How much steam does one boiler horsepower equal at 212F according to the NJ Mechanical Inspection Bureau?

One boiler horsepower is defined as the ability to produce steam at the rate of 34.5 pounds per hour at a temperature of 212°F. This standard is established by the NJ Mechanical Inspection Bureau and is widely accepted in the industry. The figure of 34.5 lbs steam per hour is derived from the basic understanding that one boiler horsepower is sufficient to evaporate this quantity of water into steam under specific conditions.

This standard is important in the calculations and operations of steam boilers and is used to ensure that steam-producing equipment is properly sized and operated. Understanding this figure is crucial for anyone working with steam systems, as it helps in assessing boiler efficiency and capacity.