Cubic foot per minute (CFM) is a unit that measures the flow rate of air and is widely used in various industries, from HVAC systems to automotive engineering. Understanding CFM is crucial for designing efficient ventilation systems, as it determines how much air is circulated within a specific space per minute. But did you know that the origins of measuring air flow date back to the early 20th century? Back then, engineers realized the need for standardized measurements to ensure optimal air quality and comfortable living conditions, which led to the popularization of CFM as a standard metric.
Remarkably, one cubic foot of air at room temperature weighs about 0.0807 pounds. With this knowledge, professionals can precisely calibrate systems to achieve desired airflow rates, maximize energy efficiency, and improve air quality. Whether managing the air systems in skyscrapers, homes, or cars, CFM remains a pivotal unit for ensuring environments stay fresh and healthy.
The kilolitre per second (kL/s) is a unit of flow rate used primarily in water management, representing the volume of one kilolitre, or 1,000 liters, flowing past a point every second. While the unit might not be as commonly recognized as liters per minute, it is vital in contexts requiring large-scale fluid flow measurements, such as calculating river discharges or managing wastewater treatment facilities. To put it in perspective, one kilolitre per second is equivalent to the flow rate of about 264 gallons per second, easily filling a standard swimming pool in just a few minutes.
Interestingly, understanding these flow rates becomes crucial during urban planning to ensure sustainable water management systems. It helps engineers design appropriate pipeline capacities and emergency spillways to prevent urban flooding. This illustrates the intersection of environmental sustainability and infrastructure planning, highlighting the kilolitre per second as a cornerstone unit in significant ecological and engineering applications.
Cubic feet per minute | Kilolitres per second |
---|---|
0
ft³/min
|
0
kl/s
|
10
ft³/min
|
0.00471947
kl/s
|
20
ft³/min
|
0.00943894
kl/s
|
30
ft³/min
|
0.0141584
kl/s
|
40
ft³/min
|
0.0188779
kl/s
|
50
ft³/min
|
0.0235974
kl/s
|
60
ft³/min
|
0.0283168
kl/s
|
70
ft³/min
|
0.0330363
kl/s
|
80
ft³/min
|
0.0377558
kl/s
|
90
ft³/min
|
0.0424752
kl/s
|
100
ft³/min
|
0.0471947
kl/s
|
110
ft³/min
|
0.0519142
kl/s
|
120
ft³/min
|
0.0566337
kl/s
|
130
ft³/min
|
0.0613531
kl/s
|
140
ft³/min
|
0.0660726
kl/s
|
150
ft³/min
|
0.0707921
kl/s
|
160
ft³/min
|
0.0755116
kl/s
|
170
ft³/min
|
0.080231
kl/s
|
180
ft³/min
|
0.0849505
kl/s
|
190
ft³/min
|
0.08967
kl/s
|
200
ft³/min
|
0.0943894
kl/s
|
210
ft³/min
|
0.0991089
kl/s
|
220
ft³/min
|
0.103828
kl/s
|
230
ft³/min
|
0.108548
kl/s
|
240
ft³/min
|
0.113267
kl/s
|
250
ft³/min
|
0.117987
kl/s
|
260
ft³/min
|
0.122706
kl/s
|
270
ft³/min
|
0.127426
kl/s
|
280
ft³/min
|
0.132145
kl/s
|
290
ft³/min
|
0.136865
kl/s
|
300
ft³/min
|
0.141584
kl/s
|
310
ft³/min
|
0.146304
kl/s
|
320
ft³/min
|
0.151023
kl/s
|
330
ft³/min
|
0.155743
kl/s
|
340
ft³/min
|
0.160462
kl/s
|
350
ft³/min
|
0.165182
kl/s
|
360
ft³/min
|
0.169901
kl/s
|
370
ft³/min
|
0.17462
kl/s
|
380
ft³/min
|
0.17934
kl/s
|
390
ft³/min
|
0.184059
kl/s
|
400
ft³/min
|
0.188779
kl/s
|
410
ft³/min
|
0.193498
kl/s
|
420
ft³/min
|
0.198218
kl/s
|
430
ft³/min
|
0.202937
kl/s
|
440
ft³/min
|
0.207657
kl/s
|
450
ft³/min
|
0.212376
kl/s
|
460
ft³/min
|
0.217096
kl/s
|
470
ft³/min
|
0.221815
kl/s
|
480
ft³/min
|
0.226535
kl/s
|
490
ft³/min
|
0.231254
kl/s
|
500
ft³/min
|
0.235974
kl/s
|
510
ft³/min
|
0.240693
kl/s
|
520
ft³/min
|
0.245413
kl/s
|
530
ft³/min
|
0.250132
kl/s
|
540
ft³/min
|
0.254851
kl/s
|
550
ft³/min
|
0.259571
kl/s
|
560
ft³/min
|
0.26429
kl/s
|
570
ft³/min
|
0.26901
kl/s
|
580
ft³/min
|
0.273729
kl/s
|
590
ft³/min
|
0.278449
kl/s
|
600
ft³/min
|
0.283168
kl/s
|
610
ft³/min
|
0.287888
kl/s
|
620
ft³/min
|
0.292607
kl/s
|
630
ft³/min
|
0.297327
kl/s
|
640
ft³/min
|
0.302046
kl/s
|
650
ft³/min
|
0.306766
kl/s
|
660
ft³/min
|
0.311485
kl/s
|
670
ft³/min
|
0.316205
kl/s
|
680
ft³/min
|
0.320924
kl/s
|
690
ft³/min
|
0.325644
kl/s
|
700
ft³/min
|
0.330363
kl/s
|
710
ft³/min
|
0.335083
kl/s
|
720
ft³/min
|
0.339802
kl/s
|
730
ft³/min
|
0.344521
kl/s
|
740
ft³/min
|
0.349241
kl/s
|
750
ft³/min
|
0.35396
kl/s
|
760
ft³/min
|
0.35868
kl/s
|
770
ft³/min
|
0.363399
kl/s
|
780
ft³/min
|
0.368119
kl/s
|
790
ft³/min
|
0.372838
kl/s
|
800
ft³/min
|
0.377558
kl/s
|
810
ft³/min
|
0.382277
kl/s
|
820
ft³/min
|
0.386997
kl/s
|
830
ft³/min
|
0.391716
kl/s
|
840
ft³/min
|
0.396436
kl/s
|
850
ft³/min
|
0.401155
kl/s
|
860
ft³/min
|
0.405875
kl/s
|
870
ft³/min
|
0.410594
kl/s
|
880
ft³/min
|
0.415314
kl/s
|
890
ft³/min
|
0.420033
kl/s
|
900
ft³/min
|
0.424752
kl/s
|
910
ft³/min
|
0.429472
kl/s
|
920
ft³/min
|
0.434191
kl/s
|
930
ft³/min
|
0.438911
kl/s
|
940
ft³/min
|
0.44363
kl/s
|
950
ft³/min
|
0.44835
kl/s
|
960
ft³/min
|
0.453069
kl/s
|
970
ft³/min
|
0.457789
kl/s
|
980
ft³/min
|
0.462508
kl/s
|
990
ft³/min
|
0.467228
kl/s
|
1000
ft³/min
|
0.471947
kl/s
|
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