Boilers are a form of shell and tube heat exchanger that use boiled water to create steam or high pressure hot water.
High pressure boilers have characteristics that make them the best choice for the creation of energy and power.
The variations between the different types of boilers are their geometric orientation, external or internal fire, pressure, water circulation, number of tubes, and the circulation of gases.
Boiler construction requires an understanding of the purpose of a boiler, which is to generate steam from water.
The oversight groups for boiler standards and regulations include OSHA, NFPA, and the American Society of Mechanical Engineers (ASME).