出典:Wikipedia
出典:『Wikipedia』 (2010/08/26 14:28 UTC 版)
The Wobbe Index (WI) or Wobbe number is an indicator of the interchangeability of fuel gases such as natural gas, liquified petroleum gas (LPG), and town gas and is frequently defined in the specifications of gas supply and transport utilities. If VC is the higher heating value, or calorific value, and GS is the specific gravity, the Wobbe Index, IW, is defined as