2011年各种不常见的单位换算方法与公式及单位动力加速换算(国外英语资料).docVIP

2011年各种不常见的单位换算方法与公式及单位动力加速换算(国外英语资料) A unit area of length 1 in = 25.4 mm, 1 in2 = 6.45 cm2 1 ft = 0.3048 m, 1 ft2 = 0.093 M2 1 micron = 0.001 mm Volume unit 1 litre = 0.001 m3, 1 cu.ft. = 0.0283 M3 1 cu.in. = 16.39 cm3 1 fluid oz. (IMP) = 28.41 mL 1 fluid oz. (US) = 29.57 mL 1 Gal (IMP) = 4.546 L 1 Gal (US) = 3.79 L Temperature unit (F-32) X5/9= DEG C = K-273.15 = C. Work and energy unit 1 Nm = 1 J, 1 KGM = 9.807 J 1 kW/hr = 3.6 MJ, 1 lbft = 1.356 J Power unit 1 Nm/sec = 1 W, 1 lbft/sec = 1.356 W 1 kgm/sec = 9.807 W, 1 Joule/sec = 1 W 1 H.P. (IMP) = 745.7 W Mass unit 1 lb = 453.6 g, 1 tonne = 1000 kg 1 ton (IMP) = 1016 kg, 1 ton (US) = 907.2 kg Flow calculation formula Q = Cv 984 = Kv value X value X 1100 Cv = So / 18 Force unit 1 KGF = 9.81 N, 1 LBF = 4.45 N 1 KP (kilopound) = 9.81 N 1 poundal = 138.3 mN 1 ton force = 9.964 kM Torque unit 1 KGM = 9.807 Nm, 1 ft., poundal = 0.0421 Nm 1 in LB = 0.113 Nm, 1 ft LB = 1.356 Nm Pressure unit 1 psi = 6.89 kPa, 1 kgf/cm2 = 98.07 kPa 1 bar = 100 kPa, 1 bar = 14.5 PSI 1 mm mercury = 133.3 Pa 1 in mercury = 3.39 kPa 1 Torr = 133.3 Pa, 1 ft, water = 0.0298 bar 1, bar = 3.33, FT, water 1, atmosphere = 101.3 kPa 1 cm water = 97.89 Pa, 1 in water = 248.64 Pa Conversion table 1psi=6.895kPa=0.07kg/cm2=0.06895bar=0.0703atm 1standard atmosphere=14.7psi=101.3kPa=1.01325bar 1kgf/cm2 = 98.07kPa=14.22psi = 28.96ins mercury 1m3 = 1000000cm3 1CU ft/min = 28.3 l/min 1Pa = 1N/m2 1ft LB = 0.13826kgm = 1.356 Nm 1 L = 103cm3 = 1.7598pint = 106mm3 1 tonne = 1000, kg = 0.984, ton = 2204.6 LB flow Cv = water flow (US, gal/min) at 60 degrees F, flowing through the pressure difference of The flow rating of the valve at 1 psi. Kv = water flow (L/min), at 20 degrees, flows through a pressure difference of 1 Flow rating obtained by valves of kgf/cm2. So = effective cross sectional area (mm2) Q = flow (Ng/min) S.T.P. = standard temperature and pressure (0 DEG C and 101.3kPa absolute pressure) N.T.P. = normal temperature and pressure (20 DEG C and 101.