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Q. Show Corrosion of BFW Pump?
BFW pumps are in high-pressure high-temperature service and may be subject to cavitation and erosion-corrosion. Also overheating of these pumps is always concerned which can be managed by proper operation and circulation of cooling media to the pump suction header.
Low-grade metallurgy shall not be selected for BFW pumps and upgrading to 12Cr is recommended to prevent excessive erosion problem.
Q. Steam Generator Master Pressure Control? The combined header pressure is controlled by a regular P.I.D. controller which ultimately trims the water flow to each boiler. A
Q. Basic requirements of a control scheme of steam generators? The basic requirements of a control scheme are: • Master steam pressure control by feedback to the water flow
Mas s Flow Rate (m ): In absence of any mass getting stored system we can write; Mass flow rate at inlet = Mass flow rate at outlet That is, m f1 = m f2 as m f = d
in the spiral or helical gears- have meshing gear different helix angle?
Can you explain the basic blocks of a generalized measurement system? Draw them and illustrate their functions.
Internal Parts of boiler: P r essu r e Gauge : For indicating steam pressure W ater Level Indicator : for indicating water level. Steam Stop Valve : Permits fl
tryton cycle
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Determine the centroid of the area: Determine the centroid of the area OBDC Solution The trapezium area is divided in two simple areas, (i) A 1 = Rectangle
What are the factors responsible for the development of newer tool materials. Explain several materials used for cutting tools. List four kinds of tool wear.
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