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Cnvertion Factors

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Conversion Factors

Acceleration 1 m / s 2 = 4.2520 x 107ft/h 2


Area 1 m 2 = 10.764 ft 2
Density 1 k g / m 3 - 0.06243 l b m / f t 3
Energy 1J - 0.239 cal = 9.4787 x 10-4Btu
Force 1 N = 0.224811bf
Fouling factor I m 2. K / W = 5.6779 h . ft2 . o F / B t u
Heat capacity flow rate 1 k W / K = I kW/~
= 1895.6 B t u / h . ~
Heat flux l W / m 2 = 0.3171 B t u / h . ft 2
Heat generation rate l W / m 3 = 0.09665 B t u / h . ft3
Heat transfer coefficient l W / m 2. K = 0.17612 B t u / h 9ft2. oF
Heat transfer rate lW = 3.4123 B t u / h
Kinematic viscosity and t h e r m a l lm2/s = 3 . 8 7 5 • 104ft2/h
diffusivity
Latent h e a t and specific enthalpy i k J / k g = 0.42995 B t u / l b m
Length I m = 3.2808 ft
Mass l k g = 2.2046 lbm
M a s s flow rate I k g / s = 7936.6 l b m / h
M a s s flux I k g / s . m 2 = 737.35 l b m / h , ft 2
Power lkW = 3412 B t u / h
= 1.341 hp
P r e s s u r e (stress) 1 Pa (1 N / m 2) = 0.020886 lbf/ft 2
= 1.4504 • 10 -4 psi
= 4.015 • 10 -3 in. H 2 0
Pressure 1.01325 x 105 Pa = I atm
= 14.696 psi
= 760 torr
= 406.8 in. H 2 0
Specific h e a t 1 k J / k g . K = 0.2389 B t u / l b m . oF
Surface tension 1 N / m = 1000 d y n e / c m
= 0.068523 lbf/ft
Temperature K = ~ + 273.15
= (5/9) (~ + 459.67) = (5/9) (~
T e m p e r a t u r e difference 1 K = 1 ~ = 1.8 ~ = 1.8~
T h e r m a l conductivity 1 W / m . K = 0.57782 B t u / h . ft. ~
T h e r m a l resistance 1 K / W = 0.52750~ 9h / B t u
Viscosity 1 k g / m . s = 1000 cp = 2419 l b m / f t , h
Volume 1 m 3 = 35.314 ft 3 = 264.17 gal
Volumetric flow rate 1 m3/s = 2118.9~/min(cfin)
= 1.5850 • 104 g a l / m i n (gpm)

lbf: p o u n d f o r c e a n d l b m : p o u n d m a s s .

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