5. Conversions of power units
Power Name of unit watt(SI unit) atmosphere–cubic centimetre per second BTU(International Table) per hour atmosphere–cubic foot per hour litre-atmosphere per second horsepower(metric) Symbol W Definition ≡ J/s = N·m/s = kg·m2/s3 Relation to SI units = 1 W=kgm2s3 atm ccs ≡ 1 atm × 1 cm3/s BTUIT/h ≡ 1 BTUIT/h atm cfh ≡ 1 atm × 1 cu ft/h L·atm/s ≡ 1 atm × 1 L/s hp ≡ 75 m kgf/s = 0.101 325 W ≈ 0.293 071 W = 0.797 001 244 704 W = 101.325 W = 735.498 75 W
6. Examples of the power in watts
KW: kilowatt(103 watts) MW: megawatt(106 watts) GW: gigawatt(109 watts) TW: terawatt(1012 watts) PW: petawatt(1015 watts) EW: exawatt(1018 watts) ZW: zettawatt(1021 watts) YW: yottawatt(1024 watts) 288