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How to Estimate Gas Specific Gravity

In this post I want to share how to estimate gas specific gravity.

What is gas specific gravity?

Gas specific gravity refers to the ratio between the density of a gas and the density of air at standard conditions (1 atm pressure and 60°F). When assuming ideal gas law behaviour, it equals the molecular weight of the gas divided by that of air.

What is the importance of gas specific gravity data?

Gas specific gravity data is frequently utilized in chemical engineering design processes. For example, gas specific gravity data is used to:

  • Predict natural gas hydrate formation temperature
  • Design oil and gas equipment
  • Assess the expected behaviour of gas when a leak occurs in the pipeline.
  • Etc

How to Estimate Gas Specific Gravity?

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How to Estimate Wind Speed as Function of Height

In this post I want to share to you how to estimate wind speed as function of height. Wind velocity plays a significant role in influencing the dispersion of released fluids. Wind speed rises with altitude above the earth’s surface, so reference height should be specified. Typically, 10 m is used as the meteorological standard unless noted otherwise.

Wind speed is also a function of weather stability and on the terrain.

Weather stability relates to vertical temperature gradients and atmospheric turbulence. The Pasquill-Gifford (P-G) classes are commonly used, with class G excluded from dispersion modelling. Read More