Question

What is BTU used to measure?

(a) Heat content

(b) Area

(c) Density

(d) Volume

I had been asked this question in final exam.

This intriguing question originated from Energy from Biomass topic in division Biomass Energy of Energy Engineering

Answer 1

Correct choice is (a) Heat content

To elaborate: The British thermal unit (Btu or BTU) is a traditional unit of heat; it is defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. Its counterpart in the metric system is the calorie, which is defined as the amount of heat required to raise the temperature of one gram of water by one degree Celsius.