Energy, Unit of Heat.
British Thermal Unit (BTU), calorie, joule, kilojoule, electron volt, erg, foot lbf, foot pound-al, kilo-calorie, kilowatt hour, watt hour,
a) 1 J (Joule) = 0.1020 kpm (kilo pond meter)
= 2.778x10-7 kWh
= 2.389x10-4 kcal
= 0.7376 ft lbf
= 1 (kg m2)/s2
= 1 watt second
= 1 Nm
= 9.478x10-4 BTU
b) 1 kpm = 9.80665 J
(kilo pond meter) = 2.724x10-6 kWh
= 2.342x10-3 kcal
= 7.233 ft lbf
= 9.295x10-3 Btu
c) 1 kWh = 3.6x106 J
= 3600 kJ
= 3.671x105 kpm
= 859.9 kcal
= 2.656x106 ft lbf
= 3.412x103 Btu
d) 1 kJ = 1 kNm
= 1kWs
= 0.000278 kWh
= 103 J
= 0.947813 Btu
= 737.6 ft lbf
= 0.23884 kcal
e) 1 Btu = 1055.06 J
(British thermal unit) = 107.6 kpm
= 2.92875x10-4 kWh
= 251.996 calorie (IT - International Table calorie)
= 0.252 kcal
= 777.649 ft lbf
= 1.0544x1010 erg
= 0.293 watt hour
= 0.999331 Btu (Int Steam Tab)
= 0.998560 Btu (mean)
= 25020.1 foot-poundal
= 107.514 kg force meter
= 1.0751x107 gram-force cm
= 0.000393 hp-hour
= 10.456 liter atm
= 1054.35 wattsecond
f) 1 cal = 4.186 J
g) 1 kcal = 4186.8 J
= 426.9 kpm
= 1.163x10-3 kWh
= 3.088 ft lbf
= 3.9683 Btu
= 1000 cal
h) 1 ft lbf = 1.3558 J
(foot pound force) = 0.1383 kpm
= 3.766x10-7 kWh
= 3.238x10-4 kcal
= 1.285x10-3 BTU
i) 1 hph = 2.6846x106 J
(horse power hour) = 0.7457 kWh
j) 1 erg = 1 (g cm2)/s2
= 10-7 J
= 1 dyne-centimetre
k) 1 electron volt = 1 eV
= 1.602x10-19 J
l) 1 Q = 1018 Btu
= 1.055x1021 J
= 293,000 terawatt hours (TWh).
m) 1 Quad = 1015 Btu
= 293 terawatt hours (TWh)
n) 1 Therm = 100,000 Btu
o) 1 kg m = 7.233 ft lb
= 0.00929 Btu
= 9.806 Joule
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