reheaters in A Sentence

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    Heating-pipelines, containers, coal-saving devices superheaters and Reheaters of high temperature and high press boiler(P>=9.8MPa, T>450oC).

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    For large boilers in power stations, superheaters and Reheaters account for a big proportion in the total heating surfaces, they are to be arranged in the areas where smoke is with higher temperature.

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    To reduce the flow resistance of steam in Reheaters and improve the thermal system efficiency, Reheaters usually apply small mass flow rate, but meanwhile it makes worse for cooling conditions of tube wall of Reheaters.

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    4

    Superheaters are the heating surfaces which heat the main steam from the surnatured temperature to the rated superheated temperature, and the Reheaters are the heating surfaces which heat the exaust from the steam turbine high pressure cylinder to a certain temperature.

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    5

    The inlet steam of Reheaters is the outlet steam of steam turbine high pressure cylinder, its pressure is about 20% of that of main steam, whose temperatre is slightly higher than surnatured temperature, and thus increases both steam and heat consumption.

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    6

    In modern boilers, the heat absorption consumption of the superheaters and Reheaters is over half of total heat absorption for the working fluid, thus the heating surfaces of superheaters and Reheaters account for a large proportion in total heating surfaces of boilers, and they must be placed in the areas where smoke temperature is higher, the working conditions are the worst among all the heating surfaces.

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