How much heat is produced from burning 2 gallons of No. 2 fuel oil?

When considering the combustion of No. 2 fuel oil, it’s important to understand the energy content of the oil itself. No. 2 fuel oil typically has a heat content of approximately 140,000 BTU per gallon.

To calculate the total heat produced from burning 2 gallons of No. 2 fuel oil, you multiply the heat content of one gallon by the number of gallons being burned:

140,000 BTU/gallon × 2 gallons = 280,000 BTU.

This calculation demonstrates that burning 2 gallons of No. 2 fuel oil generates 280,000 BTU of heat energy, which aligns with the correct choice. Understanding this relationship between the energy content of the fuel and the volume burned is essential for anyone working in HVAC or related fields, as it directly impacts heating efficiency and system design.