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Tubular air preheater of a boiler is also called as _________

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Tubular air preheater of a boiler is also called as _________

(a) recuperative air preheater

(b) elliptical air preheater

(c) ovoid air preheater

(d) squarish air preheater

The question was asked in examination.

The query is from Boiler Mounting Accessories topic in division Steam Generators & Accessories of Energy Engineering

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Right option is (a) recuperative air preheater

Best explanation: Tubular air preheater is also called as recuperative air preheater. This type of air preheater is composed of steel tubes through which hot flue gases flow. Air is made to circulate over these steel tubes and thus gains heat.

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