For steam trains, what kind of deaerator was used, if any?
Upvote:3
I'm not aware of any use of deaerators in the UK at all.
Some of the companies built water treatment plants, but these were intended to reduce the hardness of the water in order to reduce the amount of scale deposited in the boiler and pipework, and were generally not build until the 1930s - heavy buildup of scale in the injectors can reduce the amount of water getting into the boiler, and a heavy buildup on the firebox can act as an insulating layer, which is bad for the firebox itself. Locos were also subject to regualr boiler washouts, again to remove any loose scale etc.
There's more detail on the LMS* society website here
*London, Midland and Scottish Railway, one of the UK "big four" from 1923 to 1948
Upvote:5
Short googling did not yield any special hsitoric feedwater plants for steam trains. This document by Altair states:
As the years passed, more efficient feed water treatments developed, boiler metal surfaces were maintained free from scale, and the problem of oxygen corrosion became more pronounced. This corrosion along with a trend to higher boiler pressures and the resultant increase in the temperature of the boiler water, highlighted the need for more efficient deaeration equipment. Oxygen attack on boiler metal is accelerated with increased temperatures.
In the early 1920's the first open feed water heater was designed to specifically to remove dissolved gases. This initial design was a counter-flow tray deaerator with a re-boiler coil arranged in the storage section, and an internal vent condenser water box.
Sp it appears that the first dearator was built in the 1920s. So how was corrsion prevented before? Water, unless it's fresh rainwater, contains dissolved minerals - water hardness. When boiling, these precipitate and form a scale layer. While one does not want this scale layer - worse thermal conduction, eventually closes pipes etc, it is a somewhat effective corrosion protection. Altair hint at this when they mention that the first dearator was designed after feedwater treaatment became better.
However, this is not conclusive proof that there was no daeration pre-1900. This could be shown by a survey of train yards etc, if these had any deaeration equipment. Dearation equipment would be especially useful when the feedwater source is mostly soft surface water.
ETA: Commentors ask for a source for the claim that scale serves as a corrosion protection. German wikipedia on Kesselstein - Scale - has this to say:
In 19. and 20th century, boilers were mostly operated without water treatment. Scale had to removed mechanically by Kesselklopfer ("Boiler-bangers"), using pointed hammers. The specific heat load of boilers then was lower and the boilers had no critical areas in regard to scale, so this way of operation was possible. Modern boilers with effiencies would be damaged quickly by scale, so feed water treatment is mandated in industry codes.
More post
- 📝 What were the key factors to the fall of domestic socialism in the USA?
- 📝 Did the atomic bombing of Hiroshima and Nagasaki contribute to Japan's surrender?
- 📝 Could an enlisted soldier in German Imperial Army get rank above Gefreiter?
- 📝 Are a fief and a vassal state the same thing?
- 📝 How much firepower did the British navy represent in 1940?
- 📝 Correlation between Mesoamerican and South Asian calendar systems
- 📝 When did we discover air?
- 📝 Did the Gallic army besieged in Alesia conduct itself well when expecting relief?
- 📝 Were ancient Israel's neighbors henotheistic?
- 📝 Did the ancient Greeks ban the gastraphetes?
- 📝 Will someone help me understand the following quotation about Calvinism?
- 📝 Was early marriage of queens not considered pedophilia?
- 📝 Was Fascism tied to any Specific Ideology Before Nazism and Italy's Fascist Party?
- 📝 What's the origin of differentiating between civilians' and soldiers' "rights" in war?
- 📝 What was the name of the father of Mesha, king of Moab?
- 📝 Re: WWI, is the term "Allies" a retronym?
- 📝 When did the English and Americans realize that vegetables were healthy?
- 📝 Which event is this memorial referring to when it says WW1 ended in 1919?
- 📝 What was used for writing in 15th century Europe?
- 📝 Who originally said, "The most segregated hour . . ."
- 📝 How much more productive was Aegyptus in comparison to Africa Proconsularis in classical antiquity?
- 📝 What is my grandfather's shoulder patch?
- 📝 Mali - French colonial rule
- 📝 Why did 1906 Iranian constitutionalists use the Belgian constitution as inspiration?
- 📝 Were there nurses stationed at Bude, Cornwall, UK during WW2?
- 📝 What happened to Marcus Licinius Crassus' Gold?
- 📝 Roman era clothing (Egypt + Carthage)
- 📝 During WW2, what B-29 crew role did the abbreviation EMG mean?
- 📝 Are there historical texts in England querying where Roman structures came from?
- 📝 Soviets, their war equpment and performance in WWII
Source: stackoverflow.com
Search Posts
Related post
- 📝 For steam trains, what kind of deaerator was used, if any?
- 📝 What kind of ink was used by medieval scribes in Iceland, given that there were no plant galls for iron-gall ink?
- 📝 What kind of labor was used to build the Egyptian pyramids?
- 📝 What kind of wood was the standard decking for aircraft carriers in World War 2?
- 📝 What was the primary source Brugsch used to argue for Egyptian monotheism?
- 📝 What alloy was used in early steam turbines? (1900 - 1930)
- 📝 What did people used to exchange for goods during the 1920s German hyperinflation while the official currency was not trusted
- 📝 What kind of incense was used by the Sumerians?
- 📝 What was used for writing in 15th century Europe?
- 📝 What computer was used in 1958 for handwriting recognition by Dimond?
- 📝 Was murdering a slave illegal in American slavery, and if so, what punishments were given for it?
- 📝 During the breakup of the Soviet Union, on what basis was citizenship granted or withheld for each of the fifteen new republics?
- 📝 What was the reason for Soviet troops to withdraw from Yugoslavia in World War II?
- 📝 What was the plan for an abort of the Enola Gay's mission to drop the atomic bomb?
- 📝 What was the economic basis for West Berlin?
- 📝 Are there any documented examples of wooden ships which were in active service for 100 years or more? If not, what is the longest?
- 📝 What were sandbags used for in medieval duels?
- 📝 Was any stimulant used in wars before WW2 that gave a significant advantage to soldiers?
- 📝 Was there any practical use for German spiked helmets (Pickelhaube)?
- 📝 What was a plausible timetable for a train journey across Europe in 1870?
- 📝 What was the planned line of succession for the Nazi Party in the event that Hitler died?
- 📝 What was the 1970s name for skinny jeans?
- 📝 What was life like for an adult Victorian chimney sweep?
- 📝 Was there a pre-determined arrangement for the division of Germany in case it surrendered before any Soviet forces entered its territory?
- 📝 What was it like for a coastal village to experience a Viking raid in around the tenth century?
- 📝 What was used instead of toilet paper in the US and the UK prior to 1900?
- 📝 What was the original process for becoming a US citizen?
- 📝 What kind of evidence (if any) could be used to identify a large conquest in the time before writing?
- 📝 After the fall of the Roman Empire, where did their armor go? Was it used by any dark ages forces?
- 📝 What was the motivation for the Gregorian Calendar?
