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This steam evaporator aboard HMS Belfast distilled up to six tons of fresh water per hour for the boiler and for drinking. An evaporator, distiller or distilling apparatus is a piece of ship's equipment used to produce fresh drinking water from sea water by distillation. As fresh water is bulky, may spoil in storage, and is an essential supply ...
Boiler water treatment is a type of industrial water treatment focused on the removal or chemical modification of substances potentially damaging to the boiler. Varying types of treatment are used at different locations to avoid scale, corrosion, or foaming. [3] External treatment of raw water supplies intended for use within a boiler is ...
The treatment of boiler water can be put into two parts. These are internal treatment and external treatment. (Sendelbach, p. 131) [4] The internal treatment is for boiler feed water and external treatment is for make-up feed water and the condensate part of the system. Internal treatment protects against feed water hardness by preventing ...
Essentially, the distilled water produced for Egypt was made in a special apparatus with various forms of condenser employed. The principle for distillation is the same as the apparatus on steamships. On ships, steam is generated in one of the ships boilers then condensed, filtered and aerated in the apparatus.
The treated water falls into a storage tank below the deaerator. [20] [3] Oxygen scavenging chemicals are very often added to the deaerated boiler feedwater to remove any last traces of oxygen that were not removed by the deaerator. The type of chemical added depends on whether the location uses a volatile or non-volatile water treatment program.
It lasted from the end of the low-pressure haystack boilers in the mid-19th century through to the early 20th century and the advent of steam turbines with high-pressure water-tube boilers such as the Yarrow. Large or fast ships could require a great many boilers. The Titanic had 29 boilers: 24 double-ended and 5 smaller single-ended. The ...
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; Stages 3→4: Steam is expanded in the steam turbine to turn the ship's propeller and power the ship's turbine generators.
Yarrow boiler, with the flue and outer casing removed. Yarrow boilers are an important class of high-pressure water-tube boilers.They were developed by Yarrow & Co. (London), Shipbuilders and Engineers and were widely used on ships, particularly warships.
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