I have a question regarding the conversion between electrical and fuel energy consumption
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In the conversion of energy consumption in the petrochemical industry, one kilowatt-hour is typically equivalent to 0.3 kilograms of standard oil (meaning that 3.3 kilowatt-hours equal one kilogram of standard oil). In terms of energy unit conversions, 10,000 kcal (1 kilogram of standard oil) equals 11.63 KW·h. What factors contribute to such a large difference between these two conversion rates?
1 kilogram of standard oil = 11.63 KW·h, which refers to the energy generated by combustion; in practice, this energy cannot be utilized at 100%, as the air used for combustion also carries away some energy. In contrast, electrical energy can be almost entirely utilized during the heating process.
The combustion efficiency of oil must be much lower compared to electricity.
What everyone is saying is correct in terms of concept, but why is there such a big difference? Boiler + power generation efficiency is ultimately reduced to 30% only