常见单位转换关系式

常见单位转换关系式发布: 2008-12-14 10:51 | 作者: llljq | 来源: 管道与设备技术网[url=]Acceleration[/url]foot/second2, meter/second2, gal, galileo, inch/second21 m/s2 = ft/s2 = 100 cm/s2 = inch per second squared (inch/s2)1 ft/s2 = m/s2 = cm/s21 g = m/s2 = ft/s2[url=]Area[/url]acre, are, barn, ., ., foot2, hectare, inch2, mile2, section, meter2, township, yard2, hectares1 m2 = 1550 in2 = ft2 = yd2 = mile21 ft2 = m2 = 144 in2 = 0,1111 yd2 = mile21 in2 = cm2 = m2 = ft2 = yd2 = mile21 yd2 = m2 = 1,296 in2 = 9 ft2 = mile21 mile2 = m2 = in2 = ft2 = yd2=640 Acres1 acre = 1/640 mile2 = ha (Hectares) = 4, m2 =43,560 . = 4840 .1 km2 = 102 ha2 = 106 m2 = 1010 cm2 = 1012 mm21 ha (Hectare) = 104 m2 = 108 cm2 = 1010 mm2 = Acres1 cm2 = 10-4 m2 = in21 mm2 =1 township = 107 m21 section = 106 m2[url=]Density[/url]kg/cubic meter, gram/centimeter3, lmb/cubic inch, lbm/cubic foot, slug/cubic foot, kilogram/cubic meter, lbm/gallon (US liq)Density Water 1,000 kg/m3 = Lbs./ = Lbs./Gal. = ./Gal.1 lb/ft3 = kg/m3 = g/cm3 = oz/in3 = oz/gal (Imperial) = oz/gal (U.S.) = lb/in3= 27 lb/yd3 = lb/gal (Imperial) = lb/gal = ton/yd31 slug/ft3 = kg/m31 kg/l = lb/ft31 kg/m3 = g/cm3 = oz/in3 = oz/gal (Imperial) = oz/gal (U.S.) = lb/ft3 = lb/in3= lb/yd3 = lb/gal (Imperial) = lb/gal = ton/yd3[url=]Energy[/url]British Thermal Unit (Btu), calorie, joule, kilojoule, electron volt, erg, foot lbf, foot poundal, kilocalorie, kilowatt hour, watt hour,1 J (Joule) = 0,1020 kpm = kWh = kcal = ft lbf = 1 (kg m2)/s2 = 1 watt second = 1Nm = 1 ft lb = Btu1 kpm = J = kWh = kcal = ft lbf = Btu1 kWh = J = kpm = kcal = ft lbf = Btu1 kJ = 1 kNm = 1kWs = 103 J = Btu = ft lbf = kcal1 Btu (British thermal unit) = 1, J = kpm = kWh = kcal = ft lbf = ergs = 252 cal =watt hour1 cal = J1 kcal = 4186,8 J = 426,9 kp m = kWh = ft lbf = Btu = 1,000 cal1 ft lbf (foot pound force) = J = kp m = kWh = kcal = Btu1 hp h (horse power hour) = J = kWh1 erg = 1 (g cm2)/s2 = 10-7 J1 eV = J1 Q = 1018 Btu = J1 Quad = 1015 Btu1 kg m = ft lb = Btu = Joule[url=]Energy per unit mass[/url]1 kJ/kg = 1 J/g = Btu/ lbm = kcal/kg[url=]Flow[/url] - see Volume flow[url=]Force[/url]dyne, kilogram force (kgf), kilopound force, kip, lbf (pound force), ounce force (avoirdupois), poundal, newton1 N (Newton) = kp = pdl = lbf = lbf = 1 (kg m)/s2 = 105 dyn = 1/ kgf1 lbf (Pound force) = N = kp = pdl = dyn1 dyn = 1 (g cm)/s21 kg has a weight of 1 kp1 kp (Kilopond) = N = lbf = pdl1 pdl (Poundal) = N = kp = lbf[url=]Heat flow rate[/url]1 Btu/sec = 1, W1 kW (kJ/s) = kpm/s = kcal/h = 3,413 Btu/h = hk = hp = 738 ft lb/s = 1,000 J/s =J/h1 kpm/s = kW = kcal/h = Btu/h = hk = hp = ft lb/s1 kcal/h = kW = kpm/s = Btu/h = hk = hp = ft lb/s1 Btu/h = kW = kpm/s = kcal/h = hk = hp = ft lb/s1 kcal/h = kW1 hk (metric horse power) = kW = kpm/s = kcal/h = 2,510 Btu/h = hp = ft lb/s1 hp = kW = kpm/s = kcal/h = 2,545 Btu/h = hk = ft lb/s1 ft lb/s = kW = kpm/s = kcal/h = Btu/h = hk = hp[url=]Heat flux[/url]1 Btu/ft2 = kcal/m2 = J/m2K1 Btu/ ft2 h = W/m21 Btu/ft2 oF = kcal/m2K = J/m2K1 kcal/m2 = Btu/ft21 kcal/m2K = Btu/ft2oF[url=]Heat generation per unit volume[/url]1 Btu/ft3 = kcal/m3 = J/m31 Btu/ft3 h = W/m31 kcal/m3 = Btu/ft3[url=]Heat generation per unit mass[/url]1 Btu/lb = kcal/kg = 2,326 J/kg1 kcal/kg = Btu/lb[url=]Heat transfer coefficient[/url]1 Btu/ft2 h oF = W/m2 K = kcal/h m2 oC1 W/m2K = kcal/h m2 oC = Btu/ ft2 h oF1 kcal/h m2 oC = W/m2K = Btu/ ft2 h oF[url=]Hydraulic Gradients[/url]1 ftH2O/100 ft = psi/100 ft = kPa/100 m = 1000 mmH2O/100 m1 psi/100 ft = ftH2O/100 ft = 2288 mmH2O/100 ft = kPa/100 m[url=]Length[/url]feet, meters, centimeters, kilometers, miles, furlongs, yards, micrometers, inches,angstrom, cubit, fathom, foot, hand, league, light year, micron, mil, nautical mile, rod,1 m (meter) = ft = in = yd = mile1 km = mile = 3281 ft = 1094 yds1 in (inch) = mm = cm = m = ft = yd = mile1 ft (foot) = m = 12 in = yd = mile = cm = mm1 mm = 10-3 m1 cm = 10-2 m = in = ft1 mm = in1 … (…ngstrm) = 10-10 m1 mile = km = 1, m = 63,346 in = 5,280 ft = 1,760 yd1 mil (Norway and Sweden) = 10 kilometres1 nm (nautical mile) = 1,852 metres = mile = feet1 yd (yard) = m = 36 in = 3 ft = mile1 Furlong = 660 feet = 40 rods = 1/8 mile1 rod = yards1 land league = 3 miles1 Fathom = 6 feet = meters[url=]Mass[/url], weightpounds, kilograms, grams, ounces, grains, tons (long), tons (short), tons (metric), carat, grain, ounce mass, pound mass (lbm), slug, tonne1 kg = 1,000 g = lb = slug1 lb = 16 oz = kg = g = 7000 grains = slug1 slug = kg = lbm1 grain = lb = g1 g = grains = oz = lb1 tonne = 103 kg = 106 g = 109 mg = tons1 qt = liters1 Ton = 2000 Lbs. = 907 kg1 long ton = 2240 pounds1 oz (ounce) = g = grains1 troy pound = 12 troy ounces1 scruple = 20 grains1 dram = 3 scruples1 apothecary ounce = 8 drams1 apothecary pound = 12 apothecary ounces1 pennyweight = 24 grains1 Gal. H2O = Lbs. H2ODensity, Specific Weight and Specific Gravity - An introduction and definition of density, specific weight and specific gravity. Formulas with examples.[url=]Mass flow rate[/url]1 lb/h = kg/s1 lb/s = kg/s1 lb/min = kg/s = kg/s1 kg/s = 3,600 kg/h = lb/min1 kg/h = kg/s = lb/minMoment of Inertia1 kg m2 = 10000 kg cm2 = 54675 ounce in2 = lb in2 = lb ft2[url=]Power[/url]horsepower, kilowatt, watt,btu/second, calorie/second, foot lbf/second, kilocalorie/second1 W = 1 kg m2/s3 = 1 Nm/s = 1 J/s1 kW = 1,000 Watts = 3,412 Btu/h = 550 British hp = British hp = 103/ kgf m/s = ftlbf/s = 103/ 75) metric hp1 hp (English horse power) = W = kW = 550 ft lb/s = 2,545 Btu/h = ft lb/m =metric horse power ~= KVA1 metric horse power = 736 W = 75 kg m/s = English horse power1 refrigeration Ton = 12,000 Btu/h cooling = kW = 3, k Calories/h1 cooling tower Ton = 15,000 Btu/h = 3,782 k Calories/h1 Therm = 100,000 Btu/h1 ft lb/s = W1 Btu/s = W1 Btu/h = 1 Btuh = W = MBH[url=]Power per unit area[/url]1 W/m2 = Btu/(h ft2) = kcal/(h m2)[url=]Pressure[/url]atmosphere, centimeters of mercury, foot of water, bar, barye, centimeter of water, dyne/centimeter2, inch of mercury, inch of water, kgf/centimeter2, kgf/meter2, lbf/foot2, lbf/inch2 (psi), millibar, millimeter of mercury, pascal, torr, newton/meter2Standard Atmospheric Pressure 1 atm = kN/m2 = kPa = psia = 0 psig = in Hg =760 torr = = (Water Gauge) = Lbs./.1 N/m2 = 1 Pa = lb/in2 = 1x10-5 bar = in water = ft water = mm water = inmercury = mm mercury = kg/m2 = atm1 Pa = 10-6 N/mm2 = 10-5 bar = kp/m2 = m H2O = atm = psi (lbf/in2)1 N/mm2 = 106 Pa = 10 bar = kp/m2 = m H2O = atm = psi (lbf/in2)1 mmHg = 1 torr = lb/in21 atm = 101,325 Pa (N/m2) = kN/m2 = kp/m2 = kp/cm2 = bar = psi (lb/in2) =in H2O at 62 0F oC) = ft H2O at 62 0F oC) = m H2O at 62 0F oC) = in mercury at 62 0F oC) = 760 mm mercury at 62 0F oC) = 760 torr1 bar = 105 Pa (N/m2) = N/mm2 = 10,197 kp/m2 = m H2O = atm = psi (lbf/in2) =106 dyn/cm2 = 750 mmHg1 kp/m2 = Pa (N/m2) = N/mm2 = 10-3 m H2O = 1 mm H2O = atm = psi (lb/in2) =in H2O = mm mercury1 psi (lb/in2) = 144 psf (lbf/ft2) = 6, Pa (N/m2) = N/mm2 = bar = in H2O at 62oF =mm H2O at 62oF = in mercury at 62oF = mm mercury at 62oF = kg/m2 =atm = Ft. H2O = 16 ounces1 psf (lbf/ft2) = N/m2 (Pa) = lbf/in2 (psi)1 dyn/cm2 = lbf/in21 in mercury (Hg) = 3, N/m2= lb/in2 = in water1 Ounce =1 = psi = Lbs./.1 in water = N/m2= lb/in2 = kg/m2 = in mercury1 m H2O = Pa = N/mm2 = bar = 1,000 kp/m2 = atm = psi (lbf/in2)1 mm water = Pa (N/m2) = 1 kg/m2 = mm mercury = atm1 mm mercury = lb/in2 = 133 N/m2 = mm water[url=]Rotation[/url]revolutions,1 r/min (rpm) = r/s = rad/s1 r/s = 60 r/min = rad/s1 rad/s = r/min (rpm) = r/s (rps)[url=]Specific energy[/url], enthalpy, entropy1 Btu/lbm = 2, J/kg = kcal/kg = ft lbf / lbm = 10-4 hp hr / lbm = lbf/in2 / lbm/ft3 =kp m / g = 10-4 kcal/g = kJ/kg1 J/kg = Btu/lbm = kcal/kg1 kcal/kg = Btu/lbm = 4,187 J/kg[url=]Specific heat capacity[/url]1 J/(kg K) = kcal/(kg oC) = Btu/(lbm oF)1 kJ/(kg K) = kcal/(kg oC) = Btu/(lbm oF)1 Btu/(lbm oF) = 4, J/ (kg K) = 1 kcal/(kg oC)1 kcal/(kg oC) = 4, J/ (kg K) = 1 Btu/(lbm oF)[url=]Specific Volume[/url]1 m3/kg = ft3/lbm = 27680 in3/lbm = US gal/lbm = 1000 liter/kg1 liter/kg = ft3/lbm = in3/lbm = US gal/lbm = m3/kg1 ft3/lbm = 1728 in3/lbm = US gal/lbm = liter/kg = m3/kg1 in3/lbm = ft3/lbm = US gal/lbm = liter/kg = m3/kg1 US gal/lbm = ft3/lbm = 231 in3/lbm = liter/kg = m3/kg[url=]Temperature[/url]celsius, rankine, kelvin, centigrade, fahrenheit,1 oC = oF1 oF = oC0 oC corresponds to 32 oF, K and RT(oR) = (9/5)T(K)T(oF) = [T(oC)](9/5) + 32T(oF) = [T(K) - ](9/5) + 32T(oC) = 5/9[T(oF) - 32][url=]Thermal conductivity[/url]1 W/(m K) = kcal/(h m oC) = Btu/(ft h oF)1 Btu/(ft h oF) = W/(m K) = kcal/(h m oC)1 kcal/(h m oC) = W/(m K) = Btu/(ft h oF)[url=]Thermal diffusivity[/url]1 ft2 /s = m2/s1 ft2 /h = m2/s[url=]Thermal resistance[/url]1 (h oF)/Btu = K/W[url=]Time[/url]year, month, day, hour, minute, second, millisecond1 h = 3,600 s = 60 min1 ms (millisecond) = 10-3 s1 μs (microsecond) = 10-6 s1 ns (nanosecond) = 10-9 s[url=]Torque, Moment[/url]foot-pound torque, newton-meter1 ft lb = Nm[url=]Velocity[/url], speedfoot/second, inch/second, meter/second, kilometer/hour, knot, mile/hour,nautical mile per hour1 ft/s = m/s1 ft/min = m/s = km/h = mph1 mph = m/s = km/h = 88 ft/min = 5280 ft/hr = Ft./sec. = knots1 m/s = km/h = ft/min = mph1 km/h = m/s = ft/min = mph = knot1 knot (nautical mile per hour)= m/s = kilometers per hour = miles per hour= 1nautical miles per hour1 League = Miles[url=]Viscosity dynamic[/url]1 lb/(ft s) = Pa s = P = 1,488 cP = kp s/m21 cP (Centipoise) = 10-3 Pa s = P = kp s/m2 = lb/(ft s) = (N s)/m21 kg/(m s ) = 1 (N s)/m2 = lbm/(ft s) = 10 Poise1 P (Poise) = Pa s = 100 cP = kp s/m2 = lb/(ft s) = kg/ms1 Pa s (N s/m2) = 10 P (Poise) = 103 cP = kp s/m2 = lb/(ft s)1 kp s/m2 = Pa s = P = 9,807 cP = lb/(ft s)1 reyns = 1 1bf s/in2 = Pa sDynamic, Absolute and Kinematic Viscosity - An introduction to dynamic, absolute and kinematic viscosity and how to convert between CentiStokes (cSt), CentiPoises (cP),Saybolt Universal Seconds (SSU) and degree Engler.[url=]Viscosity kinematic[/url]1 ft2/s = m2/s1 ft2/ h = s1 St (Stokes) = 1x10-4 m2/s = 100 cSt = ft2/s1 m2/s = 104 St = 106 cSt = ft2/s= 38750 ft2/h1 cSt (Centistokes) = 10-6 m2/s = St = ft2/s[url=]Volume[/url]barrel, gallon, cubic centimeter (cm3), cubic feet (foot3), cubic inch (inch3), cubic meter (meter3), cubic yard (yard3), quarts, liters, acre foot, board foot, bushel, cord, cup, dram, fluid ounce, peck, pint, quart, tablespoon, teaspoon,1 ft3 = m3= dm3 = yd3 = Imp. gal (UK) = gal (US) = 1,728 .1 in3 = m3 = dm3 (liter) = cm3 = 16390 mm3 = ft31 Gallon (U.S.) = m3 = dm3 (liter) = ft3 = yd3 = Imp. gal (UK) = 4 Quarts = 8Pints1 Imp. gal (UK) = m3 = dm3 = ft3 = yd3 = gal (US)1 dm3 (Liter) = 10-3 m3 = ft3 = yd3 = Imp gal (UK) = Gallons (US) = Quarts =Pints1 yd3 = m3 = dm3 = 27 ft3 = Imp. gal (UK) = gal (US) = 46,656 . = 1616 Pints =Quarts = Liters1 pint (pt) = dm3 (liter) = 16 fl. oz. (fluid ounce) = in31 km3 = 109 m3 = 1012 dm3 (liter) = 1015 cm3 = 1018 mm31 cm3 = in31 m3 = 103 dm3 (liter) = ft3 = yd3 = Imp. gal (UK) = gal (US) = 61,023 . =1 Hogshead = 63 Gallon =1 Barrel liquid = Gallons liquid1 Barrel beer = Gallons beer1 Barrel oil (petroleum) = 42 Gallons oil1 Bushel = . = 32 Quarts (Dry) = 64 Pints (dry) = 4 Pecks1 quart (qt) =2 pints = in3 = 1/8 dry quarts1 fluid ounce (fl. oz.) =2 tablespoons = in3 = milliliters1 cord = 128 ft31 peck = 8 dry quarts1 cup = 8 . (fluid ounce)one board foot = piece of lumber 1 foot wide x 1 foot long x 1 inch thick[url=]Volume flow[/url]1 dm3/s (kg/s water) = Imp. gal (UK)/min1 m3/s = 3,600 m3/h = 1,000 dm3(liter)/s = ft3/s = 2, ft3/min = 13,200 (UK)/min =15,852 gal (US)/min1 m3/h = m3/s = dm3(litre)/s = ft3/s = ft3/min (cfm) = (UK)/min = gal(US)/min1 m3/h = 103 dm3(litre)/h = dm3(litre)/min = dm3(litre)/s1 ft3/min = m3/h = l/s = Min.1 dm3(litre)/s = 10-3 m3/s = m3/h = ft3/s = ft3/min (cfm) = (UK)/min = gal(US)/min = 792 Imp. gal (UK)/h1 dm3(litre)/s = 60 litre/min = 3,600 litre/h1 ft3/s = m3/s = m3/h = dm3(litre)/s = 60 ft3/min = (UK)/min = gal (US)/min1 (UK)/min = m3/s = m3/h = dm3(litre)/s = ft3/s = ft3/min = 1,201 gal(US)/min1 gal (US)/min = m3/s = m3/h = dm3(litre)/s = ft3/s = ft3/min = Imperial gal(UK)/min。