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CONVERSIÓN
Area
1 ft
2
= 0.0929 in
2
1 in
2
m
2
1 m
2
= 10.764 ft
2
1 m
2
= 1550.0 in
2
Calor Específico
1 Btu/(lb m
. F) = 4187 J/(Kg. K)
1 J/(Kg. K) = 2.3886 10
Btu/(lbm. F)
Coeficiente de transferencia de calor ( h )
1 Btu/(h.ft
2
. F) = 5.678 W/(m
2
.C)
1 Btu/(h.ft
2
. F) = 0.000568 W/(cm
2
.C)
1 Btu/(h.ft
2
. F) = 4.88 Kcal/(h .m
2
.C)
1 Btu/(h.ft
2
. F) = 0.000394 HP/( ft
2
. F)
1 Kcal/(h .m
2
. C) = 0.2048 Btu/(h. ft
2
. F)
1 W/(m
2
. K) = 0.1761 Btu/(h. ft
2
. F)
Conductividad térmica ( k )
1 Btu/(h.ft.
F) = 1.731 W/(m.K)
1 Btu/(h.ft. F) = 0.4132 cal/s.m.C
1 Kcal/(h.m. C) = 1.163 W/(m.K)
1 W/(m.K) = 0.57782 Btu/(h.ft.F)
Densidad
1 lb m
/ ft
3
= 16.018 kg/m
3
1 lbm / in
3
= 27.680 g/cm
3
1 slug/ft
3
= 515.38 kg/m
3
1 kg/m
3
= 0.06243 lb m
/ft
3
Densidad de1 flujo de calor
1 Btu/(h.ft
2
) = 3.1525 W/m
2
1 kcal/(h.m
2
) = 1.163 W/m
2
1 W /m
2
= 0.3171 Btu/(h.ft
2
Difusividad (calor, masa, momento)
1 ft
2
/s = 0.0929 m
2
/s
1 ft
2
/h = 2.581 10
m
2
/s
1 m
2
/s = 10.7639 ft
2
/s
1 cm
2
/s = 3.8745 ft
2
/h
Energía
1 Btu = 1055.04 J
= 1055.04 W.s
= 1055.04 N.m
= 252 cal
= 777.97 ft.lbf
hp.h
1 cal = 4.1868 J
1 lb f
.ft =1.3558 J
1 hp.h = 2.685 10
6
J
1 J = 1 N.m = 1 W.s
1 J = 1 V.C = 10
7
erg
Btu
= 0.239 cal
7
erg
18
eV
Energía por unidad de masa
1 Btu/lb m
= 2326 J/kg
1 J/kg = 4.2995 10
Btu/lb m
Fuerza
1 lb f
= 4.4482 N
= 32.2 lbm.ft/s
2
= 32.2 poundal
= 0.4536 kg f
1 N = 1 kg.m/s
2
= 0.22481 lb f
5
dyn
= 1 kgf / 9.
Generación de calor por unidad de volumen
1 Btu/(h.ft
3
) = 10.343 W/m
3
1 Btu/(h.ft
3
) = 8.9 kcal/h.m
3
1 W/m
3
= 0.09665 Btu/(h.ft
3
Longitud
1 ft = 0.3048 m
= 12 in
= mi/
= km/
1 in = 0.0254 m
= 2.54 cm
1 m = 3.281 ft
= 39.97 in
= 100 cm
= 1000 mm
6
m
10
= km/
1 Å = 10
cm
1 Å = 10
m
1 m = 10
mm
1 m = 10
cm
1 m = 10
m
1 milla = 1609.34 m
1 milla = 5280 ft
1 año luz = 9.46 10
15
m
Masa
1 lbm = 0.4536 kg
= short ton/
= long ton/
= 16 oz (avoirdupois)
= slug/32.
= metric ton (t)/2204.
= 14.58 oz (troy)
1 oz = 28.35 g
1 slug = 14.594 kg
1 kg = 2.2046 lb m
1 kg = 1000 g
1 ton (metric) = 1000 kg
1 ton (metric) = 2205 lb
1 ton (short) = 2000 lb
1 ton (long) = 2240 lb
Potencia
1 cSt = 0.01 St
= 0.01 cm
2
/s
m
2
/s
= 1 cP/(g/cm
3
ft
2
/s
= 1 cP/(62.4 lbm/ft
3
Volumen
1 ft
3
= 0.02832 m
3
= 28.31 lt
= 7.48 U.S.gal
1 in
3
m
3
1 gal (U.S.liq.) = 0.003785 m
3
= 3.785 L
=231 in
3
1 m
3
= 35.29 ft
3
= 1000 lt
Multiplicador Prefijo Abreviación
12
tera T
9
giga G
6
mega M
3
kilo k
2
hecto h
1
deca da
deci d
centi c
mili m
micro
nano n
pico p
ato a
FORMULAS DE APLICACIÓN
= 4 ∗ 𝐀𝀀/P
