Page 609 - Handbook of Electrical Engineering

602 HANDBOOK OF ELECTRICAL ENGINEERING

Convert to Multiply by

btu kW-h 0.00002931
btu/ft 3 kcal/m 3 8.899
btu/lb kcal/kg 0.5556
erg J 10 −7
ft-lbf J 1.35582
ft-pdl J 0.0421401
hp-h, HP-h MJ 2.68452
international-cal J 4.18680
kgf-m J 9.80665
kJ btu 0.9478
kJ kW-h 0.000278
kJ Btu 0.9478
kJ ft-lbf 737.6
kW-h MJ 3.6
litre-atmosphere J 101.328
therm btu 100000.0
therm MJ 105.506
thermo chemical-cal J 4.18400
◦
15 C-cal J 4.18550

I.4.10 Pressure

Convert to Multiply by

atm, atmosphere kN/m 2 101.325
atm, atmosphere Pa 101325.0
atm, atmosphere bar 1.01325
atm (international) lbf/in 2 14.6959
atm (international) lbf/ft 2 2116.22
atm (international) kgf/m 2 10332.27
◦
atm (international) in of water 60 F 407.17
◦
atm (international) in of mercury 32 F 29.921
◦
atm (international) mm of mercury 32 F 760.00
at (metric technical) kgf/cm 2 1.0
at (metric technical) bar 0.98066
at (metric technical) lbf/in 2 14.2233
bar lbf/in 2 14.5
bar ft of water 33.455
bar m of water 10.2
bar mm of mercury 750.1
bar in of mercury 29.53
b, bar N/m 2 100000.0
b, bar kPa 100.0
inches of water mb 2.49089