Importance

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Abstract

A superheater (e.g., a radiant superheater or a convention superheater) may include carbon nanotubes. A superheater may be arranged to, for example, hang at an upper portion of a furnace of a boiler. The superheater may be substantially planar and may include a first vertical pass, a first connection pass, a second vertical pass, a third vertical pass, a second connection pass, and a fourth vertical pass. Each vertical pass may include an upper end and a lower end. The vertical passes may be connected in series, so that steam to be superheated enters at the upper end of the first vertical pass and flows through the first vertical pass and from the lower end of the first vertical pass via the first connection pass to the lower end of the second vertical pass and through the second vertical pass and from the upper end of the second vertical pass to the upper end of the third vertical pass and through the third vertical pass and from the lower end of the third vertical pass via the second connection pass to the lower end of the fourth vertical pass and through the fourth vertical pass, to be discharged from the upper end of the fourth vertical pass. The first connection pass may be arranged below the second connection pass so as to shield the second connection pass from radiation from the lower portion of the furnace.

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First Claim