What type of gas is primarily used in propane systems?

In propane systems, the gas that is primarily used is propane itself. Propane is a type of hydrocarbon that belongs to the alkane series and is derived from both natural gas processing and crude oil refining. It is commonly used for various applications, including heating, cooking, and powering certain types of engines.

Propane has specific properties that make it suitable for these applications, such as a high energy density and the ability to be easily stored and transported in liquid form. This versatility explains why it is the primary choice in systems designed to utilize propane as a fuel source.

Other gases mentioned, such as natural gas, butane, and isobutane, are different hydrocarbons with distinct properties and uses. While they might be used in some similar applications, they are not suitable replacements for propane in dedicated propane systems.