By V. Ganapathy

Choked with over 225 boiler/HRSG operation and layout difficulties, this e-book covers steam turbines and similar structures utilized in strategy vegetation, refineries, chemical crops, electric utilities, and different commercial settings. Emphasizing the thermal engineering facets, the writer offers info at the layout and function of steam turbines and warmth restoration boilers. He is helping these fascinated with improvement comprehend which inquiries to ask while picking out a steam generator for his or her venture. The booklet comprises many straightforward to exploit calculations and successfully explains the speculation in the back of the layout and function of every kind of boilers, superheaters and economizers together with distinctiveness boilers.

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Extra resources for Industrial Boilers and Heat Recovery Steam Generators: Design, Applications, and Calculations (Mechanical Engineering (Marcell Dekker))

Sample text

The superheater is capable of running dry, that is, without steam. When only process steam is required, saturated steam from the evaporator is used. When additional process steam is required, the duct burner is fired. Hence the HRSG can operate in a variety of modes and at various points as shown in the figure by varying the amount of steam injected into the gas turbine and by varying the amount of fuel fired in the duct burner. Thus the plant can vary the ratio of power to process steam significantly according to the cost of fuel or electricity and thus optimize the overall efficiency.

Costs could be about $165=kW. Absorption systems are more complex than mechanical chillers. Off-peak thermal storage is another method of chilling inlet air. A portion of the plant’s electrical or thermal output is used to make ice or cool water during lean periods. During peak periods, the chilling system is turned off and the stored ice is used to chill the inlet air. The performance of HRSGs with varying ambient temperatures is discussed later. One can appreciate from the example why inlet air cooling is necessary, particularly in locations where ambient temperatures are very high.

Choose best options for enhancing combined cycle output. Power, September 1993. GE Report. Advanced Technology Combined Cycles. General Electric Corp, October 2000. Editor. Advanced gas turbines provide high efficiency and low emission. Power Engineering, March 1994. US Dept of Energy. Clean Coal Technology Report—Wabash River Coal Gasification Repowering Project, November 1996. V Ganapathy. Understand boiler performance characteristics. Hydrocarbon Processing, August 1994. V Ganapathy. Heat-recovery steam generators: understand the basics.

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