عنوان مقاله [English]
Land-based gas turbines are one of the most practical turbines that use natural gas as the main fuel. Since natural gas is produced with different compositions in the refinery process, it can lead to change widely the combustion characteristics. In order to avoid this undesirable variation on combustion characteristics, different methods are suggested. One of these methods is the injection of Hydrogen into the main fuel (i.e. Natural gas). Hydrogen fuel has some desirable properties such as low activation energy, high reaction rate and high burning velocity which makes hydrogen as a suitable additive for modification of combustion characteristics of hydrocarbon fuels. The main purpose of the present study is studying the effects of Hydrogen addition into the different compositions of natural gas to achieve better combustion characteristics. It is observed that the addition of Hydrogen in a specific volumetric percentage into main fuel causes to modify combustion properties, for instance increasing flammability limits.