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Sweden

Gota Canal
Society: ASCEMain Category: CivilSub Category: Water TransportationEra: 1800-1829DateCreated: 1810 to 1832Götakanal
AleN
GothenburgState: Västra Götaland CountyCountry: SwedenWebsite: http://www.asce.org/Project/Gota-Canal/Creator: von Platen, Baltzer, Telford, Thomas

The Gota Canal is the biggest infrastructure project ever built in Sweden. The canal was dug by hand with shovels made of wood. It took over 22 years of 12-hour days - an estimated 12 million man-days of labor - to complete the project.  

YearAdded:
1998
Image Credit: Courtesy Flickr/Patrick Strandberg (CC BY-SA 2.0)Image Caption: Gota CanalEra_date_from: 1810 to 1832
Ljungstrom Air Preheater
Society: ASMEMain Category: MechanicalSub Category: Manufacturing, Mechanical Power Production - SteamEra: 1920-1929DateCreated: 1920Tekniska MuseetStockholmCountry: SwedenWebsite: http://www.asme.org/about-asme/history/landmarks/topics-m-z/manufacturing---2/-185-ljungstrom-air-preheater-%281920%29, https://www.asme.org/getmedia/c7cf3d83-508f-4946-b476-9399c390fc83/185-Ljungstrom-Air-Preheater.aspxCreator: Ljungstrom, Fredrik

The Ljungstrom air preheater is a regenerative heat exchanger, invented in the 1920s and soon used throughout the world. Dr. Fredrik Ljungstrom, then technical director at Aktiebolaget Ljunstrom Angturbin, invented it for preheating combustion air in boiler plants, but the use has expanded to include energy recovery in combination with the removal of oxides of sulfur and nitrogen.

YearAdded:
1995
Image Credit: Public DomainImage Caption: Ljungstrom Air PreheaterEra_date_from: 1920
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