Answer / sagar mashru

Hot Fluid should be passed from tube side. Because, If hot
fluid is passed from shell side than there will be heat loss
and there will also be a question of safety because of hot
surface on outer side.

Answer / vikram

hot fluid should passed from tube side because it is easy to
clear the tube side or we can easily replaced the tube if
fouling kind of things happen which will reduce the rate of
heat transfer,while cold water should passed through shell side

Answer / kln

We have to consider the properties like corrosivity,
fouling factor etc.. while selecting the t/s or s/s fluids
in an exchanger. More fouling/corrosive material to be
selected on t/s as cleaning or replacement of tubes are
easy.

Answer / k manoj kumar

Thank you guys. I have seen your answers. I have a doubt about it. Oil is neither corrosive nor acidic. Then why can't we send it through shell side?

Answer / umar

when both the fluids have equal corrosiveness, the fluid of high pressure should pass the tube side. Because the tendency of tubes to collapse by external pressure is double to that of by internal pressure.

which type of packing gives large interfacial area stacked or random?

2 Answers   NPCIL,

A cantilever beam of length L = 3 m carries a uniformly distributed load (UDL) of W = 20 N / m throughout the length. Calculate the bending moment, BM of the beam near the fixed end. What is the shear force, SF at this point? Let SF = -WL, BM = -LWL/2.

1 Answers  

BIOCHEMICAL ENGINEERING INSTRUMENTATION - EXAMPLE 29.3 : In thin layer chromatography (TLC), let retention factor Rf = (distance traveled by solute) / (distance traveled by solvent). Silica gel is used as stationary phase which is more polar than the hexane solvent as mobile phase. If the Rf values of 3 solutes A, B and C are 1.5, 0.75 and 1 respectively, compare the polarities of A, B and C with reasons.

1 Answers  

Explain what types of valves are recommended for slurry services?

0 Answers  

ENGINEERING MECHANIC - EXAMPLE 15.3 : A biochemical trolley of mass 15 kg is towing a trailer of mass 5 kg along a straight horizontal pathway. The trailer and the trolley are connected by a light inextensible tow-bar. The engine of the trolley exerts a driving force of magnitude 100 N. The trailer and the trolley experience resistances of magnitude 10 N and 30 N respectively. (a) Form 2 equations with unknowns T and a, that represents the equilibrium for the 2 systems of the trolley and trailer. (b) Solve the simultaneous equations from the 2 equations that are obtained in part (a) of this question. T is the tension of the tow-bar and a is the acceleration.

1 Answers  

Question 90 - In the calculation of the growth of bacteria, absorbance, A in spectrophotometry is used. According to Beer-Lambert Law, A = e x l x c where A is the absorbance of the solution (no unit), l is the distance of light travels through the solution (in cm), e is the molar absorptivity or the molar extinction coefficient [ in L / (mol.cm) ]. For a particular solute and fixed path length : As / Ao = Cs / Co where Ao is the observed signal for a known concentration Co, and As is the observed signal for a sample concentration Cs. (a) For a cell concentration of 560 cells / mL, a spectrophotometre gives an absorbance reading of 1.0. A mixture of concentration 3600000 cells / mL can be diluted in several operations, with each operation having a dilution of 1:20. How many dilutions should be made so that the concentration of this mixture can be calculated within a range of A = 0.0 to 1.0. (b) In another experiment, a sample tube of 1 cm in width is used. Let A = 0.06 and e = 0.0012 ml / (cell.cm). Find the cell concentration of the sample.

1 Answers  

Explain what are some good uses of low-grade steam at 12 atm and 1920c?

0 Answers  

hai i A neelakanteswara rao ,selected for the interview on 15th july 2008. I completed my diploma in chemical engineering.let me know how to face the interview& the type of technical questions.

0 Answers   IOCL,

How much experience you are having in commercial software for protein design?

0 Answers   Aliens Group,

What are some common methods for helium leak testing a vacuum system?

0 Answers  

Hi, Please give me chemical engineering paper for IOCL exam for entire written exam, GD and personel interview model questions to my email id. (chemistnathan@rediffmail.com) Rgds, Ragu

0 Answers   HAL, IOCL,

distillation types (vacuum, azeotropic, steam, extractive)

1 Answers