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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.
Explain about the footings how it is transmit loads. Footings are generally the lowermost supporting part of the structure known as sub-structure and are the last structural e
Logistics - Inbound and Outbound: Logistics plays a vital role in designing and shaping of SCM in a firm. Without an effective logistics system the effectiveness of the firms
Scope of WPS and PQR A Welding Procedure Specification (WPS) is written qualified welding procedure prepared to provide direction for making production welds to code requiremen
Editing Dimensions The dimension edit commands, DIMEDIT and DIMTEDIT are used basically to adjust the position of the text part of a dimension. This is usually only necessary,
If a Laboratory experiment, the following data were recorded with rope Break dynamometer : Diameter of fly-wheel = 1.2 m Diameter of the rope = 12.5 mm Speed = 200 r.p.m.
Determine the maximum bending stresses: A rectangular beam of breadth 100 mm & depth 200 mm is simply supported over a span of 4 m. The beam is loaded with a uniformly distrib
Explain Wilson HArtnell Governor
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Q. Explain working of Nozzles? Nozzles supporting agitators, pumps, or other mechanical equipment, shall be suitably reinforced to withstand the mechanical loadings, specified
how to draw circuits using cascade
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