Question 110Steam Plants - 1st Asst/Chief

The correct answer is D) vertical U-type. The illustration SG-0007 shows a vertical U-type boiler superheater, which is the correct design described in the answer choices. A vertical U-type superheater has the steam flow directed upwards through the first leg, then downwards through the second leg, forming a U-shape. This configuration allows for efficient heat transfer from the hot combustion gases to the steam flowing through the superheater tubes. The other options are incorrect because they do not accurately describe the design shown in the illustration. Option A refers to an overdeck convection-type superheater, which has a different configuration. Options B and C describe other types of superheater designs that are not represented in the given illustration.