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Q. Explain about Ducts and Flues in steam generators?
All air ducts and gas flues connecting the forced draft fan, fan intake silencer, preheater, and transition piece at the generator outlet shall be supplied.
Ducting shall be of continuous seal welded construction to ensure air tightness, with gasketed / flanged connections for field assembly.
Ducting shall be adequately reinforced and stiffened.
Ducting design shall be based on maximum discharge fan pressure at minimum design temperature. Maximum velocity in intake duct shall be 60 ft/s (18.3 m/s). Maximum velocity in flue gas shall be 90 ft/s (27.5 m/s).
Ducting shall be sized to limit the dynamic head at the point of maximum velocity to no more than ten percent of the burner pressure drop at firing conditions.
Minimum thickness of air ducting shall be 3/16 in (5 mm) for air ducting and 1/4 in (6 mm) for flue gas ducting.
write short note on''coefficient of insensitiveness''of governors.
Discover the angle of twist - uniformly varying shaft: A uniformly varying shaft of length 2 m is subjected to a torque of 2 kN-m. The diameter at the ends shall be 60 mm and
Question 1: There are different devices which may be used to attract the attention of the customers and persuade them to purchase merchandise. a) Make a list of at least te
Q. Explain the protocol for stress testing? The protocol for stress testing should be structured to include the following: 1) Continuous ECG monitoring. 2) Hard copy ECG
Insulator : This is the top portion of spark plug made of high purity aluminum oxide having excellent characteristics such as good heat conductivity, mechanical strength.
SUBMERGED ARC WELDING The optimum performance of welded vessels and structures in service have led to the full exploitation of automatic welding processes. This arc welding is on
Find speed of dynamo shaft: Q: W ith the help of belt an engine running at 200rpm drives line shaft. The Diameter of the pulley on engine is 80cm and the diameter of the pul
Necessity of Lubrication To lubricate the various parts of engine. The supplementary function of lubrication is to cool and clean the engine parts. To prevent en
Evaluate the centroid of an area: Determine the centroid of an area shown in Figure (a). Solution This problem may be attempted in two ways as illustrated in Figu
Process units should have staggered access from at least two directions. The space between battery limits of adjoining units should be kept clear and open. Do not consider the clea
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