Mass flow
Convert pound per hour (lb/h) to kilogram per second (kg/s). 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 lb/h = 0.0001259979 kg/s
To convert pound per hour to kilogram per second, multiply the lb/h value by 0.0001259979. To go the other way, divide by 0.0001259979 (or multiply by 7936.641).
| lb/h | kg/s |
|---|---|
| 1 | 0.0001259979 |
| 2 | 0.0002519958 |
| 5 | 0.0006299894 |
| 10 | 0.001259979 |
| 25 | 0.003149947 |
| 50 | 0.006299894 |
| 100 | 0.01259979 |
| 250 | 0.03149947 |
| 500 | 0.06299894 |
| 1000 | 0.1259979 |
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 22046.23 lb/h is 2.777778 kg/s.
Multiply the value in lb/h by 0.0001259979 to get kg/s. For example, 10 lb/h = 0.001259979 kg/s.
1 lb/h equals 0.0001259979 kg/s.
Material and energy balances are written on a mass basis, so plant flows convert between kg/h, t/h, and lb/h constantly.