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Coal-Fired

SS Badger Carferry
Society: ASMEMain Category: MechanicalSub Category: Water TransportationEra: 1950-1959DateCreated: 1952Lake MichiganLudingtonState: MIZip: 49431Country: USAWebsite: http://www.asme.org/about-asme/history/landmarks/topics-m-z/water-transportation/-191-ss-badger-carferry-%281952%29Creator: Christy Corporation, Skinner Engine Company

The two 3,500-hp steeple compound Unaflow steam engines powering the S.S. Badger represent one of the last types of reciprocating marine steam engines. Built by the Skinner Engine Company, most Unaflow engines are single expansion. These feature tandem high- and low-pressure cylinders separated by a common head. The Badger's four Foster-Wheeler Type D marine boilers, which supply 470-psig steam to the engines, are among the last coal-fired marine boilers built. 

YearAdded:
1996
Image Credit: Courtesy Flickr/ssbadger (CC BY 2.0)Image Caption: SS Badger CarferryEra_date_from: 1952
Gravimetric Coal Feeder
Society: ASMEMain Category: MechanicalSub Category: ManufacturingEra: 1950-1959DateCreated: 1957Stock Equipment PlantChagrin FallsState: OHCountry: USAWebsite: http://www.asme.org/about-asme/history/landmarks/topics-m-z/manufacturing---2/-184-gravimetric-coal-feeder-%281957%29Creator: Stock, Arthur, Hardgrove, Ralph

A variety of mechanical feeders, including drag-chain conveyors and rotary pocket feeders, historically have been used to volumetrically control the flow of fuel to coal pulverizers on power generators. Most power generation in the United States has relied on burning fossil fuels in steam boilers, with coal as the fuel of choice. By the 1920s, pulverized-firing (the burning in suspension of finely ground coal particles) evolved as means to more complete fuel combustion and higher system efficiencies and facilitated the use of larger boilers.

YearAdded:
1995
Image Caption: Drawing from patent documents for Gravimetric Coal Feeder.Era_date_from: 1957
Society: ASMEMain Category: Mechanical, ElectricSub Category: SteamEra: 1900-1909DateCreated: 19066605 13th Avenue SouthSeattleState: WAZip: 98108Country: USAWebsite: http://www.asme.org/about-asme/history/landmarks/topics-a-l/electric-power-production-steam/-45-georgetown-steam-plant-%281906%29-georgetown-powerCreator: Stone and Webster, Gilbreth, Frank
The Georgetown Steam Plant, a surprisingly complete and operable steam power plant after a career of nearly seventy-five years, was built in the early 1900s when Seattle's inexpensive hydroelectric power attracted manufacturers. Much of the power produced at this plant operated the streetcars.
YearAdded:
1980
Image Credit: Courtesy Flickr/wneuetc (CC BY-ND 2.0)Image Caption: Georgetown Steam PlantEra_date_from: 1906
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