What is the term for the amount of energy needed to produce 34.5 pounds of steam per hour at atmospheric pressure and 212 degrees Fahrenheit?

The term for the amount of energy needed to produce 34.5 pounds of steam per hour at atmospheric pressure and 212 degrees Fahrenheit is known as Boiler Horsepower. This specific measurement is a unit used to define the capacity of a boiler to produce steam. One Boiler Horsepower is equivalent to the energy required to produce 34.5 pounds of steam per hour at the specified conditions, which is a standard measure in steam engineering and boiler calculations.

Steam Power refers to the work produced by steam engines and is a broader concept that does not specifically pertain to the output of boilers. Heating Value relates to the amount of energy produced from the combustion of fuel and is not specifically about steam production. Thermal Efficiency is a measure of how effectively a system converts input energy (like fuel) into useful output, but it does not directly relate to the amount of steam produced. Thus, Boiler Horsepower is the most accurate term for the amount of energy needed in this context.