EKC 394 LAB TEST: Reverse Osmosis and Distillation Column Performance

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Questions and Answers

What is the principle of reverse osmosis?

The direction of solvent flow can be reversed by applying pressure greater than osmotic pressure

What is ultrafiltration most commonly used to remove from tertiary treated wastewater effluent?

Colloidal and dissolved solids

Which statement about the performance of a distillation column is NOT true?

Fouling would not affect the tray efficiency

What type of membrane is used in the filtration module?

Semi-permeable membrane Signup and view all the answers

When is the minimum number of theoretical plates required in a fractionating column?

Zero Signup and view all the answers

What should the relative volatility be to separate the components of a binary mixture?

Greater than unity Signup and view all the answers

When does an azeotrope occur?

VLE composition Signup and view all the answers

If a reflux in a distillation column is 100 mol/h and the overhead product rate is 50 mol/h, what is the reflux ratio?

150 Signup and view all the answers

In membrane separations, which of the following is true?

Membrane separation requires a driving force Signup and view all the answers

In distillation, what does the overhead product typically contain?

Any number of components Signup and view all the answers

What is the effect of increasing insulation thickness up to the critical radius of insulation?

Added insulation will decrease heat loss Signup and view all the answers

What is the effect of raising the column pressure in distillation?

Lower relative volatility Signup and view all the answers

What type of flow arrangement is represented in the given diagram?

Parallel flow Signup and view all the answers

What mainly depends upon heat transfer by radiation?

Radiation Signup and view all the answers

In parallel flow heat exchangers, what can be predicted about the exit temperatures of hot and cold fluids?

The exit temperature of hot fluid is always less than the exit temperature of the cold fluid Signup and view all the answers

Which of the following statements is true about physical absorption?

A reversible phenomenon Signup and view all the answers

Which of the following is/are example/s of an operation of heat exchanger?

Feed water which is hot is brought into contact with cold water and the mixture leaves at uniform temperature. Signup and view all the answers

What does physical absorption mainly depend on?

the concentration gradient between the gas phase and liquid phase Signup and view all the answers

What is the objective of the experiment described in the text?

To investigate the heat transfer and surface heat transfer coefficient in a single tube and cross-flow heat exchanger Signup and view all the answers

What is the purpose of plotting the graph of ln Nu against ln Re?

To visualize the relationship between Nusselt number and Reynolds number for the tube Signup and view all the answers

What does the Nusselt number represent in the context of heat transfer?

The convective heat transfer coefficient Signup and view all the answers

What do the values of Reynolds number and Nusselt number indicate in Table 2.1?

The fluid velocity and convective heat transfer coefficient for the tube Signup and view all the answers

What does 'ho' represent in Table 2.1?

Convective heat transfer coefficient Signup and view all the answers

What does the slope of the graph of ln Nu against ln Re indicate?

The dependence of Nusselt number on Reynolds number Signup and view all the answers

What is the equation for the linear trendline representing the data for Row 4 in Experiment 2?

y = 0.9856x - 4.1343 Signup and view all the answers

What are the values of C and n for Row 2 in Experiment 3?

C = 0.063979, n = 0.8451 Signup and view all the answers

What is the value of Nusselt Number (Nu) for Row 1 in Experiment 2 at Iris Opening 5?

144.503 Signup and view all the answers

What is the Reynolds Number (Re) for Row 4 in Experiment 2 at Iris Opening 6?

10157.65 Signup and view all the answers

What is the Heat Transfer Coefficient (hcorr) for Row 1 in Experiment 2 at Iris Opening 3?

275.113 W/m2.⁰C Signup and view all the answers

What is the equation for the linear trendline representing the data for Row 1 in Experiment 2?

y = 0.9123x - 3.5301 Signup and view all the answers

What is the Heat Transfer Coefficient (h) for Row 4 in Experiment 2 at Iris Opening 5?

306.293 W/m2.⁰C Signup and view all the answers

What is the value of Nusselt Number (Nu) for Row 2 in Experiment 3 at Iris Opening 4?

371.606 Signup and view all the answers

What is the Reynolds Number (Re) for Row $1$ in Experiment $3$ at Iris Opening $6$?

$10658$. $02$ Signup and view all the answers

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