Which Fuel Has Higher Calorific Value: LPG or Petrol?

Compare the calorific values of LPG and petrol to determine which fuel releases more energy per kilogram for efficient fuel use.

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LPG (Liquefied Petroleum Gas) has a higher calorific value compared to petrol. LPG offers around 46 MJ/kg, while petrol stands at approximately 44 MJ/kg. This means LPG can release more energy than petrol when the same weight of each fuel is burnt, making LPG a more efficient fuel option in terms of energy output.

FAQs & Answers

  1. What is calorific value in fuels? Calorific value is the amount of energy released when a specific amount of fuel is completely burned, usually measured in megajoules per kilogram (MJ/kg).
  2. Why is LPG considered more efficient than petrol? LPG has a higher calorific value (about 46 MJ/kg) than petrol (approximately 44 MJ/kg), meaning it releases more energy per kilogram when burned, making it a more energy-efficient fuel.
  3. Can LPG replace petrol in vehicles? Yes, LPG can be used as a fuel in specially designed or converted vehicles due to its high energy content and cleaner combustion compared to petrol.

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