The unit “pound per second” (lb/s) is not just a primitive measure; it’s an essential component in the world of engineering and physics. It’s often utilized to quantify mass flow rates in systems involving fluid dynamics, such as fuel consumption in jet engines. Understanding this unit is crucial, as the efficiency and safety of high-speed transportation systems depend on precise calculations related to pound per second measurements.
While the metric system predominates globally, the pound per second emphasizes its significance primarily in the United States, where the customary system is still widespread. Interestingly, this unit connects everyday materials to vast industries, such as the U.S. Space Program, which must calculate rocket propellant flow rates with extreme precision, showcasing the intersection of everyday units with high-stakes applications.
The “pound per hour” (lb/h) is a unit of flow rate often used in engineering and manufacturing to describe the mass of a substance, such as steam or fuel, moving through a system over time. While commonly associated with industrial processes, this unit plays a crucial role in everyday appliances, like HVAC systems, to ensure optimal performance and energy efficiency by precisely managing the flow of refrigerant or air.
Historically, the pound per hour measurement gained prominence during the Industrial Revolution when steam engines were vital for transportation and industry. By calculating steam flow in pounds per hour, engineers of the time could effectively control machinery, optimize fuel use, and enhance productivity—a legacy that continues to influence modern engineering practices.
Pounds per second | Pounds per hour |
---|---|
0
lb/s
|
0
lb/h
|
10
lb/s
|
36000
lb/h
|
20
lb/s
|
72000
lb/h
|
30
lb/s
|
108000
lb/h
|
40
lb/s
|
144000
lb/h
|
50
lb/s
|
180000
lb/h
|
60
lb/s
|
216000
lb/h
|
70
lb/s
|
252000
lb/h
|
80
lb/s
|
288000
lb/h
|
90
lb/s
|
324000
lb/h
|
100
lb/s
|
360000
lb/h
|
110
lb/s
|
396000
lb/h
|
120
lb/s
|
432000
lb/h
|
130
lb/s
|
468000
lb/h
|
140
lb/s
|
504000
lb/h
|
150
lb/s
|
540000
lb/h
|
160
lb/s
|
576000
lb/h
|
170
lb/s
|
612000
lb/h
|
180
lb/s
|
648000
lb/h
|
190
lb/s
|
684000
lb/h
|
200
lb/s
|
720000
lb/h
|
210
lb/s
|
756000
lb/h
|
220
lb/s
|
792000
lb/h
|
230
lb/s
|
828000
lb/h
|
240
lb/s
|
864000
lb/h
|
250
lb/s
|
900000
lb/h
|
260
lb/s
|
936000
lb/h
|
270
lb/s
|
972000
lb/h
|
280
lb/s
|
1008000
lb/h
|
290
lb/s
|
1044000
lb/h
|
300
lb/s
|
1080000
lb/h
|
310
lb/s
|
1116000
lb/h
|
320
lb/s
|
1152000
lb/h
|
330
lb/s
|
1188000
lb/h
|
340
lb/s
|
1224000
lb/h
|
350
lb/s
|
1260000
lb/h
|
360
lb/s
|
1296000
lb/h
|
370
lb/s
|
1332000
lb/h
|
380
lb/s
|
1368000
lb/h
|
390
lb/s
|
1404000
lb/h
|
400
lb/s
|
1440000
lb/h
|
410
lb/s
|
1476000
lb/h
|
420
lb/s
|
1512000
lb/h
|
430
lb/s
|
1548000
lb/h
|
440
lb/s
|
1584000
lb/h
|
450
lb/s
|
1620000
lb/h
|
460
lb/s
|
1656000
lb/h
|
470
lb/s
|
1692000
lb/h
|
480
lb/s
|
1728000
lb/h
|
490
lb/s
|
1764000
lb/h
|
500
lb/s
|
1800000
lb/h
|
510
lb/s
|
1836000
lb/h
|
520
lb/s
|
1872000
lb/h
|
530
lb/s
|
1908000
lb/h
|
540
lb/s
|
1944000
lb/h
|
550
lb/s
|
1980000
lb/h
|
560
lb/s
|
2016000
lb/h
|
570
lb/s
|
2052000
lb/h
|
580
lb/s
|
2088000
lb/h
|
590
lb/s
|
2124000
lb/h
|
600
lb/s
|
2160000
lb/h
|
610
lb/s
|
2196000
lb/h
|
620
lb/s
|
2232000
lb/h
|
630
lb/s
|
2268000
lb/h
|
640
lb/s
|
2304000
lb/h
|
650
lb/s
|
2340000
lb/h
|
660
lb/s
|
2376000
lb/h
|
670
lb/s
|
2412000
lb/h
|
680
lb/s
|
2448000
lb/h
|
690
lb/s
|
2484000
lb/h
|
700
lb/s
|
2520000
lb/h
|
710
lb/s
|
2556000
lb/h
|
720
lb/s
|
2592000
lb/h
|
730
lb/s
|
2628000
lb/h
|
740
lb/s
|
2664000
lb/h
|
750
lb/s
|
2700000
lb/h
|
760
lb/s
|
2736000
lb/h
|
770
lb/s
|
2772000
lb/h
|
780
lb/s
|
2808000
lb/h
|
790
lb/s
|
2844000
lb/h
|
800
lb/s
|
2880000
lb/h
|
810
lb/s
|
2916000
lb/h
|
820
lb/s
|
2952000
lb/h
|
830
lb/s
|
2988000
lb/h
|
840
lb/s
|
3024000
lb/h
|
850
lb/s
|
3060000
lb/h
|
860
lb/s
|
3096000
lb/h
|
870
lb/s
|
3132000
lb/h
|
880
lb/s
|
3168000
lb/h
|
890
lb/s
|
3204000
lb/h
|
900
lb/s
|
3240000
lb/h
|
910
lb/s
|
3276000
lb/h
|
920
lb/s
|
3312000
lb/h
|
930
lb/s
|
3348000
lb/h
|
940
lb/s
|
3384000
lb/h
|
950
lb/s
|
3420000
lb/h
|
960
lb/s
|
3456000
lb/h
|
970
lb/s
|
3492000
lb/h
|
980
lb/s
|
3528000
lb/h
|
990
lb/s
|
3564000
lb/h
|
1000
lb/s
|
3600000
lb/h
|
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