 Единицы измерений
 Энергетические единицы  1 J (joule) = 1 Ws = 4.1868 cal  1 GJ (gigajoule) = 10 E9 J  1 TJ (terajoule) = 10 E12 J  1 PJ (petajoule) = 10 E15 J  1 (kilowatt hour) kWh = 3,600,000 Joule  1 toe (tonne oil equivalent)  = 7.4 barrels of crude oil in primary energy  = 7.8 barrels in total final consumption  = 1270 m3 of natural gas  = 2.3 metric tonnes of coal *)  1 Mtoe (million tonne oil equivalent) = 41.868 PJ  Электроэнергия Electrical power is usually measured in watt (W), kilowatt (kW), megawatt (MW), etc.  Power is energy transfer per unit of time.  1 kW =1000 W  1 MW = 1 000 000 W  1 GW = 1 000 MW  1 TW = 1 000 000 MW  Power (e.g. in W) may be measured at any point in time, whereas energy (e.g. in kWh)  has to be measured during a certain period, e.g. a second, an hour, or a year.  Аббревиатуры m = metre = 3.28 ft.  s = second  h = hour  W = Watt  HP = horsepower  J = Joule  cal = calorie  toe = tonnes of oil equivalent  Hz= Hertz (cycles per second)  10 E-12 = p pico = 1/1000,000,000,000  10 E-9 = n nano = 1/1000,000,000  10 E-6 = µ micro = 1/1000,000  10 E-3 = m mili = 1/1000  10 E3 = k kilo = 1,000 = thousands  10 E6 = M mega = 1,000,000 = millions  10 E9 = G giga = 1,000,000,000  10 E12 = T tera = 1,000,000,000,000  10 E15 = P peta = 1,000,000,000,000,000  Скорость ветра 1 m/s = 3.6 km/h = 2.187 mph = 1.944 knots  1 knot = 1 nautical mile per hour = 0.5144 m/s = 1.852 km/h = 1.125 mph TOP 