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EspañolTHERMIC SYPHONS
'Thermic Syphons' are elements in the firebox of some steam locomotive designs. They are utilised to enable the greater efficiency of a locomotive boiler by effectively pre-heating the water as it enters the firebox.
Located within a steam locomotive firebox, the thermic syphon is a funnel-shaped steel fabrication that connects the bottom of the throat sheet and the crown sheet of the firebox. Water flows upward through the syphon from the injectors, connecting the coolest and hottest parts of the locomotive boiler. Syphons help to improve water circulation in the boiler through ensuring more uniform temperatures inside the boiler. This in turn increases the fuel efficiency of a locomotive, and has been utilised on several designs of locomotive. In Britain, the principal advocate of this technology was Oliver Bulleid, with the concept used in his Merchant Navy, Leader Class, West Country and Battle of Britain Classes.
| Contents |
| Design principles |
| References |
Design principles
Located within a steam locomotive firebox, the thermic syphon is a funnel-shaped steel fabrication that connects the bottom of the throat sheet and the crown sheet of the firebox. Water flows upward through the syphon from the injectors, connecting the coolest and hottest parts of the locomotive boiler. Syphons help to improve water circulation in the boiler through ensuring more uniform temperatures inside the boiler. This in turn increases the fuel efficiency of a locomotive, and has been utilised on several designs of locomotive. In Britain, the principal advocate of this technology was Oliver Bulleid, with the concept used in his Merchant Navy, Leader Class, West Country and Battle of Britain Classes.
References
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