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Q.Explain working of Steam Drum?
Total solids concentration in the steam at steam manifold outlet shall not exceed 0.5 ppm during steady operation at MCR. Fabricator must indicate the maximum acceptable total dissolved solids concentration in the boiler water when operating normal drum water level.
The normal water operating level in the steam drum shall be not less than 25 mm (1") below the drum center line. In the drum, the surface area of the normal operating water level shall be sized based on 100% MCR, such that the maximum surface release rate shall not exceed 3,900 kg/m2h (800 lb/ft2h).
Water hold-up between fabricator's stated normal water level and top downcomer level shall be sufficient to enable operating at 100% MCR for at least five minutes in the event of loss of boiler feed water supply. This resident time design shall include ramping rate of 20% MCR per minute.
The water surge volume in the steam drum shall be adequate to accommodate the resultant swell from increase in load of 20% of MCR per minute without actuating the low water level cut-off.
when the governor is connected to a engine its sensitiveness formula change,why?
It should include 10 pages along with pictures and references.
Q. Explain the Cushion Materials which used in moulding sand? These materials when added to the moulding sand burn and from gases when the molten metal is poured into the mould
Q. General Design Requirements for Steam Generators? The Steam Generators shall be once-through type; with a parallel-pass arrangement, direct fired, and consist of a combustio
FLUX FEEDING & RECOVERY SYSTEM The flux is fed by gravity from the flux delivery hopper mounted on the welding head through a tube into the welding zone. Flux feeding is normally
Those that produce microbial cells e.g.Baker's yeast or mycoprotein. Those that produce microbial enzymes e.g. alpha amylase for starch processing, glucose isomerase for the pro
Features of the Schem: Features of the scheme are as follows : DIC is the primary registering centre. Registration is voluntary and not compulsory. Two types of
The National Aeronautics and Space Administration (NASA) studies the physiological effects of large accelerations on astronauts. Some of these studies use a machine known as a cent
CLASSIFIC A TIO N: 1. In accordance to number of strokes per cycle: (a) Two stroke (b) Four stroke. 2. In accordance to the fuel being used: (a)
Wire Feed System The submerged arc welding machine of the wire feed control may be of the following types: 1. Voltage sensitive system 2. Constant wire feed The voltage sensiti
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