What is the standard unit used to express energy content for natural gas?

What is the standard unit used to express energy content for natural gas?

• A. BTU per gallon
• B. BTU per therm
• C. BTU per kilowatt-hour
• D. BTU per square foot

Answer: (B)

The energy content of natural gas is typically expressed using a standard energy unit, called the therm. A therm equals 100,000 BTU, so describing energy content as BTU per therm ties the gas’s energy to a fixed, widely used energy amount. This makes billing and energy accounting straightforward, because you can relate the amount of gas used (in volume) to its true energy content without juggling many different volume-based or area-based units. The other options aren’t standard for expressing natural gas energy content: BTU per gallon is more for liquids, BTU per kilowatt-hour mixes energy forms and isn’t a typical way to denote gas energy content, and BTU per square foot relates energy to area rather than to energy itself.

The energy content of natural gas is typically expressed using a standard energy unit, called the therm. A therm equals 100,000 BTU, so describing energy content as BTU per therm ties the gas’s energy to a fixed, widely used energy amount. This makes billing and energy accounting straightforward, because you can relate the amount of gas used (in volume) to its true energy content without juggling many different volume-based or area-based units.

The other options aren’t standard for expressing natural gas energy content: BTU per gallon is more for liquids, BTU per kilowatt-hour mixes energy forms and isn’t a typical way to denote gas energy content, and BTU per square foot relates energy to area rather than to energy itself.