Explain why is a vacuum breaker used on shell and tube heat exchangers that are utilizing steam as the heating utility?

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What are the affinity laws associated with dynamics pumps?

1 Answers   HPCL,

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What are the types of load?

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is extractive distillationӞH

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What type of pump may be appropriate for a liquid near saturation, a low flow rate, and very limited npsha?

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Why LMTD is calculated in Heat -Exchanger problems..Why dont we take average temperature??

4 Answers   Aker Solutions,

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Explain why is post-weld heat treatment (stress relieving) sometimes necessary for welded vessels?

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hi im appering for the written test of vizag steel plant for MT-2009.plz send me the pattern of placement paper plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

1 Answers  

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What is some common piping materials used to transport slurries?

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what is the PH value for boiler water.

12 Answers  

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Explain the strategies acquired to cure tube vibration and exchangers in a shell?

0 Answers  

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Question 65 – A differential equation is given as y” + 5y’ + 6y = 0, y(0) = 2 and y’(0) = 3. By using Laplace transform, an engineer has correctly produced the equation L {y} = (2s + 13) / [(s + 2)(s + 3)] = A / (s + 2) + B (s + 3). (a) Find the values of A and B. (b) The inversed Laplace transform of 1 / (s + a) is given by exp (-at) where a is a constant. If the statement : L {y} = 9 L { exp (-2t) } - 7 L { exp (-3t) } is correct, find the equation of y as a function of t as a solution to the differential equation stated in the beginning of this question. When L {d} = 9 L {b} - 7 L {c}, then d = 9b - 7c with b, c and d are unknowns.

1 Answers  

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