What is maximum recommend pipe velocity for dry and wet gases?

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

0 Answers  

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Why does a fractionating column does not catch fire even though it operates at temperature greater than 400 degree C ?

5 Answers   ONGC,

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Is there a difference in mtd (mean temperature difference) between 'e' and 'j' (divided flow) type shell and tube heat exchangers?

0 Answers  

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from which book shud i will prepare for the hpcl and various company exma i m fresher and my basic is not strong could u suggest from where to start

7 Answers   IOCL,

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what is extractive distillaion

6 Answers   ONGC,

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why Torispherical heads are used in pressure vessels?

1 Answers   India Cements,

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What type of heat exchangers are most commonly used for a large-scale plant-cooling loop using seawater as the utility?

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What is quicklime and what are the uses?

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REACTION ENGINEERING - EXAMPLE 13.3 : The half-life for first order reaction could be described in the differential equation dC / dt = -kC where k is a constant, C is concentration and t is time. (a) Find the equation of C as a function of t. (b) Find the half life for such reaction or the time required to reduce 50 % of the initial concentration, where k = 0.139 per minute. (c) When the initial concentration Co is 16 mol / cubic metre, how long does the reaction required to achieve the final concentration of 1 mol / cubic metre?

1 Answers  

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how does the properties of an element changes by increasing protons and electrons?

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What is a good method of steam tracing large vessels?

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