常见单位转换关系式.docx

1、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/urlfoot/second2, meter/second2, gal, galileo, inch/second2 1 m/s2 = 3.28084 ft/s2 = 100 cm/s2 = 39.37 inch per second squared (inch/s2) 1 ft/s2 = 0.3048 m/s2 = 30.48 cm/s2 1 g = 9.80665 m/s2 = 32.17405 ft/s2url=Area/ur

2、lacre, are, barn, sq.ft., sq.in., foot2, hectare, inch2, mile2, section, meter2, township, yard2, hectares 1 m2 = 1550 in2 = 10.764 ft2 = 1.1968 yd2 = 3.861x10-7 mile2 1 ft2 = 0.0929 m2 = 144 in2 = 0,1111 yd2 = 3.587x10-8 mile2 1 in2 = 6.452 cm2 = 6.452x10-4 m2 = 6.944x10-3 ft2 = 7.716x10-4 yd2 = 2.

3、491x10-10 mile2 1 yd2 = 0.8361 m2 = 1,296 in2 = 9 ft2 = 0.3228x10-6 mile2 1 mile2 = 2.590x106 m2 = 0.4015x1010 in2 = 2.788x107 ft2 = 3.098x106 yd2=640 Acres 1 acre = 1/640 mile2 = 0.404686 ha (Hectares) = 4,046.86 m2 =43,560 Sq.Ft. = 4840 Sq.Yds. 1 km2 = 102 ha2 = 106 m2 = 1010 cm2 = 1012 mm2 1 ha (

4、Hectare) = 104 m2 = 108 cm2 = 1010 mm2 = 2.471 Acres 1 cm2 = 10-4 m2 = 0.155 in2 1 mm2 = 1.55x10-3in2 1 township = 9.323957 107 m2 1 section = 2.589 106 m2url=Density/urlkg/cubic meter, gram/centimeter3, lmb/cubic inch, lbm/cubic foot, slug/cubic foot, kilogram/cubic meter, lbm/gallon (US liq) Densi

5、ty Water 1,000 kg/m3 = 62.43 Lbs./Cu.Ft = 8.33 Lbs./Gal. = 0.1337 Cu.Ft./Gal. 1 lb/ft3 = 16.018 kg/m3 = 0.016 g/cm3 = 0.00926 oz/in3 = 2.57 oz/gal (Imperial) = 2.139 oz/gal (U.S.) = 0.0005787 lb/in3 = 27 lb/yd3 = 0.161 lb/gal (Imperial) = 0.134 lb/gal (U.S) = 0.0121 ton/yd3 1 slug/ft3 = 515.379 kg/m

6、3 1 kg/l = 62.43 lb/ft3 1 kg/m3 = 0.001 g/cm3 = 0.0005780 oz/in3 = 0.16036 oz/gal (Imperial) = 0.1335 oz/gal (U.S.) = 0.0624 lb/ft3 = 0.000036127 lb/in3 = 1.6856 lb/yd3 = 0.010022 lb/gal (Imperial) = 0.008345 lb/gal (U.S) = 0.0007525 ton/yd3url=Energy/urlBritish Thermal Unit (Btu), calorie, joule, k

7、ilojoule, electron volt, erg, foot lbf, foot poundal, kilocalorie, kilowatt hour, watt hour, 1 J (Joule) = 0,1020 kpm = 2.778x10-7 kWh = 2.389x10-4 kcal = 0.7376 ft lbf = 1 (kg m2)/s2 = 1 watt second = 1 Nm = 1 ft lb = 9.478x10-4 Btu 1 kpm = 9.80665 J = 2.724x10-6 kWh = 2.342x10-3 kcal = 7.233 ft lb

8、f = 9.295x10-3 Btu 1 kWh = 3.6x106 J = 3.671x105 kpm = 859.9 kcal = 2.656x106 ft lbf = 3.412x103 Btu 1 kJ = 1 kNm = 1kWs = 103 J = 0.947813 Btu = 737.6 ft lbf = 0.23884 kcal 1 Btu (British thermal unit) = 1,055.06 J = 107.6 kpm = 2.931x10-4 kWh = 0.252 kcal = 778.16 ft lbf = 1.055x1010 ergs = 252 ca

9、l = 0.293 watt hour 1 cal = 4.186 J 1 kcal = 4186,8 J = 426,9 kp m = 1.163x10-3 kWh = 3.088 ft lbf = 3.9683 Btu = 1,000 cal 1 ft lbf (foot pound force) = 1.3558 J = 0.1383 kp m = 3.766x10-7 kWh = 3.238x10-4 kcal = 1.285x10-3 Btu 1 hp h (horse power hour) = 2.6846x106 J = 0.7457 kWh 1 erg = 1 (g cm2)

10、/s2 = 10-7 J 1 eV = 1.602x10-19 J 1 Q = 1018 Btu = 1.055x1021 J 1 Quad = 1015 Btu 1 kg m = 7.233 ft lb = 0.00929 Btu = 9.806 Jouleurl=Energy per unit mass/url 1 kJ/kg = 1 J/g = 0.4299 Btu/ lbm = 0.23884 kcal/kgurl=Flow/url - see Volume flowurl=Force/urldyne, kilogram force (kgf), kilopound force, ki

11、p, lbf (pound force), ounce force (avoirdupois), poundal, newton 1 N (Newton) = 0.1020 kp = 7.233 pdl = 7.233/32.174 lbf = 0.2248 lbf = 1 (kg m)/s2 = 105 dyn = 1/9.80665 kgf 1 lbf (Pound force) = 4.44822 N = 0.4536 kp = 32.17 pdl = 4.448x105 dyn 1 dyn = 1 (g cm)/s2 1 kg has a weight of 1 kp 1 kp (Ki

12、lopond) = 9.80665 N = 2.205 lbf = 70.93 pdl 1 pdl (Poundal) = 0.13826 N = 0.01409 kp = 0.03108 lbfurl=Heat flow rate/url 1 Btu/sec = 1,055.1 W 1 kW (kJ/s) = 102.0 kpm/s = 859.9 kcal/h = 3,413 Btu/h = 1.360 hk = 1.341 hp = 738 ft lb/s = 1,000 J/s = 3.6x106 J/h 1 kpm/s = 9.8067x10-3 kW = 8.432 kcal/h

13、= 32.47 Btu/h = 0.01333 hk = 0.01316 hp = 7.237 ft lb/s 1 kcal/h = 1.163x10-3 kW = 0.1186 kpm/s = 3.969 Btu/h = 1.582x10-3 hk = 1.560x10-3 hp = 0.8583 ft lb/s 1 Btu/h = 2.931x10-4 kW = 0.0299 kpm/s = 0.252 kcal/h = 3.986x10-4 hk = 3.939x10-4 hp = 0.2163 ft lb/s 1 kcal/h = 1.16x10-3 kW 1 hk (metric h

14、orse power) = 0.735499 kW = 75.00 kpm/s = 632.5 kcal/h = 2,510 Btu/h = 0.9863 hp = 542.8 ft lb/s 1 hp = 0.74570 kW = 76.04 kpm/s = 641.2 kcal/h = 2,545 Btu/h = 1.014 hk = 550.3 ft lb/s 1 ft lb/s = 1.35501 kW = 0.1382 kpm/s = 1.165 kcal/h = 4.625 Btu/h = 1.843x10-3 hk = 1.817x10-3 hpurl=Heat flux/url

15、 1 Btu/ft2 = 2.713 kcal/m2 = 2.043x104 J/m2K 1 Btu/ ft2 h = 3.1525 W/m2 1 Btu/ft2 oF = 4.88 kcal/m2K = 2.043x104 J/m2K 1 kcal/m2 = 0.369 Btu/ft2 1 kcal/m2K = 0.205 Btu/ft2oFurl=Heat generation per unit volume/url 1 Btu/ft3 = 8.9 kcal/m3 = 3.73x104 J/m3 1 Btu/ft3 h = 10.343 W/m3 1 kcal/m3 = 0.112 Btu

16、/ft3url=Heat generation per unit mass/url 1 Btu/lb = 0.556 kcal/kg = 2,326 J/kg 1 kcal/kg = 1.800 Btu/lburl=Heat transfer coefficient/url 1 Btu/ft2 h oF = 5.678 W/m2 K = 4.882 kcal/h m2 oC 1 W/m2K = 0.85984 kcal/h m2 oC = 0.1761 Btu/ ft2 h oF 1 kcal/h m2 oC = 1.163 W/m2K = 0.205 Btu/ ft2 h oFurl=Hyd

17、raulic Gradients/url 1 ftH2O/100 ft = 0.44 psi/100 ft = 9.8 kPa/100 m = 1000 mmH2O/100 m 1 psi/100 ft = 2.3 ftH2O/100 ft = 2288 mmH2O/100 ft = 22.46 kPa/100 murl=Length/urlfeet, meters, centimeters, kilometers, miles, furlongs, yards, micrometers, inches,angstrom, cubit, fathom, foot, hand, league,

18、light year, micron, mil, nautical mile, rod, 1 m (meter) = 3.2808 ft = 39.37 in = 1.0936 yd = 6.214x10-4 mile 1 km = 0.6214 mile = 3281 ft = 1094 yds 1 in (inch) = 25.4 mm = 2.54 cm = 0.0254 m = 0.08333 ft = 0.02778 yd = 1.578x10-5 mile 1 ft (foot) = 0.3048 m = 12 in = 0.3333 yd = 1.894x10-4 mile =

19、30.48 cm = 304.8 mm 1 mm = 10-3 m 1 cm = 10-2 m = 0.3937 in = 0.0328 ft 1 mm = 0.03937 in 1 (ngstrm) = 10-10 m 1 mile = 1.6093 km = 1,609.3 m = 63,346 in = 5,280 ft = 1,760 yd 1 mil (Norway and Sweden) = 10 kilometres 1 nm (nautical mile) = 1,852 metres = 1.151 mile = 6076.1 feet 1 yd (yard) = 0.914

20、4 m = 36 in = 3 ft = 5.682x10-4 mile 1 Furlong = 660 feet = 40 rods = 1/8 mile 1 rod = 5.5 yards 1 land league = 3 miles 1 Fathom = 6 feet = 1.828804 metersurl=Mass/url, weightpounds, kilograms, grams, ounces, grains, tons (long), tons (short), tons (metric), carat, grain, ounce mass, pound mass (lb

21、m), slug, tonne 1 kg = 1,000 g = 2.2046 lb = 6.8521x10-2 slug 1 lb = 16 oz = 0.4536 kg = 453.6 g = 7000 grains = 0.03108 slug 1 slug = 14.594 kg = 32.174 lbm 1 grain = 0.000143 lb = 0.0648 g 1 g = 15.43 grains = 0.0353 oz = 0.002205 lb 1 tonne = 103 kg = 106 g = 109 mg = 0.984 tons 1 qt = 0.9464 lit

22、ers 1 Ton = 2000 Lbs. = 907 kg 1 long ton = 2240 pounds 1 oz (ounce) = 28.35 g = 437.5 grains 1 troy pound = 12 troy ounces 1 scruple = 20 grains 1 dram = 3 scruples 1 apothecary ounce = 8 drams 1 apothecary pound = 12 apothecary ounces 1 pennyweight = 24 grains 1 Gal. H2O = 8.33 Lbs. H2O Density, S

23、pecific 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 = 1.26x10-4 kg/s 1 lb/s = 0.4536 kg/s 1 lb/min = 7.56x10-3 kg/s = 27.216 kg/s 1 kg/s = 3,600 kg/h = 132.28 lb/min 1 kg/h = 2.778

24、x10-4 kg/s = 3.67x10-2 lb/minMoment of Inertia 1 kg m2 = 10000 kg cm2 = 54675 ounce in2 = 3417.2 lb in2 = 23.73 lb ft2url=Power/urlhorsepower, kilowatt, watt,btu/second, calorie/second, foot lbf/second, kilocalorie/second 1 W = 1 kg m2/s3 = 1 Nm/s = 1 J/s 1 kW = 1,000 Watts = 3,412 Btu/h = 737.6/550

25、 British hp = 1.341 British hp = 103/9.80665 kgf m/s = 737.6 ft lbf/s = 103/(9.80665 75) metric hp 1 hp (English horse power) = 745.7 W = 0.746 kW = 550 ft lb/s = 2,545 Btu/h = 33.000 ft lb/m = 1.0139 metric horse power = 1.0 KVA 1 metric horse power = 736 W = 75 kg m/s = 0.986 English horse power 1

26、 refrigeration Ton = 12,000 Btu/h cooling = 3.516 kW = 3,025.9 k Calories/h 1 cooling tower Ton = 15,000 Btu/h = 3,782 k Calories/h 1 Therm = 100,000 Btu/h 1 ft lb/s = 1.3558 W 1 Btu/s = 1055.1 W 1 Btu/h = 1 Btuh = 0.293 W = 0.001 MBHurl=Power per unit area/url 1 W/m2 = 0.3170 Btu/(h ft2) = 0.85984

27、kcal/(h m2)url=Pressure/urlatmosphere, 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/meter2 Standard Atmospheric

28、Pressure 1 atm = 101.325 kN/m2 = 101.325 kPa = 14.7 psia = 0 psig = 29.92 in Hg = 760 torr = 33.95 Ft.H2O = 407.2 In.W.G (Water Gauge) = 2116.8 Lbs./Sq.Ft. 1 N/m2 = 1 Pa = 1.4504x10-4 lb/in2 = 1x10-5 bar = 4.03x10-3 in water = 0.336x10-3 ft water = 0.1024 mm water = 0.295x10-3 in mercury = 7.55x10-3

29、 mm mercury = 0.1024 kg/m2 = 0.993x10-5 atm 1 Pa = 10-6 N/mm2 = 10-5 bar = 0.1020 kp/m2 = 1.02x10-4 m H2O = 9.869x10-6 atm = 1.45x10-4 psi (lbf/in2) 1 N/mm2 = 106 Pa = 10 bar = 1.020x105 kp/m2 = 102.0 m H2O = 9.869 atm = 145.0 psi (lbf/in2) 1 mmHg = 1 torr = 0.01934 lb/in2 1 atm = 101,325 Pa (N/m2)

30、= 1.013x102 kN/m2 = 1.033x104 kp/m2 = 1.033 kp/cm2 = 1.013 bar = 14.696 psi (lb/in2) = 407.1 in H2O at 62 0F (16.7 oC) = 33.9 ft H2O at 62 0F (16.7 oC) = 10.33 m H2O at 62 0F (16.7 oC) = 29.92 in mercury at 62 0F (16.7 oC) = 760 mm mercury at 62 0F (16.7 oC) = 760 torr 1 bar = 105 Pa (N/m2) = 0.1 N/

31、mm2 = 10,197 kp/m2 = 10.20 m H2O = 0.9869 atm = 14.50 psi (lbf/in2) = 106 dyn/cm2 = 750 mmHg 1 kp/m2 = 9.81 Pa (N/m2) = 9.807x10-6 N/mm2 = 10-3 m H2O = 1 mm H2O = 0.9681x10-4 atm = 1.422x10-3 psi (lb/in2) = 0.0394 in H2O = 0.0736 mm mercury 1 psi (lb/in2) = 144 psf (lbf/ft2) = 6,894.8 Pa (N/m2) = 6.895x10-3 N/mm2 = 6.895x10-2 bar = 27.71 in H2O at 62oF (16.7oC) = 703.1 mm H2O at 6