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| UP Steam Turbines https://www.rypn.org/forums/viewtopic.php?f=1&t=4336 |
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| Author: | hankmorris [ Wed Nov 06, 2002 6:04 pm ] |
| Post subject: | UP Steam Turbines |
In December 1938, General Electric built a pair of 2,500 horsepower, high-pressure (1,500 psi boiler pressure) high-speed (125 mph on level track), oil-burning steam turbine locomotives for the Union Pacific. These machines were the only condensing steam locomotives built and operated in the U.S. In April 1939, the Union Pacific took delivery of the two General Electric-built locomotives. The wheel arrangement of these two locomotives was 2-C+C-2. This pair of locomotives were an attempt by General Electric to compete with General Motors’ (EMD’s) passenger diesels. The unsatisfactory locomotives were returned to General Electric in June 1939, following only two months of use. They saw extensive service on the Great Northern Railway during a motive power shortage in 1943. They were returned to General Electric and retired late 1943. The specifications of the UP turbines are: Steam conditions: 1500 lb per sq. in, @ 920º Boiler: Water-tube with forced circulation Fuel: Bunker C fuel oil Turbine: Two-stage cross-compound, 12,500 rpm Generators: Two DC 12-pole variable-voltage, 1200rpm Traction motors: Six, air-cooled. What I don't have, neither does George Drury's book is a class designation (if any), road numbers (not visible in any photo I've seen), or builder's s/n. hankmorris@earthlink.net |
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| Author: | Bob Yarger [ Wed Nov 06, 2002 11:02 pm ] |
| Post subject: | Re: UP Steam Turbines |
Not sure about class, but road numbers, according to the caption, were 1 and 2. A fellow who worked on the design of these at GE once addressed our NRHS chapter, and confirmed they were a failure and mechanical/electrical nightmare. Note that old V&T 18 is still around, but the turbines aren't. Reportedly, it was more reliable on the demonstration tour also. > In December 1938, General Electric built a > pair of 2,500 horsepower, high-pressure > (1,500 psi boiler pressure) high-speed (125 > mph on level track), oil-burning steam > turbine locomotives for the Union Pacific. > These machines were the only condensing > steam locomotives built and operated in the > U.S. > In April 1939, the Union Pacific took > delivery of the two General Electric-built > locomotives. The wheel arrangement of these > two locomotives was 2-C+C-2. > This pair of locomotives were an attempt by > General Electric to compete with General > Motors’ (EMD’s) passenger diesels. The > unsatisfactory locomotives were returned to > General Electric in June 1939, following > only two months of use. They saw extensive > service on the Great Northern Railway during > a motive power shortage in 1943. They were > returned to General Electric and retired > late 1943. > The specifications of the UP turbines are: > Steam conditions: 1500 lb per sq. in, @ 920º > Boiler: Water-tube with forced circulation > Fuel: Bunker C fuel oil > Turbine: Two-stage cross-compound, 12,500 > rpm > Generators: Two DC 12-pole variable-voltage, > 1200rpm > Traction motors: Six, air-cooled. > What I don't have, neither does George > Drury's book is a class designation (if > any), road numbers (not visible in any photo > I've seen), or builder's s/n. http://gowest.coalliance.org:8080/cgi-bin/cw_cgi?fullRecord+2419+594+16842+2+0 ryarger@rypn.org |
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| Author: | buddy bob [ Thu Nov 07, 2002 1:19 pm ] |
| Post subject: | Re: UP Steam Turbines |
> In December 1938, General Electric built a > pair of 2,500 horsepower, high-pressure > (1,500 psi boiler pressure) high-speed (125 > mph on level track), oil-burning steam > turbine locomotives for the Union Pacific. > These machines were the only condensing > steam locomotives built and operated in the > U.S. > In April 1939, the Union Pacific took > delivery of the two General Electric-built > locomotives. The wheel arrangement of these > two locomotives was 2-C+C-2. > This pair of locomotives were an attempt by > General Electric to compete with General > Motors’ (EMD’s) passenger diesels. The > unsatisfactory locomotives were returned to > General Electric in June 1939, following > only two months of use. They saw extensive > service on the Great Northern Railway during > a motive power shortage in 1943. They were > returned to General Electric and retired > late 1943. > The specifications of the UP turbines are: > Steam conditions: 1500 lb per sq. in, @ 920º > Boiler: Water-tube with forced circulation > Fuel: Bunker C fuel oil > Turbine: Two-stage cross-compound, 12,500 > rpm > Generators: Two DC 12-pole variable-voltage, > 1200rpm > Traction motors: Six, air-cooled. > What I don't have, neither does George > Drury's book is a class designation (if > any), road numbers (not visible in any photo > I've seen), or builder's s/n. dear hank i just don't have time to look at my libary now but i remember seeing a very detailed artical on them in railway age or railway mech. eng of 1939 0r 1940 it shows details of boiler and controls. bye for now bb staybolt2@netscape.net |
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