Here are some general formulas and conversion tables that are frequently used in the compression industry.
Energy
J=Nm=Ws |
kWh |
kcal |
Btu |
1 |
0.2778 10-6 |
0.239 10-3 |
0.948 10-3 |
3.6 10-6 |
1 |
860 |
3412 |
4186.8 |
1.163 10-3 |
1 |
3.9683 |
1055 |
0.293 10-3 |
0.252 |
1 |
Thermal Conductivity
W/m °C |
kcal/m h °C |
Btu/ft h °F |
1 |
0.86 |
0.5778 |
1.163 |
1 |
0.672 |
1.731 |
1.4882 |
1 |
Heat Transfer Coefficient
W/m °C |
kcal/m2h °C |
Btu/ft2h °F |
1 |
0.86 |
0.1761 |
1.163 |
1 |
0.205 |
5.678 |
4.882 |
1 |
Specific Heat
kJ/kg °C |
kcal/kg °C |
Btu/lb °F |
1 |
0.2388 |
0.2388 |
4.187 |
1 |
1 |
4.187 |
1 |
1 |
Enthalpy
kJ/kg |
kcal/kg |
Btu/lb |
1 |
0.2388 |
0.4299 |
4.187 |
1 |
1.8 |
2.326 |
0.55556 |
1 |
Density
kg/m3 |
g/cm3 |
lb/ft3 |
lb/gal |
1 |
10-3 |
62.428 10-3 |
8.345 10-3 |
10-3 |
1 |
62.428 |
8.345 |
16.018 |
16.018 10-3 |
1 |
0.13368 |
119.827 |
0.119827 |
7.48055 |
1 |
Flow Rate - Standard Volume
Nm3 /h |
Sm3 /h |
SCFM |
MMSCFD |
1 |
1.0571 |
0.6222 |
0.89596 10-3 |
0.946 |
1 |
0.5886 |
0.84755 10-3 |
1.6072 |
1.699 |
1 |
1.44 10-3 |
1116.1 |
1179.9 |
694.44 |
1 |
We have also provided a link to a freeware website that will calculate conversions automatically. The link to the 'Convert' is: www.joshmadison.com
This software is freeware, and Toromont Energy Systems does not accept any responsibility for information supplied from this link. If you need detailed information, please contact your Toromont Energy Systems representative, or email us at info@toromontsystems.com.