Gas flow measurement units standard cubic meters, we often referred to as imitation units of mass, size of units as it may seem, in fact, for units of mass, it is the location of the use of pressure, temperature does not have any relationship, if gas is natural gas, a standard cubic meters And also the quality of the components of the natural gas, natural gas trade settlement in the use of energy measurement units more reasonable because of the same quality of natural gas, whose different components, its heat also different.

Example: a standard cubic metre of air = 1.2041 kg (standard for the state of 101.325 kPa, 20 C)

Flow 100 m 3 /h standards State =120.41 kg/h

The relative density of natural gas for natural gas d=0.6,

1 Standard cubic meters =1.2041 0.6=0.7225 kg

Flow 100 m 3 /h Standard state =72.25 kg/h

State standards in both domestic and international pressure are standard atmospheric pressure, 101.325 kPa, but on different temperature, I have had two kinds of standard temperature, 20 C, 0 C.

Natural gas use 20 C, with gas 0 C or 20 C, this is historical reasons. In the trade settlement in contract negotiations with the two sides can be any temperature, known as the temperature of the contract.

The international community adopted the 15.6 C (60 F) or 15 C (59 F).

Flowmeter traffic volume and labor conditions, subject to pressure, temperature conversion (with traffic calculus) arrived.

Its conversion formula

In the formula

q vn q v State standards for working conditions and the volume of traffic, m 3 /h

p n p State standards for working conditions and the absolute pressure, Pa

T n T Standards for state and the state of thermodynamic temperature, K

Z n Z Standards for state and the state gas compression factor.

Editor's note: Some comrades ask and gas flow measurement units: standard cubic metres of questions are invited Sun Huai-comrades answered. For the use of reference!