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.
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) | British thermal units per second |
---|---|
0
PS
|
0
Btu/s
|
10
PS
|
6.97118
Btu/s
|
20
PS
|
13.94236
Btu/s
|
30
PS
|
20.91355
Btu/s
|
40
PS
|
27.88473
Btu/s
|
50
PS
|
34.85591
Btu/s
|
60
PS
|
41.82709
Btu/s
|
70
PS
|
48.79827
Btu/s
|
80
PS
|
55.76946
Btu/s
|
90
PS
|
62.74064
Btu/s
|
100
PS
|
69.71182
Btu/s
|
110
PS
|
76.683
Btu/s
|
120
PS
|
83.65419
Btu/s
|
130
PS
|
90.62537
Btu/s
|
140
PS
|
97.59655
Btu/s
|
150
PS
|
104.56773
Btu/s
|
160
PS
|
111.53891
Btu/s
|
170
PS
|
118.5101
Btu/s
|
180
PS
|
125.48128
Btu/s
|
190
PS
|
132.45246
Btu/s
|
200
PS
|
139.42364
Btu/s
|
210
PS
|
146.39482
Btu/s
|
220
PS
|
153.36601
Btu/s
|
230
PS
|
160.33719
Btu/s
|
240
PS
|
167.30837
Btu/s
|
250
PS
|
174.27955
Btu/s
|
260
PS
|
181.25073
Btu/s
|
270
PS
|
188.22192
Btu/s
|
280
PS
|
195.1931
Btu/s
|
290
PS
|
202.16428
Btu/s
|
300
PS
|
209.13546
Btu/s
|
310
PS
|
216.10665
Btu/s
|
320
PS
|
223.07783
Btu/s
|
330
PS
|
230.04901
Btu/s
|
340
PS
|
237.02019
Btu/s
|
350
PS
|
243.99137
Btu/s
|
360
PS
|
250.96256
Btu/s
|
370
PS
|
257.93374
Btu/s
|
380
PS
|
264.90492
Btu/s
|
390
PS
|
271.8761
Btu/s
|
400
PS
|
278.84728
Btu/s
|
410
PS
|
285.81847
Btu/s
|
420
PS
|
292.78965
Btu/s
|
430
PS
|
299.76083
Btu/s
|
440
PS
|
306.73201
Btu/s
|
450
PS
|
313.70319
Btu/s
|
460
PS
|
320.67438
Btu/s
|
470
PS
|
327.64556
Btu/s
|
480
PS
|
334.61674
Btu/s
|
490
PS
|
341.58792
Btu/s
|
500
PS
|
348.55911
Btu/s
|
510
PS
|
355.53029
Btu/s
|
520
PS
|
362.50147
Btu/s
|
530
PS
|
369.47265
Btu/s
|
540
PS
|
376.44383
Btu/s
|
550
PS
|
383.41502
Btu/s
|
560
PS
|
390.3862
Btu/s
|
570
PS
|
397.35738
Btu/s
|
580
PS
|
404.32856
Btu/s
|
590
PS
|
411.29974
Btu/s
|
600
PS
|
418.27093
Btu/s
|
610
PS
|
425.24211
Btu/s
|
620
PS
|
432.21329
Btu/s
|
630
PS
|
439.18447
Btu/s
|
640
PS
|
446.15565
Btu/s
|
650
PS
|
453.12684
Btu/s
|
660
PS
|
460.09802
Btu/s
|
670
PS
|
467.0692
Btu/s
|
680
PS
|
474.04038
Btu/s
|
690
PS
|
481.01157
Btu/s
|
700
PS
|
487.98275
Btu/s
|
710
PS
|
494.95393
Btu/s
|
720
PS
|
501.92511
Btu/s
|
730
PS
|
508.89629
Btu/s
|
740
PS
|
515.86748
Btu/s
|
750
PS
|
522.83866
Btu/s
|
760
PS
|
529.80984
Btu/s
|
770
PS
|
536.78102
Btu/s
|
780
PS
|
543.7522
Btu/s
|
790
PS
|
550.72339
Btu/s
|
800
PS
|
557.69457
Btu/s
|
810
PS
|
564.66575
Btu/s
|
820
PS
|
571.63693
Btu/s
|
830
PS
|
578.60811
Btu/s
|
840
PS
|
585.5793
Btu/s
|
850
PS
|
592.55048
Btu/s
|
860
PS
|
599.52166
Btu/s
|
870
PS
|
606.49284
Btu/s
|
880
PS
|
613.46403
Btu/s
|
890
PS
|
620.43521
Btu/s
|
900
PS
|
627.40639
Btu/s
|
910
PS
|
634.37757
Btu/s
|
920
PS
|
641.34875
Btu/s
|
930
PS
|
648.31994
Btu/s
|
940
PS
|
655.29112
Btu/s
|
950
PS
|
662.2623
Btu/s
|
960
PS
|
669.23348
Btu/s
|
970
PS
|
676.20466
Btu/s
|
980
PS
|
683.17585
Btu/s
|
990
PS
|
690.14703
Btu/s
|
1000
PS
|
697.11821
Btu/s
|
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