天然气作为优质、清洁的能源在国民经济建设和人民生活中起着举足轻重的作用,而作为能源的天然气,人们关注的是它的热值,即热能(发热量)。由于历史的原因,我国的天然气贸易计量目前仍采用体积计量方式,即以立方米为结算单位。众所周知,天然气是一种混合物气体,除烷烃以外,还含 Natural gas, as a good source of clean and clean energy, plays a decisive role in the construction of the national economy and people’s livelihood. Natural gas, as an energy source, focuses on its calorific value, ie, heat (calorific value). Due to historical reasons, the measurement of natural gas trade in our country is still based on volumetric measurement, that is, the cubic meter is used as the settlement unit. It is well-known that natural gas is a mixture of gases, in addition to alkanes