economizers in A Sentence

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    Superhigh pressure boilers mostly use non-boiling type Economizers.

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    So usually superhigh pressure boilers use non-boiling type Economizers.

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    Boiler Economizers reuse exhausted flue gas to pre-heat the feedwater entering the boiler.

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    Thus, non-boiling type Economizers are the main type for superhigh pressure unit boilers.

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    If according to materials, Economizers can be divided into steel tube Economizers and iron Economizers.

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    If according to heating extension of the working fluid, Economizers can be divided into non-boiling and boiling types.

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    Non-boiling type Economizers are mostly made of cast iron, but they are also made of steel pipes, while boiling type Economizers can only be made of steel pipes.

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    8

    Cast iron Economizers are mostly used in boilers with a pressure of ≤2.5MPa. If the pressure exceeds 2.5 MPa, an economizer made of steel pipe should be used.

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    9

    Looking ahead, the new British research vessel RRS Sir Attenborough will have no less than five exhaust Economizers on board, together with a complete waste heat recovery system.

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    10

    Economizers must be sized for the volume of flue gas, its temperature, the maximum pressure drop allowed through the stack, what kind of fuel is used in the boiler, and how much energy needs to be recovered.

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    11

    At present, most large and medium volume boilers widely use steel tube made Economizers, because they have high strength and reliable working ability, and are able to withstand impacts, meanwhile they have good performance of heat transfer, small structure and low cost.

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    12

    Boiling Economizers: the outlet water temperature not only can reach the surnatured temperature, but also can make some water vapourized, the proportion is about 10-15% of total feed water, not more than 20% in case of much flow resistance caused to the working fluid.

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