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Q. What is the basic working of Cooling Tower?
Cooling towers are generally located downwind from process units to adequately disperse vapors (from exchanger leaks) and minimize exposure to water mist (biological hazards such as legionella). Spacing and location should also consider corrosion, ice formation and visibility problems that may result from impingement of the cooling tower exhaust plume on adjacent high structures. The ground area around cooling towers should be suitable for water basins and in the case of natural draft design, substantial foundations are required. Forced draft coolers can be noisy so consideration should be given to positioning them away from populated areas.
Cooling towers require maintenance access to fans and access to the water basin for cleaning. Chemical dosing and algae control facilities are often required. Location of cooling tower should prevent entrainment of particles or vapours from adjacent vents or stacks. Cooling towers are considered an off-plot item and must be located in a safe area away from inflammable vapours. The cooling towers and associated pumping bays are usually located in rows with the water feed channels running either parallel to or at right angles to the row of coolers.
Write down the maintenance schedule for the following : (a) Spark plug replacement. (b) Engine oil change/ top up period. (c) Steering head bearing.
Q. External coatings on vessels? All pressure vessels that will be installed underground shall have an external coating applied according to the following procedure: • All e
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.
hardness of bore well water is less than sea water .justify
Calculation for Stress-strain carves: After reaching point D, if bar is strained further, a local reduction in cross section occurs in gauge length (that is, formati
Choose a wire rope for a vertical mine hoist to lift a load of 55 kN from a depth of 300 metres. A rope speed of 500 metres/min is to be attained in 10 seconds.
Product Definition Data Interface (PDDI) IGES provided a very practical first solution for CAD data exchange, complete with an exchange file format. It was remarkable in the sp
methods in surface development
solve the following differential equation: dy/dx-(1+1/x)y=y^2
Support reaction: Explain the support reaction? What are different types of support and their reactions? Sol.: When the numbers of forces are acting on a body, and the
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