常见单位转换关系式.docx
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常见单位转换关系式
常见单位转换关系式
发布:
2008-12-1410:
51|作者:
llljq|来源:
管道与设备技术网
[url=]Acceleration[/url]foot/second2,meter/second2,gal,galileo,inch/second2
1m/s2=ft/s2=100cm/s2=inchpersecondsquared（inch/s2）
1ft/s2=m/s2=cm/s2
1g=m/s2=ft/s2
[url=]Area[/url]acre,are,barn,.,.,foot2,hectare,inch2,mile2,section,meter2,township,yard2,hectares
1m2=1550in2=ft2=yd2=mile2
1ft2=m2=144in2=0,1111yd2=mile2
1in2=cm2=m2=ft2=yd2=mile2
；
1yd2=m2=1,296in2=9ft2=mile2
1mile2=m2=in2=ft2=yd2=640Acres
1acre=1/640mile2=ha（Hectares）=4,m2=43,560.=4840.
1km2=102ha2=106m2=1010cm2=1012mm2
1ha（Hectare）=104m2=108cm2=1010mm2=Acres
1cm2=10-4m2=in2
1mm2=
1township=107m2
1section=106m2
[url=]Density[/url]kg/cubicmeter,gram/centimeter3,lmb/cubicinch,lbm/cubicfoot,slug/cubicfoot,kilogram/cubicmeter,lbm/gallon（USliq）
￥
DensityWater1,000kg/m3=Lbs./=Lbs./Gal.=./Gal.
1lb/ft3=kg/m3=g/cm3=oz/in3=oz/gal（Imperial）=oz/gal（U.S.）=lb/in3=27lb/yd3=lb/gal（Imperial）=lb/gal=ton/yd3
1slug/ft3=kg/m3
1kg/l=lb/ft3
1kg/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]BritishThermalUnit（Btu）,calorie,joule,kilojoule,electronvolt,erg,footlbf,footpoundal,kilocalorie,kilowatthour,watthour,
1J（Joule）=0,1020kpm=kWh=kcal=ftlbf=1（kgm2）/s2=1wattsecond=1Nm=1ftlb=Btu
1kpm=J=kWh=kcal=ftlbf=Btu
1kWh=J=kpm=kcal=ftlbf=Btu
1kJ=1kNm=1kWs=103J=Btu=ftlbf=kcal
、
1Btu（Britishthermalunit）=1,J=kpm=kWh=kcal=ftlbf=ergs=252cal=watthour
1cal=J
1kcal=4186,8J=426,9kpm=kWh=ftlbf=Btu=1,000cal
1ftlbf（footpoundforce）=J=kpm=kWh=kcal=Btu
1hph（horsepowerhour）=J=kWh
1erg=1（gcm2）/s2=10-7J
1eV=J
1Q=1018Btu=J
1Quad=1015Btu
1kgm=ftlb=Btu=Joule
|
[url=]Energyperunitmass[/url]
1kJ/kg=1J/g=Btu/lbm=kcal/kg
[url=]Flow[/url]-seeVolumeflow[url=]Force[/url]dyne,kilogramforce（kgf）,kilopoundforce,kip,lbf（poundforce）,ounceforce（avoirdupois）,poundal,newton
1N（Newton）=kp=pdl=lbf=lbf=1（kgm）/s2=105dyn=1/kgf
1lbf（Poundforce）=N=kp=pdl=dyn
1dyn=1（gcm）/s2
1kghasaweightof1kp
1kp（Kilopond）=N=lbf=pdl
1pdl（Poundal）=N=kp=lbf
[url=]Heatflowrate[/url]
-
1Btu/sec=1,W
1kW（kJ/s）=kpm/s=kcal/h=3,413Btu/h=hk=hp=738ftlb/s=1,000J/s=J/h
1kpm/s=kW=kcal/h=Btu/h=hk=hp=ftlb/s
1kcal/h=kW=kpm/s=Btu/h=hk=hp=ftlb/s
1Btu/h=kW=kpm/s=kcal/h=hk=hp=ftlb/s
1kcal/h=kW
1hk（metrichorsepower）=kW=kpm/s=kcal/h=2,510Btu/h=hp=ftlb/s
1hp=kW=kpm/s=kcal/h=2,545Btu/h=hk=ftlb/s
1ftlb/s=kW=kpm/s=kcal/h=Btu/h=hk=hp
[url=]Heatflux[/url]
$
1Btu/ft2=kcal/m2=J/m2K
1Btu/ft2h=W/m2
1Btu/ft2oF=kcal/m2K=J/m2K
1kcal/m2=Btu/ft2
1kcal/m2K=Btu/ft2oF
[url=]Heatgenerationperunitvolume[/url]
1Btu/ft3=kcal/m3=J/m3
1Btu/ft3h=W/m3
1kcal/m3=Btu/ft3
[url=]Heatgenerationperunitmass[/url]
?
1Btu/lb=kcal/kg=2,326J/kg
1kcal/kg=Btu/lb
[url=]Heattransfercoefficient[/url]
1Btu/ft2hoF=W/m2K=kcal/hm2oC
1W/m2K=kcal/hm2oC=Btu/ft2hoF
1kcal/hm2oC=W/m2K=Btu/ft2hoF
[url=]HydraulicGradients[/url]
1ftH2O/100ft=psi/100ft=kPa/100m=1000mmH2O/100m
1psi/100ft=ftH2O/100ft=2288mmH2O/100ft=kPa/100m
[url=]Length[/url]feet,meters,centimeters,kilometers,miles,furlongs,yards,micrometers,inches,angstrom,cubit,fathom,foot,hand,league,lightyear,micron,mil,nauticalmile,rod,
.
1m（meter）=ft=in=yd=mile
1km=mile=3281ft=1094yds
1in（inch）=mm=cm=m=ft=yd=mile
1ft（foot）=m=12in=yd=mile=cm=mm
1mm=10-3m
1cm=10-2m=in=ft
1mm=in
1Ã…（Ã…ngström）=10-10m
1mile=km=1,m=63,346in=5,280ft=1,760yd
1mil（NorwayandSweden）=10kilometres
~
1nm（nauticalmile）=1,852metres=mile=feet
1yd（yard）=m=36in=3ft=mile
1Furlong=660feet=40rods=1/8mile
1rod=yards
1landleague=3miles
1Fathom=6feet=meters
[url=]Mass[/url],weightpounds,kilograms,grams,ounces,grains,tons（long）,tons（short）,tons（metric）,carat,grain,ouncemass,poundmass（lbm）,slug,tonne
1kg=1,000g=lb=slug
1lb=16oz=kg=g=7000grains=slug
1slug=kg=lbm
·
1grain=lb=g
1g=grains=oz=lb
1tonne=103kg=106g=109mg=tons
1qt=liters
1Ton=2000Lbs.=907kg
1longton=2240pounds
1oz（ounce）=g=grains
1troypound=12troyounces
1scruple=20grains
1dram=3scruples
*
1apothecaryounce=8drams
1apothecarypound=12apothecaryounces
1pennyweight=24grains
1Gal.H2O=Lbs.H2O
Density,SpecificWeightandSpecificGravity-Anintroductionanddefinitionofdensity,specificweightandspecificgravity.Formulaswithexamples.
[url=]Massflowrate[/url]
1lb/h=kg/s
1lb/s=kg/s
1lb/min=kg/s=kg/s
1kg/s=3,600kg/h=lb/min
;
1kg/h=kg/s=lb/min
MomentofInertia
1kgm2=10000kgcm2=54675ouncein2=lbin2=lbft2
[url=]Power[/url]horsepower,kilowatt,watt,btu/second,calorie/second,footlbf/second,kilocalorie/second
1W=1kgm2/s3=1Nm/s=1J/s
1kW=1,000Watts=3,412Btu/h=550Britishhp=Britishhp=103/kgfm/s=ftlbf/s=103/75）metrichp
1hp（Englishhorsepower）=W=kW=550ftlb/s=2,545Btu/h=ftlb/m=metrichorsepower~=KVA
1metrichorsepower=736W=75kgm/s=Englishhorsepower
1refrigerationTon=12,000Btu/hcooling=kW=3,kCalories/h
1coolingtowerTon=15,000Btu/h=3,782kCalories/h
、
1Therm=100,000Btu/h
1ftlb/s=W
1Btu/s=W
1Btu/h=1Btuh=W=MBH
[url=]Powerperunitarea[/url]
1W/m2=Btu/（hft2）=kcal/（hm2）
[url=]Pressure[/url]atmosphere,centimetersofmercury,footofwater,bar,barye,centimeterofwater,dyne/centimeter2,inchofmercury,inchofwater,kgf/centimeter2,kgf/meter2,lbf/foot2,lbf/inch2（psi）,millibar,millimeterofmercury,pascal,torr,newton/meter2
StandardAtmosphericPressure1atm=kN/m2=kPa=psia=0psig=inHg=760torr==（WaterGauge）=Lbs./.
1N/m2=1Pa=lb/in2=1x10-5bar=inwater=ftwater=mmwater=inmercury=mmmercury=kg/m2=atm
1Pa=10-6N/mm2=10-5bar=kp/m2=mH2O=atm=psi（lbf/in2）
）
1N/mm2=106Pa=10bar=kp/m2=mH2O=atm=psi（lbf/in2）
1mmHg=1torr=lb/in2
1atm=101,325Pa（N/m2）=kN/m2=kp/m2=kp/cm2=bar=psi（lb/in2）=inH2Oat620FoC）=ftH2Oat620FoC）=mH2Oat620FoC）=inmercuryat620FoC）=760mmmercuryat620FoC）=760torr
1bar=105Pa（N/m2）=N/mm2=10,197kp/m2=mH2O=atm=psi（lbf/in2）=106dyn/cm2=750mmHg
1kp/m2=Pa（N/m2）=N/mm2=10-3mH2O=1mmH2O=atm=psi（lb/in2）=inH2O=mmmercury
1psi（lb/in2）=144psf（lbf/ft2）=6,Pa（N/m2）=N/mm2=bar=inH2Oat62oF=mmH2Oat62oF=inmercuryat62oF=mmmercuryat62oF=kg/m2=atm=Ft.H2O=16ounces
1psf（lbf/ft2）=N/m2（Pa）=lbf/in2（psi）
1dyn/cm2=lbf/in2
1inmercury（Hg）=3,N/m2=lb/in2=inwater
1Ounce=
%
1=psi=Lbs./.
1inwater=N/m2=lb/in2=kg/m2=inmercury
1mH2O=Pa=N/mm2=bar=1,000kp/m2=atm=psi（lbf/in2）
1mmwater=Pa（N/m2）=1kg/m2=mmmercury=atm
1mmmercury=lb/in2=133N/m2=mmwater
[url=]Rotation[/url]revolutions,
1r/min（rpm）=r/s=rad/s
1r/s=60r/min=rad/s
1rad/s=r/min（rpm）=r/s（rps）
[url=]Specificenergy[/url],enthalpy,entropy
:
1Btu/lbm=2,J/kg=kcal/kg=ftlbf/lbm=10-4hphr/lbm=lbf/in2/lbm/ft3=kpm/g=10-4kcal/g=kJ/kg
1J/kg=Btu/lbm=kcal/kg
1kcal/kg=Btu/lbm=4,187J/kg
[url=]Specificheatcapacity[/url]
1J/（kgK）=kcal/（kgoC）=Btu/（lbmoF）
1kJ/（kgK）=kcal/（kgoC）=Btu/（lbmoF）
1Btu/（lbmoF）=4,J/（kgK）=1kcal/（kgoC）
1kcal/（kgoC）=4,J/（kgK）=1Btu/（lbmoF）
[url=]SpecificVolume[/url]
1m3/kg=ft3/lbm=27680in3/lbm=USgal/lbm=1000liter/kg
？
1liter/kg=ft3/lbm=in3/lbm=USgal/lbm=m3/kg
1ft3/lbm=1728in3/lbm=USgal/lbm=liter/kg=m3/kg
1in3/lbm=ft3/lbm=USgal/lbm=liter/kg=m3/kg
1USgal/lbm=ft3/lbm=231in3/lbm=liter/kg=m3/kg
[url=]Temperature[/url]celsius,rankine,kelvin,centigrade,fahrenheit,
1oC=oF
1oF=oC
0oCcorrespondsto32oF,KandR
T（oR）=（9/5）T（K）
T（oF）=[T（oC）]（9/5）+32
?
T（oF）=[T（K）-]（9/5）+32
T（oC）=5/9[T（oF）-32]
[url=]Thermalconductivity[/url]
1W/（mK）=kcal/（hmoC）=Btu/（fthoF）
1Btu/（fthoF）=W/（mK）=kcal/（hmoC）
1kcal/（hmoC）=W/（mK）=Btu/（fthoF）
[url=]Thermaldiffusivity[/url]
1ft2/s=m2/s
1ft2/h=m2/s
[url=]Thermalresistance[/url]
\
1（hoF）/Btu=K/W
[url=]Time[/url]year,month,day,hour,minute,second,millisecond
1h=3,600s=60min
1ms（millisecond）=10-3s
1μs（microsecond）=10-6s
1ns（nanosecond）=10-9s
[url=]Torque,Moment[/url]foot-poundtorque,newton-meter
1ftlb=Nm
[url=]Velocity[/url],speedfoot/second,inch/second,meter/second,kilometer/hour,knot,mile/hour,nauticalmileperhour
1ft/s=m/s
】
1ft/min=m/s=km/h=mph
1mph=m/s=km/h=88ft/min=5280ft/hr=Ft./sec.=knots
1m
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