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Courtesy of Department of Mechanical Engineering, Stanford University

Table 6-7c Properties of Superheated Steam and Compressed Water (Temperature and Pressure), SI Units. Source: Babcock & Wilcox

A boiler is a water-filled pressure vessel that, with the addition of heat, produces hot water or steam. Commonly, the term boiler refers to a system that transfers water into the pressure vessel, provides a source of controlled heat, and transfers resulting steam to a piping system for delivery to points of use. Boiler is sometimes used interchangeably with steam generator, although the latter is usually reserved for large industrial-type boilers. The term boiler may also refer specifically to the section of a steam generator in which water is evaporated. Functionally speaking, a boiler is a type of heat exchanger, a device used to transfer heat from one fluid to another. Water heaters or hot water boilers are systems that provide a temperature rise without evaporation.

Renewable Energy 101

Renewable Energy 101

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable. The usage of renewable energy sources is very important when considering the sustainability of the existing energy usage of the world. While there is currently an abundance of non-renewable energy sources, such as nuclear fuels, these energy sources are depleting. In addition to being a non-renewable supply, the non-renewable energy sources release emissions into the air, which has an adverse effect on the environment.

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