Answer / kangchuentat

UNIT OPERATION - ANSWER 9.3 : The slope is given by R / (R + 1) = (0.99 - 0.36) / 0.99 = 0.6363. Rearranging the equation gives R = 0.6363 / (1 - 0.6363) = 1.7495. Choose the point (0, 0.36) as reference, 0.36 = XD / (R + 1), XD = 0.36 (R + 1) = 0.36 (1.7495 + 1) = 0.9898. The answer is given by Kang Chuen Tat; PO Box 6263, Dandenong, Victoria VIC 3175, Australia; SMS +61405421706; chuentat@hotmail.com; http://kangchuentat.wordpress.com.

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

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What is the procedure to estimate the friction factor involved in heat exchanger tubes?

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Question 89 - A hemocytometer is a device that is used for counting cells. In an engineering experiment, 100 microlitres of cell suspension is diluted with 50 microlitres of Trypan blue dye. Only death cells appear blue in color when stained with the dye. There are 57 cells detected in a hemocytometer, where 5.3 % of them appear blue when the chamber of the meter is placed under a microscope. Each square of a chamber can contain 0.0001 mL of liquid. (a) Calculate the number of viable cells. (b) The cells ocupied 5 squares. Calculate the average number of viable cells / square. (c) Calculate the dilution factor of the cell suspension by using the formula : Dilution = final volume / initial volume. (d) Calculate the concentration of viable cells / mL by using the formula : Concentration = (Average number of viable cells / square) x dilution x (square / volume).

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Explain some good strategies for curing tube vibration in shell and tube exchangers?

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What are some good tank mixing rules of thumb?

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what is the difference between absorber and scrubbers

4 Answers   Parco,

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THERMODYNAMIC - EXAMPLE 10.1 : The water is superheated steam at 440 degree Celsius and 17.32 megapascals. Estimate the enthalpy of the steam above. From the steam table for water at 440 degree Celsius, enthalpy of steam, h at 18 megapascals is 3103.7 kilojoules per kilogram and at 16 megapascal is 3062.8 kilojoules per kilogram. Assume that h = mP + c where P is pressure; m and c are constants at fixed temperature with small differences in P.

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how did you spend today

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repected sir i have given gate exam today.......... if i ll get the better rank in that ....what is the next process .....shall i give another one test......or wat....i dint get properlly..... plz help me or mail me on Nish_gasti@yahoo.co.in

0 Answers   IOCL,

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What are advantages using hollow shaft impeller?

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EXAMPLE 34.14 : For a formula of y = [ 1 - 1 / (1 + r) ^ n ] / r, let y = present value, r = interest rate / year, n = number of years to future value of 1 : (a) Find a simple mathematical relationship of y as a function of r when n = 1 million years. (b) What is the present value of $10000, if the annual discount rate is 10 %, forever?

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