/h). Mass flow rate is the mass passing a point per unit time — the conserved quantity in a material balance, independent of temperature and pressure.
1 kg/s = 3600 kg/h
To convert kilogram per second to kilogram per hour, multiply the kg/s value by 3600. To go the other way, divide by 3600 (or multiply by 0.0002777778).
| kg/s | kg/h |
|---|---|
| 1 | 3600 |
| 2 | 7200 |
| 5 | 18000 |
| 10 | 36000 |
| 25 | 90000 |
| 50 | 180000 |
| 100 | 360000 |
| 250 | 900000 |
| 500 | 1800000 |
| 1000 | 3600000 |
Material and energy balances are written on a mass basis, so plant flows convert between kg/h, t/h, and lb/h constantly.
Relief loads and heat duties depend on mass flow, not volumetric flow — keep the two straight when a stream's density changes.
Worked example. A mass flow rate of 2.777778 kg/s is 10000 kg/h.
Multiply the value in kg/s by 3600 to get kg/h. For example, 10 kg/s = 36000 kg/h.
1 kg/s equals 3600 kg/h.
Material and energy balances are written on a mass basis, so plant flows convert between kg/h, t/h, and lb/h constantly.