Fuels & Combustion on Power Plant related Questions and Answers

Question :   Fuel gases containing hydrocarbons are not preheated before burning, because 1. they crack, thereby choking and fouling heat transfer surface 2. it reduces calorific value tremendously 3. it reduces flame temperature tremendously 4. there are chances of explosion during preheating Answer :   1 - they crack, thereby choking and fouling heat transfer surface