lb/h\text{lb/h}

pound per hour

Mass flow rate

The pound per hour is the customary North American mass flow unit, most visible in steam boiler ratings and process engineering. It equals exactly 1.2599788055555...e-4 kilograms per second, since the international avoirdupois pound is exactly 0.45359237 kilograms and the hour exactly 3600 seconds. The ratio is exact as a fraction, though its decimal form repeats and is rounded here.

Watch out: Boiler capacities are quoted several ways that do not convert into one another without more information: pounds of steam per hour, boiler horsepower (34.5 lb/h of steam from and at 212 degrees Fahrenheit), and BTU per hour input or output. Pounds per hour of steam also depends on the feedwater temperature and steam pressure for its energy content.

1 lb/h\text{lb/h} 0.45359237 kg/h\text{kg/h}

One pound per hour in every mass flow rate unit

8,766pound per year (lb/yr)
3,976.19kilogram per year (kg/yr)
453.592gram per hour (g/h)
125.998milligram per second (mg/s)
24pound per day (lb/d)
10.8862kilogram per day (kg/d)
7.55987gram per minute (g/min)
3.97619tonne per year (t/yr)
1pound per hour (lb/h)this unit
0.453592kilogram per hour (kg/h)
0.125998gram per second (g/s)
0.0166667pound per minute (lb/min)
0.012US short ton per day (stpd)
0.0108862tonne per day (t/d)
0.00755987kilogram per minute (kg/min)
0.001thousand pounds per hour (klb/h)
0.0005US short ton per hour (stph)
0.000453592tonne per hour (t/h)
0.000277778pound per second (lb/s)
0.000125998kilogram per second (kg/s)