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A Rankine cycle with two steam turbines and a single open feedwater heater. A feedwater heater is a power plant component used to pre-heat water delivered to a steam generating boiler. [1] [2] [3] Preheating the feedwater reduces the irreversibilities involved in steam generation and therefore improves the thermodynamic efficiency of the system ...
As with the tenders, the earlier L-1s would later be fitted with feedwater heaters, with the majority sporting Elesco bundle-type and Coffin internal feedwater heaters, though a handful of examples on the subsidiary Peoria & Eastern (as well as one on the NYC proper) had open-cycle Worthington SA type units, [3] and one each were furnished with ...
Some of the locomotives had a cylindrical Elesco feedwater heater ahead of the smoke stack, while others had a Worthington unit with its rectangular box in the same location. Only one Yellowstone was retired before dieselization took place on the Missabe; No. 237 was sold for scrap after a wreck. The rest of the 2-8-8-4s were retired between ...
Boiler feedwater is the water which is supplied to a boiler. The feed water is put into the steam drum from a feed pump. In the steam drum the feed water is then turned into steam from the heat. After the steam is used, it is then dumped to the main condenser. From the condenser, it is then pumped to the deaerated feed tank.
Pre-heat the feedwater; Provide a storage/surge volume; Based on the relevant theoretical Rankine cycle diagram, there are four main processes, or stages: Stages 1→2: Water pressure is raised from low to high by one or more pumps. Stages 2→3: Water is heated to boiling in either a conventional boiler or a nuclear propulsion steam generator
British 9F 92024 with Crosti boiler, showing secondary smokebox door and side-mounted chimney Schematic diagram of a Franco–Crosti boiler with single feedwater heater. The Franco–Crosti boiler is a type of boiler used for steam locomotives.
Feedwater pumps range in size up to many kilowatts and the electric motor is usually separated from the pump body by some form of mechanical coupling. Large industrial condensate pumps may also serve as the feedwater pump. In either case, to force the water into the boiler, the pump must generate sufficient pressure to overcome the steam ...
The locomotives' marker lights, headlights, handrails, coupler lifting rods, cylinder head covers and back valve chambers were nickel-plated. Side rods were polished. The name of the train was painted in gold lettering on a blue nameboard that was mounted to the front of the locomotive smoke box just below the Elesco feedwater heater.