The British thermal unit per second (BTU/s) is a measure of power, specifically the rate at which energy is expended or transferred. Originating from the British thermal unit, which is defined as the amount of energy required to raise the temperature of one pound of water by one degree Fahrenheit, the BTU/s provides a glimpse into the historical roots of energy measurement before the metric system’s widespread adoption. In modern applications, BTU/s is often used in the heating, ventilation, and air conditioning (HVAC) industry to quantify the power of heating and cooling systems, offering a unique blend of historical measurement with contemporary utility.
Despite its historical origins, the BTU/s is incredibly relevant today. To put it into perspective, one BTU/s is approximately equivalent to 1,055 watts, a power level comparable to that of a small household appliance. This conversion shows how BTU/s bridges older and newer methods of measuring power, reminding us of the diverse systems our modern technology stands upon. Whether you’re cooling a building or generating heat for industrial processes, understanding BTU/s offers a window into how energy flow impacts various aspects of daily life and industry.
Horsepower (metric) is a fascinating unit of measurement that dates back to the 18th century, when James Watt, the developer of the steam engine, sought to compare the power output of his engines to that of draft horses. The metric horsepower is defined as the amount of power required to lift a 75-kilogram mass one meter vertically in one second, which is equivalent to 735.5 watts. Interestingly, this unit persists in many regions, particularly in the automotive industry, where it is used to convey the strength of vehicle engines. Despite advancements in engine technology, the image of raw horsepower continues to captivate our imagination, embodying both history and precision engineering.
British thermal units per second | Horsepower (metric) |
---|---|
0
Btu/s
|
0
PS
|
10
Btu/s
|
14.34477
PS
|
20
Btu/s
|
28.68954
PS
|
30
Btu/s
|
43.03431
PS
|
40
Btu/s
|
57.37908
PS
|
50
Btu/s
|
71.72385
PS
|
60
Btu/s
|
86.06862
PS
|
70
Btu/s
|
100.41339
PS
|
80
Btu/s
|
114.75816
PS
|
90
Btu/s
|
129.10292
PS
|
100
Btu/s
|
143.44769
PS
|
110
Btu/s
|
157.79246
PS
|
120
Btu/s
|
172.13723
PS
|
130
Btu/s
|
186.482
PS
|
140
Btu/s
|
200.82677
PS
|
150
Btu/s
|
215.17154
PS
|
160
Btu/s
|
229.51631
PS
|
170
Btu/s
|
243.86108
PS
|
180
Btu/s
|
258.20585
PS
|
190
Btu/s
|
272.55062
PS
|
200
Btu/s
|
286.89539
PS
|
210
Btu/s
|
301.24016
PS
|
220
Btu/s
|
315.58493
PS
|
230
Btu/s
|
329.9297
PS
|
240
Btu/s
|
344.27447
PS
|
250
Btu/s
|
358.61924
PS
|
260
Btu/s
|
372.96401
PS
|
270
Btu/s
|
387.30877
PS
|
280
Btu/s
|
401.65354
PS
|
290
Btu/s
|
415.99831
PS
|
300
Btu/s
|
430.34308
PS
|
310
Btu/s
|
444.68785
PS
|
320
Btu/s
|
459.03262
PS
|
330
Btu/s
|
473.37739
PS
|
340
Btu/s
|
487.72216
PS
|
350
Btu/s
|
502.06693
PS
|
360
Btu/s
|
516.4117
PS
|
370
Btu/s
|
530.75647
PS
|
380
Btu/s
|
545.10124
PS
|
390
Btu/s
|
559.44601
PS
|
400
Btu/s
|
573.79078
PS
|
410
Btu/s
|
588.13555
PS
|
420
Btu/s
|
602.48032
PS
|
430
Btu/s
|
616.82509
PS
|
440
Btu/s
|
631.16986
PS
|
450
Btu/s
|
645.51462
PS
|
460
Btu/s
|
659.85939
PS
|
470
Btu/s
|
674.20416
PS
|
480
Btu/s
|
688.54893
PS
|
490
Btu/s
|
702.8937
PS
|
500
Btu/s
|
717.23847
PS
|
510
Btu/s
|
731.58324
PS
|
520
Btu/s
|
745.92801
PS
|
530
Btu/s
|
760.27278
PS
|
540
Btu/s
|
774.61755
PS
|
550
Btu/s
|
788.96232
PS
|
560
Btu/s
|
803.30709
PS
|
570
Btu/s
|
817.65186
PS
|
580
Btu/s
|
831.99663
PS
|
590
Btu/s
|
846.3414
PS
|
600
Btu/s
|
860.68617
PS
|
610
Btu/s
|
875.03094
PS
|
620
Btu/s
|
889.37571
PS
|
630
Btu/s
|
903.72047
PS
|
640
Btu/s
|
918.06524
PS
|
650
Btu/s
|
932.41001
PS
|
660
Btu/s
|
946.75478
PS
|
670
Btu/s
|
961.09955
PS
|
680
Btu/s
|
975.44432
PS
|
690
Btu/s
|
989.78909
PS
|
700
Btu/s
|
1004.13386
PS
|
710
Btu/s
|
1018.47863
PS
|
720
Btu/s
|
1032.8234
PS
|
730
Btu/s
|
1047.16817
PS
|
740
Btu/s
|
1061.51294
PS
|
750
Btu/s
|
1075.85771
PS
|
760
Btu/s
|
1090.20248
PS
|
770
Btu/s
|
1104.54725
PS
|
780
Btu/s
|
1118.89202
PS
|
790
Btu/s
|
1133.23679
PS
|
800
Btu/s
|
1147.58156
PS
|
810
Btu/s
|
1161.92632
PS
|
820
Btu/s
|
1176.27109
PS
|
830
Btu/s
|
1190.61586
PS
|
840
Btu/s
|
1204.96063
PS
|
850
Btu/s
|
1219.3054
PS
|
860
Btu/s
|
1233.65017
PS
|
870
Btu/s
|
1247.99494
PS
|
880
Btu/s
|
1262.33971
PS
|
890
Btu/s
|
1276.68448
PS
|
900
Btu/s
|
1291.02925
PS
|
910
Btu/s
|
1305.37402
PS
|
920
Btu/s
|
1319.71879
PS
|
930
Btu/s
|
1334.06356
PS
|
940
Btu/s
|
1348.40833
PS
|
950
Btu/s
|
1362.7531
PS
|
960
Btu/s
|
1377.09787
PS
|
970
Btu/s
|
1391.44264
PS
|
980
Btu/s
|
1405.7874
PS
|
990
Btu/s
|
1420.13217
PS
|
1000
Btu/s
|
1434.47694
PS
|
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