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How is oil pressurized in mechanical atomization of atomizing burner of oil burners?

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in Energy Engineering by (91.0k points)
How is oil pressurized in mechanical atomization of atomizing burner of oil burners?

(a) By positive displacement pumps

(b) By centrifugal pumps

(c) Helicon-axial pumps

(d) Electric submersible

The question was asked in exam.

My doubt is from Fuel Burning Equipments in chapter Steam Power Plant of Energy Engineering

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The correct answer is (a) By positive displacement pumps

For explanation I would say: In mechanical atomization of atomizing burner of oil burners, the oil is pressurized by using a positive displacement pump. It is used in high capacity steam generating furnaces. In order to improve efficiency and flow conditions the viscosity of the oil is reduced by heating it to about 120^oC.

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