What is defined as the evaporation of 34.5 pounds of water?

The term that corresponds to the evaporation of 34.5 pounds of water is known as boiler horsepower. Boiler horsepower is a unit of measurement used to quantify the output of a boiler in terms of the amount of water it can convert into steam or vapor. One boiler horsepower is defined as the ability of the boiler to evaporate 34.5 pounds of water per hour into steam at a specific temperature and pressure.

Understanding boiler horsepower is essential in the context of systems that utilize boilers for heating or power generation, as it helps industry professionals gauge the performance and capacity of a boiler system. It provides a standard measure to compare different boilers and assess their efficiency and suitability for various applications.