Model of Oliver Evans Flue Steam Boiler
date: label: date made
content: 1804
label: date made
content: 1955
notes: label: Description
content: This is a model of an early (ca 1802) boiler designed with an internal flue. The concept for the flue boiler was originally devised by John Smeaton of England ca 1770. But it is Oliver Evans who is credited with the practical development of an internal flue boiler. In the “flue boiler” type design an outer cylinder contains the water and steam, and a smaller inner cylinder contains the heat source and conducts the hot gases to the chimney. Prior to this development boilers were normally spherical with heat being applied externally.
label: Description
content: Evans in the United States and Richard Trevithick in England were pioneers in developing high-pressure steam engines based on boilers of this type. They reached pressures of 120 pounds per square inch. However, high pressure steam was not widely adopted for many years, and flue boilers were initially developed with the goal of obtaining the largest heating surface possible without regard to increasing strength.
label: Description
content: The model was made by the Smithsonian in 1955.
place: label: place made
content: United States: Pennsylvania
topic: label: Subject
content: Steam Engines
label: Subject
content: Model
setName: label: See more items in
content: Work and Industry: Mechanical and Civil Engineering
label: See more items in
content: Engineering, Building, and Architecture
label: Exhibition
content: Power Machinery
label: Exhibition Location
content: National Museum of American History
publisher: label: Related Publication
content: Frank A. Taylor. Catalog of the Mechanical Collections of the Division of Engineering United States National Museum, Bulletin 173
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MC.314650
label: catalog number
content: 314650
label: accession number
content: 208322
objectType: label: Object Name
content: Boiler, Steam
label: Object Name
content: boiler, steam, model
physicalDescription: label: Measurements
content: overall: 7 in x 27 in x 6 in; 17.78 cm x 68.58 cm x 15.24 cm