Both have applications in gas volume measurements.
Nm3 is "Normal cubic meter"
"Normal" is a set pressure and temperature which (just to make things difficult) differs between industries.
Sm3 is"Standard cubic meter", a volume unit of measurement defined as follows: "Cubic meter at a temperature of 15° Celsius and a pressure of 101.325 kPa (Kilopascal)".
So, to perform the conversion, you will have to take into account the industry definition of "Normal" and compute Sm3 using Dalton's gas laws.
One has "N" and the other had "S".
There is a standard formula to convert from MMBTu to SM3. Multiply the mmbtu number by 26.37 to get the SM3 number.
NM3 to MT
facil
The reference conditions for gas volume are 0oC and 101.325 kPa, corresponding with a molar (ideal) gas volume of 22.414m3 / (kg.mol). This is shown as m3 (normal) or abbreviated to (non-SI) "Nm3".A unit not frequently used are standard cubic metres "sm3"; Conditions at 0oC and 101.325 kPa.
It is not clear what sm3 stands for but, in all likelihood, there is no valid conversion because the dimensions of the units are different.
121000000 Nanometers.
You cannot because they are not comparable units.
178 nm3 = ? cm3178 nm3 = (178 cm3)-7= 178 x 10-21cm3= 1.78 x 10-19cm3
Nm3 is a common unit used in industry to refer to gas emissions or exchange. It stands for Normal cubic meter. "Normal" is always dependant on the individual circumstances of each gas, pressure, and use. To convert Nm3 to a cubic foot of gas (under standard conditions), multiply by 38.04. Therefore, 1,000 Nm3/day = 1 kNm3/day = 38,040 cf/day.
1 Nm3=36308.96 btu
I don't know what does Nm3/h mean? Please help me. Thanks a lot!