Info

1435t 1700-f 13333 "C; j?79rq

Enthalpy atu/lb (IfJ/kgJ

1435t 1700-f 13333 "C; j?79rq

Enthalpy atu/lb (IfJ/kgJ

Fig. 7-5 Section View of Gas-Fired Industrial Boiler. Source: Babcock & Wilcox

Btu/h or kJ/h (HHV basis). Boiler capacity or output may be specified as heat (Btu or kJ per hour), as steam flow (lbm or kg of steam per hour) or as boiler horsepower (BHP). Boiler horsepower is defined differently from mechanical horsepower; the following relationships are commonly assumed (at 212°F or 100°C):

Fig. 7-6 Steam-Water Temperature Profile for Gas-Fired Industrial Boiler. Source: Babcock & Wilcox and for metals, primarily by electronic movement. The rate of heat transfer through materials, due to a temperature difference for one-dimensional conduction, is given by Fourier's law, and is expressed as:

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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