Tabla De Unidades

TABLA 1. FACTORES DE CONVERSION Y CONSTANTES

Energía y potencia:
Btu = 0.252 kcal
Btu = 0.293 watt-h
Btu = 0.555 pcu (Unidad libra centígrado)
Btu = 778pie-lb
Btu/min = 0.0236 hp
Hp =42.4Btu/min
Hp = 33 000 pie-lb/min
Hp = 0.7457 kw
Hp-h = 2 543 Btu
KW = -1.3415 hp
Watt-h = 3.415 Btu

Flujo de fluidos :
Bbl/h = 0.0936 cfm
Bbl/h = 0.700gpm
Bbl/dia = 0.0292 gpm
Bbl/dia = 0.0039cfm
Cfm = 10.686 bbl/h
Gpm = 1.429 bbl/h
Gpm = 34.3 bbl/día
Gpm X s (gravedad especifica) = 500 X s lb/h

Coeficientes de transferencia de calor:
Btu/(h)(pies)(“F) = l.Opcu/(h)(pi@)(“C)Bttr/(h)(pies)(“F) = 4.88kg-cal/
Bh/(h)(pie*)(“F) = 0.00204watts/(Plgz)(“F~

Longitud, área y volumen:
Bbl = 42 gal
Bbl = 5.615 pie3
Cm = 0.3937plg
Pie3 = 0.1781 bbl
Pie3 = 7.48 gal
Pie3 = 0.0283m3
M3 = 6.290 bbl
M3 = 35.314pie3
Pies = 30.48 cm
Pies = 0.3048 m
Gal = 0.02381 bbl
Gal = 0.1337 pie3
Gal = 3.785 lt
Gal = 0.8327 gal (Imperial)
Plg = 2.54 cm
Litro = 0.2642 gal
Litro =1.0567 qt
M = 3.281 pie
Pie2 = 0.0929 m2
M2 = 10.76 pie2

Presión
Atm = 33.93 pies de agua a 60°F
Atm = 29.92 plg Hg a 32°F
Atm = 760 mm Hg a 32°F
Atm = 14.696 lb/plg2
Atm = 2 116.8lb/pie2
Atm= 1.033 kg/cm2
Pies de agua a 60°F = 0.4331 lb/plgz
Plg de agua a 60°F = 0.361 lb/plgz)
Kg/cmz = 14.223 lb/plgz.
Psi = 2.309 Pies de agua a 60°F

Temperatura :
Temperatura “C = 5/9( “F - 32)Temperatura “F = 9/5(“C )+ 32
Temperatura “F absoluta (“R) = “F + 460
Temperatura “C absoluta (OK) = “C + 273

Conductividad térmica:
Rtu, (h)(pie)(“F/pie) = 12Btu/(h)(pie’)(“F/Plg)Rtu/(h)(pie*)(“F/pie) = 1.49 kgcaU(h)(mW”C/m)
Rtu/(h)(pieZ)(“F/pie) = 0.0173Watts/(~mz)(“C~cm)

Viscosidad
Poise = 1 g/(cm)(seg)
Centipoise = 0.01 poise
Centipoise = 2.42 lb/(pie)(h)

Peso
Lb = 0.4536kg
Lb = 7 000 granos
Tonelada (corta aneta) = 2 000 Ib
Tonelada (larga) = 2 240 Ib
Tonelada (,mCtri&) = 2 205llb
Tonelada (m&rica) = 1000 kg

Constantes:
Aceleración de la gravedad =...