What is pneumatic conveying?

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ENGINEERING ECONOMY - EXAMPLE 7.2 : In the purchase of a machine with a period n = 8.5 years, the minimum attractive rate of return, i = 12 %, the cost P = $55000, F = $4000 is the salvage, annual maintenance A = $3500. The return of the investment or equivalent uniform annual benefit is $15000. The equivalent uniform annual cost is P (A / P, i, n) + A - F (A / F, i, n). The investment is considered acceptable only when equivalent uniform annual benefit is greater than the equivalent uniform annual cost. From the compound interest table, (A / P, i = 12 %, n = 8 years) = 0.2013, (A / P, i = 12 %, n = 9 years) = 0.1877, (A / F, i = 12 %, n = 8 years) = 0.0813, (A / F, i = 12 %, n = 9 years) = 0.0677. Prove by calculations whether the investment above is acceptable.

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Name some common problems associated with dense phase pneumatic conveying?

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What is the meaning – strain? In a distillation column, if a metal block 10 cm on a side is deformed so that it becomes 9 cm long due to cooling effect, what is the strain involved in percentage?

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Explain the significance of the angle of repose holds in the chemical industry?

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Explain what are the assumptions made on conservation equation?

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testing formula for oxygen by ammonium chloride,ammonium hydroxide and copper

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In Pressure Sfety Valve(PSV) 2" by pass line why given for process units.

0 Answers   Essar,

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Explain how can one estimate how the friction factor changes in heat exchanger tubes with a change in temperature?

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What are the different characteristics that can affect the flow of bulk solids and how?

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What is a good method of analyzing powders for composition?

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types and working of compressor

1 Answers   IOCL,

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