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ENGELSKA OCH AMERIKANSKA ENHETER
Energienheter1
1 J = 7,375 62" 10"1 ftJb.
= 9,477 0-10"4 BTU
= 5,12196- 10"3 ft3 ■ lb./in.2
= 3,776 73 • 10"7 hkh
= 3,725 06- lO-7 HPh
1 kgfm=7,233 0 ft.lb.
= 9,293 8 • lO’3 BTU
= 5,022 93-10"2 ft3 • lb./in.2
= 3,703 70 • 10"6 hkh
= 3,653 04- 10"ß HPh
1 ft.lb.= 1,355 82 J
= 1,382 55 • 10"1 kgfm
= 3,765 O • 10"7 kWh
= 3,237 9 • 10"4 kcal
= 1,284 91- 10"3 BTU
= 6,944 44- 10"3 ft3 • lb./in.2
= 5,120 56 • 10"7 hkh
= 5,050 51- lO*7 HPh
1 kWh=2,656 0- 106 ft.lb.
= 3,412 75- 103 BTU
= 1,844 46 -104 ft3 • lb./in.2
= 1,360 03 hkh
= 1,341 42 HPh
1 kcal = 3,088 4 • 103 ft.lb.
= 3,968 3 BTU
= 2,144 7-10 ft3 • lb./in.2
= 1,581 44- 10"3 hkh
= 1,559 81- 10"3 HPh
1 BTU-= 1,055 18 • 103 J
= 1,075 99 • 102 kgfm
= 7,782 6 • 102 ft.lb.
= 2,930 19- 10"4 kWh
= 2,519 96 • 10"1 kcal
= 5,404 6 ft3 • lb./in.2
= 3,985 18 • 10"4 hkh
= 3,930 66 • 10’4 HPh
1 ft3 -lb./in.2= 1,952 38 • 102 J
= 1,990 87 • 10 kgfm
= 1,440 0- 102 ft.lb.
1 ft3 • lb./in.2 = 5,421 6 • lO’5 kWh
= 4,662 9 • 10"2 kcal
= 1,850 27- 10"1 BTU
= 7,373 60 • 10~5 hkh
= 7,272 72- 10"3 HPh
1 hkh = 2,647 8 • 10® J
= 2,70000 • 105 kgfm
= 1,952 91 - 106 ft.lb.
= 7,352 78- 10-1 kWh
= 6,232 33 • 102 kcal
= 2,509 30 - 103 BTU
= 1,356 19- 104 ft3 • lb./in.2
= 9,863 20- 10"1 HPh
1 HPh** = 2,684 5*10® J
= 2,737 45- 105 kgfm
= 1,980 00- 10® ft.lb.
= 7,454 76- lO’1 kWh
= 6,411 04 • 102 kcal
= 2,544 10- 103 BTU
= 1,375 00- 104 ft3 • lb./in.2
= 1,013 87 hkh
Effektenheter1
1 erg/s= 7,375 62 • 10"8 ft.lb./s
= 1,341 02- 10"10 HP
= 9,477 0-10’11 BTU/s
1 kgfm/s = 7,233 oi ft.lb./s
= 1,315 09 - 10"2 HP
= 9,293 8- 10"3 BTU/s
1 ft.lb./s= 1,355 82 • 107 erg/s
= 1,382 55 • 10"1 kgfm/s
= 1,843 40 • 10"3 hk
= 1,818 18- 10’3 HP
= 1,284 91- 10-3 BTU/s
1 kcal/s = 3,088 4 • 103 ft.lb./s
= 5,693 2 hk
= 5,615 32 HP
= 4,186 05 kW
= 3,968 3 BTU/s
1 Då de engelska kraftenheterna hänföra sig till lokala massaenheter ha de här redu?
cerats till kgf etc. Se Enheter och måttsystem, s. 198 och not s. 199.
* BTU = British Thermal Units. ** HPh = Horse power houre.
210
INGENJÖRSHANDBOKEN I
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