Tanker Familiarization Liquefied Natural Gas (LNG) Practice Exam

Which term is used to measure heat energy in English units?

Calorie BTU (British Thermal Unit) Watt Joule

Correct Answer:

BTU (British Thermal Unit)

Explanation:

In LNG practice, measuring heat energy in English units uses the British Thermal Unit. A BTU is the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. It’s the standard energy unit in the English engineering system for fuels and heating calculations, which is why it’s the appropriate choice here. Watt reflects power (rate of energy transfer), not total energy. Joule is an SI unit of energy, not an English unit. Calorie is also an energy unit but is mainly used in nutrition and some scientific contexts, not the typical English engineering standard for fuel energy content.

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